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This page provides historical information of past additions to SINet.
See relevant Index for current documents available. 

SIN 458 Issue 2.0 - Openreach Backhaul Network Services (BNS), Service & Interface Description

SIN 458 has been amended to include the option for a second GbE card to be installed on an existing GbE spoke.

Published 17/09/08


SIN 468 Issue 1.1 - Openreach Street Access, Service & Interface Description

SIN 468 has been amended to provide clarification of the maximum power loads. Also one minor editorial.

Published 28/08/08


SIN 476 Issue 1.2 - BT Downstream 21CN Ethernet Services, Service Description

SIN 476 has been updated in order to include WES1000ER service, and to clarify the Auto-Negotiate setting. There have also been some minor editorial changes.

Published 18/7/08


SIN 481 Issue 1.1 - Openreach Bulk Transport Link (BTL), Service & Interface Description

SIN 481 has been amended in order to clarify that only one Bulk Transport Link can be fitted per cabinet.

Published 11/7/08


SIN 349 Issue 2.2 - BT Metallic Path Facility, Service Description

SIN 349 has been amended in order to update the list of references.

Published 4/7/08


SIN 349 Issue 2.1 - BT Metallic Path Facility, Service Description

SIN 349 has been amended in order to update the contact information and website link under "Further Information".

Published 27/6/08


SIN 485 Issue 1.0 - BT IPstream Connect Office, BT IPstream Connect Home, BT IPstream Connect Max & BT IPstream Connect Max Premium Products, Service Description and Interface Specification

IPStream Connect is the 20C end-user access product for IPStream. SIN 485 has been introduced to clarify the specifics for the individual products (previous reference was SIN 386).

SIN 486 Issue 1.0 - BT Wholesale - BT IPstream Connect Advanced Services - End User Speed Control and Downstream Quality of Service, Service Description

IPStream Connect is the 20C end-user access product for IPStream. SIN 486 has been introduced to clarify the specifics for the Advanced Services (previous reference was SIN 450).

SIN 487 Issue 1.0 - BT IPstream Connect Symmetric, Service Description and Interface Specification

IPStream Connect is the 20C end-user access product for IPStream. SIN 485 has been introduced to clarify the specifics for the individual products (previous reference was SIN 386).

SIN 482 Issue 1.2 - BT Broadband IP Products, Service Description

SIN 482 has been amended to incorporate references to the new IPStream Connect SINs. Also minor corrections have been made under Routing Protocols (Section 3.3.4) and Geographic-based delivery (Section 4.3).

Published 19/6/08


SIN 456 Issue 1.2 - BT IPstream SID for Accounting, Service & Interface Description

SIN 456 has been amended in order to clarify allowed uses of delimiters. Also minor editorial amendments have been made.

SIN 469 Issue 1.1 - BT IPstream SID for Authentication, Service & Interface Description

SIN 469 has been amended in order to clarify allowed uses of delimiters. Also a minor editorial amendment has been made.

Published 9/6/08


SIN 471 Issue 1.0 - BT Wholesale Broadband Managed Connect, Service Description

SIN 471 describes the Wholesale Broadband Managed Connect (WBMC) service, which provides connectivity between the Wholesale Broadband Connect product and the Communication Provider's network. This SIN directly replaces STIN 471 Issue 1.0, the content of which has been amended slightly in order to provide clarity.

Published 6/6/08


SIN 475 Issue 1.1 - Broadcast Access: 1.485GBit/s, Service and Interface Description

SIN 475 has been amended in order to clarify that 1.485Gbit/s service can support 270Mbit/s signals.

Published 5/6/08


SIN 222 Issue 2.6 - BT ISDN 30 (DASS), Service Description

SIN 222 has been updated in relation to the programme to increase transparency of capabilities on international 3.1kHz audio calls.

SIN 243 Issue 4.1 - BT ISDN Services, ISDN International Interworking, Technical Information For Suppliers

SIN 243 has been updated in relation to the programme to increase transparency of capabilities on international 3.1kHz audio calls.

SIN 261 Issue 5.4 - BT ISDN 2e and ISDN 30e Services using full ETSI Call Control, Service Description

SIN 261 has been updated in relation to the programme to increase transparency of capabilities on international 3.1kHz audio calls. There have also been some editorial amendments.

Published 4/6/08


SIN 171 Issue 9.1 - BT ISDN 2 (Using limited ETSI Call Control), Service Description and Withdrawal Notification

SIN 171 now contains an updated planned date of withdrawal and minor editorial amendments.

SIN 232 Issue 5.1 - BT ISDN 30 (I.421) Service, Service Description and Withdrawal Notification

SIN 232 has been updated in line with the planned date of withdrawal and the re-branding of Digital Select Services as Digital Calling Features.

SIN 329 Issue 9.8 - BT Broadband IP Products, Service Description

SIN 329 has been updated in order to provide clarity on the use of Virtual Domains.

Published 3/6/08


SIN 312, Issue 1.9 - BT ISDN Services, Overview

SIN 312 has been amended to include the latest planned withdrawal dates of certain ISDN services. Also "Select Services" have been renamed "Digital Calling Features" and the withdrawal of SIN 255 has been noted.

Published 2/6/08


SPIN 103 - Generic Ethernet Access (GEA) product: Launch Notification

SPIN 103 notifies Communications Providers that the Generic Ethernet Access (GEA) product will be launched on 30th June 2008. GEA will initially be available at Openreach’s Fibre to the Premises (FTTP) pilot site at Ebbsfleet, Kent where service activations are planned to start on 31st August 2008.

Published 30/5/08


STIN 476 Issue 1.1 - BT Downstream 21CN Ethernet Services, Service Description

SIN 476 has been updated to include the 10Mbit/s (WES10) and Local Access (WES LA) access options at launch.

Published 29/5/08


STIN 484 Issue 1.0 - BT Wholesale Broadband Connect - Converged, Service & Interface Description

STIN 484 describes Wholesale Broadband Connect - Converged (WBCC), which is an Integrated Broadband and Baseband Voice Access product incorporating a Voice Line Control (VLC) capability. BT intends to commence a WBCC technology trial in August 2008, ahead of a customer trial.

Published 21/5/08


SIN 258 Issue 1.3 - BT FacilityLine 1, Service Description

SIN 258 has been amended in order to update the references for further information.

SIN 265 Issue 2.4 - BT MediaNet 155 & BT MediaNet 34, Service Description

SIN 265 has been amended in order to update the references for further information.

SIN 266 Issue 1.3 - Analogue Presented Vision Circuits. PAL System I Video Standard

SIN 266 has been amended in order to update the references for further information.

SIN 320 Issue 1.3 - Serial Digital Video (SDV) and Associated AES/EBU Digital Audio Circuit, Service Description

SIN 320 has been amended in order to update the references for further information.

SIN 323 Issue 1.3 - Switched Serial Digital Video (SDV) and Associated AES/EBU Digital Audio Circuit, Service Description

SIN 323 has been amended in order to update the references for further information.

SIN 332 Issue 1.3 - BT Broadcast Services, Audio Broadcast Network, Service Description

SIN 332 has been amended in order to update the references for further information.

SIN 394 Issue 1.2 - BT BroadLook, Service Description

SIN 394 has been amended in order to update the references for further information.

SIN 407 Issue 1.3 - BT L-Band Relay, Service Description

SIN 407 has been amended in order to update the references for further information.

Published 9/5/08


SIN 412 Issue 3.4 - 622Mb Edgeless L2TP BT Central Product For BT IPstream, Interface Characteristics

SIN 412 has been expanded to illustrate the OSPF (Open Shortest Path First) solution where the Service Provider has a single router. Also editorial amendments have been made for clarification.

SIN 472 Issue 1.1 - BT Wholesale Broadband Connect (WBC) Products, Service Description

SIN 472 has been amended to add three Accounting Attributes (Table 17).

Published 8/5/08


SIN 482 Issue 1.1 - BT IPstream Connect Service Description

SIN 482 has been updated in order to amend and clarify the MSIL documentation references.

Published 2/5/08


SIN 329 Issue 9.7 - BT Broadband IP Products, Interface Specification

SIN 329 has been amended to remove references to IPstream S and IPstream 500, following the withdrawal of those products.

SIN 374 Issue 1.4 - L2TP Interface For BT IPStream

SIN 374 has been amended to remove references to IPstream S and IPstream 500, following the withdrawal of those products.

SIN 405 Issue 1.4 - BT IPstream Symmetric, Service Description and Interface Description

SIN 405 has been amended to remove references to IPstream S and IPstream 500, following the withdrawal of those products.

SIN 412 Issue 3.3 - 622Mb Edgeless L2TP BT Central Product For BT IPStream, Interface Characteristics

SIN 412 has been amended to remove references to IPstream S and IPstream 500, following the withdrawal of those products. Also text has been added to cover new NTE.

SIN 427 Issue 1.3 - BT Wholesale Application Driven QoS, Service & Interface Description

The scope of SIN 427 has been broadened in order to encompass BT Wholesale's Wholesale Broadband Connect (WBC) Assured Service.

SIN 483 Issue 1.0 - BT Wholesale Wholesale Broadband Connect Assured Service, Service Description

SIN 483 describes BT Wholesale's WBC Assured Service, which provides a prioritised flow of traffic in the downstream direction, ie towards the End User. This can be used to support applications such as video streaming. Assured rates for WBC have previously been included within SIN/STIN 472 and the associated trials.

Published 30/4/08


SIN 427 Issue 1.2 - BT Wholesale Application Driven QoS, Service & Interface Description

SIN 427 has been amended in order to clarify the syntax of requested session duration.

SIN 450 Issue 1.3 - BT Wholesale - BT IPstream Advanced Services - End User Speed Control and Downstream Quality of Service, Service Description

SIN 450 has been updated with uncapped profiles. Four End User Speed Control (EUSC) default policies have also been added.

SIN 480 Issue 1.0 - Openreach Ethernet Backhaul Direct (EBD), Service & Interface Description

SIN 480 describes Ethernet Backhaul Direct (EBD). This Openreach product offers permanently connected, point-to-point high speed data circuits that provide a secure and un-contended backhaul service for Communications Providers. Launch is planned for 22 May 2008.

SIN 481 Issue 1.0 - Openreach Bulk Transport Link (BTL), Service & Interface Description

SIN 481 describes the Bulk Transport Link (BTL) product. This is a high capacity, resilient solution for the delivery of multiple Openreach services from an Openreach Handover Point to a Communications Provider’s site not located in a BT Local Exchange. Launch is planned for 22 May 2008.

Published 22/4/08


SIN 290 Issue 2.3 BT MusicLine One - Service Description

SIN 290 has been amended in order to update the "Further Information" references.

Published 14/4/08


SIN 477 Issue 1.0 - FTTP Generic Ethernet Access Service & Interface Description

SIN 477 describes the Generic Ethernet Access (GEA) offered on Fibre to the Premises (FTTP) infrastructure where fibre is deployed in Openreach’s local access network. This will initially be available as a pilot at Ebbsfleet, Kent.

Published 8/4/08


SIN 472 Issue 1.0 - BT Wholesale Broadband Connect (WBC) Products, Service Description

SIN 472 provides service description information about WBC and its related components, End User Accesses (EUAs), Aggregation Points (APs) and Extensions Paths (EPs) for use by BT and WBC Customers.

.Published 2/4/08


SIN 478 Issue 1.1 - Openreach CCTV Access (uncompressed) Service & Interface Description

SIN 478 has been updated on the day of product launch in order to remove the references to a future product launch.

SIN 479 Issue 1.1 - Openreach CCTV Access (compressed) Service & Interface Description

SIN 479 has been updated on the day of product launch in order to remove the references to a future product launch.

Published 1/4/08


SIN 482 Issue 1.0 - BT IPstream Connect Service Description

SIN 482 describes the IPstream Connect product. This is a new interconnect option for Communications Providers and is planned for launch on 31 July 2008.

Published 12/3/08


STIN 477 Issue 1.0 - FTTP Generic Ethernet Access Service & Interface Description

STIN 477 introduces the Generic Ethernet Access (GEA) trial offered on Fibre to the Premises (FTTP) at Kesgrave, Suffolk and provides details relevant to CPs regarding connectivity and interfaces.

Published 10/3/08


SIN 431 Issue 1.6 - Openreach Wholesale Extension Services 10, Wholesale End to End Extension Services (WES/WEES 10) and Wholesale Extension Service Local Access 10
(WES-LA 10)

SIN 431 has been updated to amend the Service Description in accordance with updated AC power guidance

SIN 444 Issue 1.3 - Openreach Backhaul Extension Services 10 (BES 10) Service & Interface Description

SIN 444 has been updated to amend the Service Description in accordance with updated AC power guidance.

Published 4/3/08


SIN 478 Issue 1.0 - Openreach CCTV Access (uncompressed) Service & Interface Description

SIN 478 describes the Openreach CCTV Access uncompressed (analogue) service and provides technical information for terminal equipment manufacturers, suppliers and developers.

SIN 479 Issue 1.0 - Openreach CCTV Access (compressed) Service & Interface Description

SIN 479 describes the Openreach CCTV Access compressed (digital) service and provides technical information for terminal equipment manufacturers, suppliers and developers.

Published 3/3/08


STIN 472 Issue 1.4 - BT Wholesale Broadband Connect (WBC) Products Service Description

STIN 472 has been updated to add in references to FTTP trial.

Published 29/2/08


SIN 466 Issue 2.1 - Openreach Network Backhaul Services Service & Interface Description

SIN 466 has been updated to improve clarity on Link Loss Forwarding

Published 25/2/08


SIN 218 Issue 2.3 - BT MegaStream 34, Service Description

SIN 218 has been amended to indicate that Megastream 34 Aggregate services are no longer available for new supply.

SIN 398 Issue 1.1 - Microconnect Distributed Antennas, Service & Interface Description

SIN 398 has been amended to indicate that the service is no longer available for new supply.

Published 22/2/08


SIN 346 Issue 2.7 - BT ADSL Interface Description

Issue 2.7 of SIN 346 has been updated from the previous issue in order to remove explicit support for ADSL2.

Published 13/2/08


SPIN 102 - Wholesale Line Rental (WLR2) release 15 maintenance release 6 scheduled for 14th January 2008

SPIN 102 is applicable to all Wholesale Line Rental (WLR2) Communications Providers. In order to function with future releases of the WLR3 EMP software on the Equivalence Management Platform, the Service Provider Gateway will be enhanced through maintenance releases without being taken out of service. Openreach Customer Briefing WLR125/07 gave 28 days notice of this change.

Published 14/1/08


SIN 427 Issue 1.1 - BT Wholesale Application Driven QoS, Service & Interface Description

SIN 427 Issue 1.1 has been amended in order to provide clarification in various areas, following customer feedback on Issue 1.0.

SIN 338 Issue 1.6 - BT LAN EXTENSION SERVICE 1000, Service Description

SIN 338 Issue 1.6 has been amended in order to note that the product has been withdrawn from new sale.

SIN 429 Issue 1.2 - BT LAN Extension Service 10000, Service Description

SIN 429 Issue 1.2 has been amended in order to note that the product has been withdrawn from new sale.

Published 31/12/07


STIN 472 Issue 1.2 - BT Wholesale Broadband Connect (WBC) Products, Service Description

Issue 1.2 of STIN472 has been amended from the previous issue in order to improve clarity, eg removal of duplicated information.

STIN 441 Issue 2.0 - BT IPstream Home Max & BT IPstream Office Max , Service Description And Interface Specificatione Description

STIN 441 has been withdrawn due to the completion of the trial. The full service is covered by SIN386.

STIN 442 Issue 2.0 - BT Datastream Office Max & BT Datastream Home Max, Service Description And Interface Specification

STIN 442 has been withdrawn due to the completion of the trial. The full service is covered by SIN347.

Published 14/12/07


SIN 473 Issue 1.0 - Broadcast Access: 140MBit/s, Service and Interface Description

SIN 473 provides technical information on a new access service, which primarily allows the transportation of 140MBit/s Broadcast video circuits over fibre infrastructure, utilising new network terminating equipment (NTE).

SIN 474 Issue 1.0 - Broadcast Access: 270MBit/s, Service and Interface Description

SIN 474 provides technical information on a new access service, which primarily allows the transportation of 270MBit/s Broadcast video circuits over fibre infrastructure, utilising new network terminating equipment (NTE).

SIN 475 Issue 1.0 - Broadcast Access: 1.485GBit/s, Service and Interface Description

SIN 475 provides technical information on a new access service, which primarily allows the transportation of 1.485GBit/s Broadcast video circuits over fibre infrastructure, utilising new network terminating equipment (NTE).

SIN 476 Issue 1.0 - BT Downstream 21CN Ethernet Services, Service Description

SIN 476 provides technical information on the BT Downstream 21CN Ethernet Services, which offer access options at different rates.

Published 30/11/07


SIN 456 Issue 1.1 - BT IPstream SID for Accounting, Service and Interface Description

SIN 456 has been updated with references to the new SIN 469 “BT IPstream SID for Authentication” and related editorial changes.

SIN 469 Issue 1.0 - BT IPstream SID for Authentication, Service & Interface Description

SIN 469 provides technical information on the ‘SID (Service Identifier) for Authentication’ enhancement to BT IPstream. The enhancement allows verification that an end user access request has originated from the same connection that was configured during service provision. This follows the trial service, previously described in STIN 469.

Published 23/11/07


STIN 472 Issue 1.1 - BT Wholesale Broadband Connect (WBC) Products, Service Description

Issue 1.1 of STIN 472 is a redrafted version to cover the ST3 service trial.

Published 16/11/07


STIN 470 Issue 1.0 - External NTE for the PSTN Single Analogue Line Interface, Service & Interface Description

STIN 470 provides technical information on the trial of External Network Terminating Equipment for the PSTN Single Analogue Line Interface as a standard engineering practice for new residential premises under certain circumstances.

Published 13/11/07


SIN 431 Issue 1.5 - Openreach Wholesale Extension Services 10, Wholesale End to End Extension Services (WES/WEES 10), and Wholesale Extension Service Local Access 10 (WES-LA 10), Service & Interface Description

SIN 431 has been amended in accordance with updated DC power guidance.

SIN 433 Issue 1.5 - Openreach Wholesale Extension Service 100 (WES 100), Wholesale End to End Extension Services 100 (WEES100), and Wholesale Extension Service Local Access 100 (WES-LA 100),Service & Interface Description

SIN 433 has been amended in accordance with updated DC power guidance.

SIN 434 Issue 1.4 - Openreach Wholesale Extension Service 155 (WES 155) and Wholesale End to End Extension Services 155 (WEES155), Service & Interface Description

SIN 434 has been amended in accordance with updated DC power guidance.

SIN 435 Issue 1.4 - Openreach Wholesale Extension Service 622 (WES622) and Wholesale End to End Extension Service 622 (WEES622), Service & Interface Description

SIN 435 has been amended in accordance with updated DC power guidance.

SIN 436 Issue 1.5 - Openreach Wholesale Extension Service 1000 LAN & 1000ER (WES 1000 LAN, WES1000ER), Wholesale End to End Extension Service 1000 &1000ER (WEES1000 LAN, WEES 1000ER), and Wholesale Extension Service Local Access 1000 LAN (WES-LA 1000 LAN), Service & Interface Description

SIN 436 has been amended in accordance with updated DC power guidance.

SIN 437 Issue 1.4 - Openreach Wholesale Extension Service 1000 SAN (WES1000 SAN), Wholesale End to End Extension Service 1000 SAN (WEES1000 SAN) and Wholesale Extension Local Access Services 1000 SAN (WES-LA 1000 SAN), Service & Interface Description

SIN 437 has been amended in accordance with updated DC power guidance.

SIN 444 Issue 1.2 - Openreach Backhaul Extension Services 10, (BES 10), Service & Interface Description

SIN 444 has been amended in accordance with updated DC power guidance.

SIN 445 Issue 1.2 - Openreach Backhaul Extension Services 100 (BES 100), Service & Interface Description

SIN 445 has been amended in accordance with updated DC power guidance.

SIN 446 Issue 1.2 - Openreach Backhaul Extension Services 155 (BES 155), Service & Interface Description

SIN 446 has been amended in accordance with updated DC power guidance.

SIN 447 Issue 1.2 - Openreach Backhaul Extension Services 622 (BES 622), Service & Interface Description

SIN 447 has been amended in accordance with updated DC power guidance.

SIN 448 Issue 1.2 - Openreach Backhaul Extension Services 1000 /1000ER (BES 1000/1000ER), Service & Interface Description

SIN 448 has been amended in accordance with updated DC power guidance.

SIN 459 Issue 1.2 - Openreach Wholesale Extension Services 2500 (WES 2500) and Wholesale End to End Extension Services 2500 (WEES 2500), Service Description

SIN 459 has been amended in accordance with updated DC power guidance.

SIN 460 Issue 1.2 - Openreach Wholesale Extension Services 10000 (WES 10000) and Wholesale End to End Extension Services (WEES 10000) Service Description

SIN 460 has been amended in accordance with updated DC power guidance.

SIN 462 Issue 1.1 - Openreach Backhaul Extension Services 2500 (BES 2500), Service Description

SIN 462 has been amended in accordance with updated DC power guidance.

SIN 463 Issue 1.1 - Openreach Backhaul Extension Services 10000 (BES 10000), Service Description

SIN 463 has been amended in accordance with updated DC power guidance.

SIN 465 Issue 1.3 - Openreach WES Aggregation Service, Service & Interface Description

SIN 465 has been amended in accordance with updated DC power guidance.

Published 31/10/07


STIN 471 Issue 1.0 - Wholesale Broadband Managed Connect, Service Description

STIN 471 describes the Wholesale Broadband Managed Connect service that is planned for Alpha trial inJanuary 2008. The service provides connectivity between the Wholesale Broadband Connect product and the Communication Provider's network.

Published 19/10/07


SIN 468 Issue 1.0 - Openreach Street Access, Service & Interface Description

SIN 468 describes the Openreach Street Access service that it is planned to launch on 1October 2007. The service provides permanent, high speed, point-to-point data circuits linking remote street furniture locations with Communications Provider’s network equipment accommodated at BT local serving exchanges.

Published 30/08/07


SIN 133 Issue 4.1 - The BT Cardway Service, Service Description

SIN 133 has been updated to replace the contact point for Service Availability and Tariffs.

Published 29/08/07


STIN 469 Issue 1.0 - BT IPstream SID for Authentication, Service & Interface Description

STIN 469 has been published for the continuing trial of BT IPstream SID for Authentication. This trial was previously included with the BT IPstream SID for Accounting trial service in STIN 456. STIN 456 has now been replaced by SIN 456 for the launch of the BT IPstream SID for Accounting service.

SIN 456 Issue 1.0 - BT IPstream SID for Accounting, Service & Interface Description

Following a trial of BT IPstream SID for Accounting, STIN 456 has been updated to SIN 456 for the launch of this service.

Published 24/08/07


SPIN 101 - Wholesale Line Rental (WLR2) release 15 maintenance release 5 scheduled for 20th September 2007

This Service Provider Industry Notification is applicable to all Wholesale Line Rental (WLR2) Communications Providers and relates to changes in Wholesale Line Rental that will be visible on the Service Provider Gateway after 20th September 2007.

Published 16/08/07


SIN 222 Issue 2.5 - BT ISDN 30 (DASS), Service Description

SIN 222 has been updated to add Presentation Number to the service facilities described in Annex 1. Presentation Number had previously been omitted in error.

SIN 312 Issue 1.8 - BT ISDN Services, Overview

The withdrawal date for Highway, mentioned in clause 3 of this SIN, has been updated to align with the withdrawal notification for the service published in SIN 275.

Published 27/07/07


SIN 408 Issue 2.2 - BT Openzone, Service Description

Some limitations in the Service Availability clause have been deleted in SIN 408 to take account of the increasing coverage of BT Openzone.

Published 18/07/07


SIN 331 Issue 2.1 - BT 50 Baud Telex Service, Interface Description & Withdrawal Notification

An erroneous withdrawal date in clause 2 has been corrected to align with the March 2008 withdrawal date notified in clause 1.

Published 06/07/07


SIN 56 Issue 2.0 - Message Switching Computers connected to SPC Telex Exchanges, Interface Description & Withdrawal Notification

SIN 56 now contains notification that the BT telex service is no longer available for new supply and that BT plans to withdraw it from operational service in March 2008.

SIN 94 Issue 2.0 - Telex Fallback and Monitor Units, Interface Description & Withdrawal Notification

SIN 94 now contains notification that the BT telex service is no longer available for new supply and that BT plans to withdraw it from operational service in March 2008.

SIN 259 Issue 2.0 - SecureStream 300, Service Description & Withdrawal Notification

SIN 259 now contains notification that the BT SecureStream 300 service is no longer available for new supply and that BT plans to withdraw it from operational service in March 2008.

SIN 271 Issue 2.0 - MultiTelex X.25 Line Delivery, Interface Description and Withdrawal Notification

SIN 271 now contains notification that the BT MultiTelex service is no longer available for new supply and that BT plans to withdraw it from operational service in March 2008.

SIN 331 Issue 2.0 - BT 50 Baud Telex Service, Interface Description & Withdrawal Notification

SIN 331 now contains notification that the BT telex service is no longer available for new supply and that BT plans to withdraw it from operational service in March 2008.

Published 04/07/07


SIN 458 Issue 1.3 - Openreach Backhaul Network Services (BNS ), Service & Interface Description

SIN 458 has been amended by this issue to show that from 19 September it is planned to increase the maximum radial distance between sites to 35km.

Published 27/06/07


SPIN 100 WLR EMP RELEASE 500/510

SIN 275 Issue 6.1 BT Highway - BT’s Lowband Digital Access Service, Service Description & Withdrawal Notification

Issue 6.1 of SIN 275 has amended dates for the withdrawal of Business Highway and its Wholesale Line Rental equivalent, Digital Business.

Published 26/06/07


SIN 450 Issue 1.2 BT Wholesale - BT IPstream Advanced Services - End User Speed Control and Downstream Quality of Service, Service Description

This issue of SIN 450 advises that BT Wholesale plans to increase the maximum duration of Assured Rate sessions to 24 hours from 29 June 2007

Published 30/05/07


SIN 278 Issue 1.5 Enhanced Information Service for Emergency Calls. Service Description
The contact details for further information on the Enhanced Information Service for Emergency Calls has been updated in Clause 3 of SIN 278.

Published 10/05/07


SIN 450 Issue 1.1 - BT Wholesale - BT IPstream Advanced Services - End User Speed Control and Downstream Quality of Service, Service Description
SIN 450 has been updated to notify BT Wholesale's intention to change BT IPstream Advanced Services from 1 July 2007. These changes are to the set of Broadband Remote Access Server profiles configured within the network and to remove the capping service logic to allow higher best efforts bandwidths to be in use whilst a Quality of Service session is active.

Published 02/05/07


SIN 347 Issue 3.4 - BT Datastream Service, Service Description and Interface Specification
In this issue of SIN 347 the table of Datastream Office Virtual Path Options now shows Bandwidth in Mbit/s in addition to kbps, and the rates above 12Mbit/s have been amended to show the correct kbps. The reference for further information on ISDN and Datastream compatibility has been updated.

Published 22/03/07


SIN 459 Issue 1.1 - Openreach Wholesale Extension Services 2500 (WES 2500) and Wholesale End To End Extension Services 2500 (WEES 2500), Service Description
The contact details to obtain further information for the service has been updated.

SIN 437 Issue 1.3 - Openreach Wholesale Extension Service 1000 SAN (WES1000 SAN), Wholesale End To End Extension Service 1000 SAN (WEES1000 SAN) and Wholesale Extension Local Access Services 1000 SAN (WES-LA 1000 SAN), Service & Interface Description
The contact details to obtain further information for the service has been updated.

Published 08/03/07


SIN 465 Issue 1.2 - Openreach WES Aggregation Service, Service & Interface Description
The contact details to obtain further information for the service has been updated.

SIN 460 Issue 1.1 - Openreach Wholesale Extension Services 10000 (WES 10000) and Wholesale End To End Extension Services (WEES 10000), Service Description
The contact details to obtain further information for the service has been updated.

SIN 436 Issue 1.4 - Openreach Wholesale Extension Service 1000 LAN & 1000ER (WES 1000 LAN, WES1000ER), Wholesale End To End Extension Service 1000 &1000ER (WEES1000 LAN, WEES 1000ER) and Wholesale Extension Service Local Access 1000 LAN (WES-LA 1000 LAN), Service & Interface Description
The contact details to obtain further information for the service has been updated.

SIN 435 Issue 1.3 - Openreach Wholesale Extension Service 622 (WES622) and Wholesale End To End Extension Service 622 (WEES622), Service & Interface Description
The contact details to obtain further information for the service has been updated.

SIN 434 Issue 1.3 - Openreach Wholesale Extension Service 155 (WES 155) and Wholesale End To End Extension Services 155 (WEES155), Service & Interface Description
The contact details to obtain further information for the service has been updated.

SIN 433 Issue 1.4 - Openreach Wholesale Extension Service 100 (WES 100), Wholesale End To End Extension Services 100 (WEES100) and Wholesale Extension Service Local Access 100 (WES-LA 100), Service & Interface Description
The contact details to obtain further information for the service has been updated.

SIN 431 Issue 1.4 - Openreach Wholesale Extension Services 10, Wholesale End To End Extension Services (WES/WEES 10) and Wholesale Extension Service Local Access 10 (WES-LA 10), Service & Interface Description
The contact details to obtain further information for the service has been updated.

Published 07/03/07


SIN 432 Issue 1.4 - Openreach Wholesale Extension Services 10 and Wholesale End to End Extension Services Local Reach (WES/WEES 10LR), Service Description
The SIN has been amended to note that a current limitation of the WES/WEES 10LR Network Terminating Equipment is the blocking of certain Layer 2 control protocols, e.g. Bridge Protocol Data Unit (BPDU – Spanning Tree).

Published 05/03/07


SIN 466 Issue 2.0 - Openreach Network Backhaul Services, Service & Interface Description
This SIN has been reissued to include Openreach Network Backhaul Services 10000 and Openreach Network Backhaul Services 100 Fast Ethernet, and clarify to the Resilience Options available.

Published 01/03/07


SIN 390 Issue 2.4 - BT’s managed IP VPN services, MetroVPN and VPN EquIP, Service Interface
In this issue of SIN 390 the section on the 100M Flex access speed has been amended to remove details of future changes that will not now be implemented.

SIN 432 Issue 1.3 - Openreach Wholesale Extension Services 10 and Wholesale End to End Extension Services Local Reach (WES/WEES 10LR), Service Description
This issue of SIN 432 has revised power requirements for the Openreach Network Terminating Equipment.

Published 21/02/07


SIN 181 Issue 1.3 - Fixed Fee Charging
In this issue of SIN 181 attention is drawn to the notification in SIN 182 of the withdrawal of Meter Pulse Facility and the reference for the characteristics of Meter Pulse Facility have been changed from BS 6305 to SIN 354.

SIN 182 Issue 2.1 - Payphone Exchange Line Service
The information in SIN 182 on access from Payphone Exchange Lines to numbers with fixed fee charges has been updated.

Published 29/01/07


SIN 385 Issue 2.6 - BT IP Clear Service Description
SIN 385 has been amended to show that Autonegotiation needs to be set to ‘ON’ for the GiGE interface, Border Gateway Protocol enhancements have been added on the DSL interface, redundant information removed from the SIN and editorial changes made.

Published 17/01/07


SIN 311 issue 2.5 - BT LAN Extension Service 100, Service Description
This SIN now states that the BT LAN Extension Service 100 is not available for new supply.

SIN 431 Issue 1.3 - Openreach Wholesale Extension Services 10, Wholesale End to End Extension Services (WES/WEES 10) and Wholesale Extension Service Local Access 10 (WES-LA 10), Service & Interface Description
SIN 431 has been updated by the addition of Wholesale Extension Service Local Access 10.

SIN 433 Issue 1.3 -
Openreach Wholesale Extension Service 100 (WES 100), Wholesale End to End Extension Services 100 (WEES100) and Wholesale Extension Service Local Access 100 (WES-LA 100), Service & Interface Description
SIN 433 has been updated by the addition of Wholesale Extension Service Local Access 100.

SIN 436 Issue 1.3 - Openreach Wholesale Extension Service 1000 LAN & 1000ER (WES 1000 LAN, WES1000ER), Wholesale End to End Extension Service 1000 &1000ER (WEES1000 LAN, WEES 1000ER) and Wholesale Extension Service Local Access 1000 LAN (WES-LA 1000 LAN), Service & Interface Description

SIN 436 has been updated by the addition of Wholesale Extension Service Local Access 1000 LAN (Local Area Network).

SIN 437 Issue 1.2 - Openreach Wholesale Extension Service 1000 SAN (WES1000 SAN), Wholesale End to End Extension Service 1000 SAN (WEES1000 SAN) and Wholesale Extension Local Access Services 1000 SAN (WES-LA 1000 SAN), Service & Interface Description

SIN 437 has been updated by the addition of Wholesale Extension Local Access Services 1000 SAN (Storage Area Network).

Published 21/12/06


SIN 347 Issue 3.3 - BT Datastream Service, Service Description and Interface Specification
This issue of SIN 347 provides details of capped rate profiles which may be applied to BT Datastream Max /Max Premium products from 31st December 2006.

SIN 386 Issue 3.0 - BT IPstream Office, BT IPstream Home, BT IPstream Max & BT IPstream Max Premium Products, Service Description and Interface Specification
This issue of SIN 386 provides details of capped rate profiles which may be applied to BT IPstream Max /Max Premium products from 31st December 2006.

Published
01/12/06


SIN 246 Issue 2.0 - BT MegaStream 140, Service Description & Withdrawal Notification
This issue of SIN 246 gives notification that BT plans to withdraw the BT MegaStream 140 service in December 2006.

Published
16/11/06


SIN 368 Issue 1.2 - Index of Protocol Implementation Conformance Statements (PICS) for ISDN 2e and ISDN 30e Customer Interfaces, Technical Information For Suppliers
The hyperlinks in SIN 368 have been updated due to the publication of updated issues of SIN 369 Parts B, D and E.

SIN 369 Part B Issue 1.1 - Protocol Implementation Conformance Statements (PICS) for ISDN 2e: Basic Access - Layer 1, Technical Information For Suppliers

A note has been added to a Protocol Implementation Conformance Statement to show that some, but not all, BT Network Terminations operating point-to-point will accommodate round trip delays in the range 10μs to 42μs.

SIN 369 Part D Issue 1.1 - Protocol Implementation Conformance Statements (PICS) for ISDN 2e: Basic Access - Layer 2, Technical Information For Suppliers

A note has been added to a Protocol Implementation Conformance Statement to show that some, but not all, BT Network Terminations support the Subsidiary Network Capability to transmit I frames in the own receiver busy condition.

SIN 369 Part E Issue 1.1 - Protocol Implementation Conformance Statements (PICS) for ISDN 30e: Primary Rate Access - Layer 2, Technical Information For Suppliers
A note has been added to a Protocol Implementation Conformance Statement to show that some, but not all, BT Network Terminations support the Subsidiary Network Capability to transmit I frames in the own receiver busy condition. An error has been corrected to now show that Service Access Point Identifier 63 is Not Applicable since the relevant Terminal Endpoint Identifier management procedure is not supported, as correctly shown in the PICS.

Published
10/11/06


SIN 171 Issue 9.0 - BT ISDN 2 (Using limited ETSI Call Control), Service Description and Withdrawal Notification
This SIN gives notification that BT plans to withdraw the BT ISDN 2 (Using limited ETSI Call Control) service in July 2007. Changes have also been made to the section on Anonymous Call Rejection whilst information on future developments, Customers' Premises Equipment development facilities and the completed UK Number Change Programme has been removed.

SIN 232 Issue 5.0 - BT ISDN 30 (I.421) Service, Service Description and Withdrawal Notification
This SIN gives notification that BT plans to withdraw the BT ISDN 30 (I.421) service in July 2007. Changes have also been made to the section on Anonymous Call Rejection whilst information on future developments, Customers' Premises Equipment development facilities and the completed UK Number Change Programme has been removed.

SIN 312 Issue 1.7 - BT ISDN Services, Overview
SIN 312 has been updated to include the withdrawal of some ISDN services in 2007 as notified in SIN 171 (BT ISDN 2 Using limited ETSI Call Control), SIN 275 (BT Highway) and SIN 232 (BT ISDN 30, I.421). Reference to SIN 277 (Impact on Terminal Equipment of changes to the dialled digit numbering in the public PSTN and ISDN) has been removed as SIN 277 was withdrawn and the relevant ISDN information it contained is now published in SIN 261, Annex C.

Published 9/11/06


SIN 275 Issue 6.0 - BT Highway – BT’s Lowband Digital Access Service, Service Description & Withdrawal Notification
Notification is given in this issue of SIN 275 of the planned withdrawal of Home Highway in February 2007 and Business Highway in July 2007. Notice is also given that Openreach plans to withdraw both Digital Home and Digital Business, its wholesale equivalent of Home Highway and Business Highway, in July 2007.

Published 2/11/06


SIN 450 Issue 1.0 - BT Wholesale, BT IPstream Advanced Services, End User Speed Control and Downstream Quality of Service, Service Description
SIN 450 gives notice of the planned launch on 28 November 2006 of BT Wholesale, BT IPstream Advanced Services, End User Speed Control and Downstream Quality of Service and describes the service.

SIN 427 Issue 1.0 BT Wholesale Application Driven QoS, Service & Interface Description
SIN 427 gives notice of the planned launch on 28 November 2006 of BT Wholesale Application Driven Quality of Service and describes the service.

Published 25/10/06


SIN 182 Issue 2.0 - Payphone Exchange Line Service
In this issue of SIN 182 Called Party Answer has been added and notification is given for the withdrawal of Meter Pulse Facility

Published 20/10/06


SIN 376 Issue 1.2 - BT Wholesale Broadband SHDSL Interface Description
SIN 376 has been amended to provide further information on the connection arrangements when the BT Wholesale Broadband SHDSL service is presented at a standard BT NTE5 network termination.

Published 19/10/06


STIN 456 Issue 2.0 - BT IPstream SID for Authentication and Accounting, Service & Interface Description
STIN 456 has been amended in several areas. Further detail has been given for the Service Identifier format. For Accounting Request the Service Identifier will now be associated with the Calling-Station-ID attribute, not the Class attribute. Authentication and Accounting is now shown as two separate features that can be ordered independently.

Published 17/10/06


SIN 466 Issue 1.1 - Openreach Network Backhaul Services, Service & Interface Description
Editorial changes have been made in this issue of SIN 466 that includes a revised Figure 1.
SIN 466 describes the Next Generation Networks Openreach Network Backhaul Services (ONBS) product that will connect BT’s 21CN MSAN and Metro nodes with 100 Mbit/s and 1000 Mbit/s circuits.

Published 10/10/06


SIN 431 Issue 1.2 - Openreach Wholesale Extension Services 10 and Wholesale End to End Extension Services (WES/WEES 10), Service & Interface Description
The Wholesale End to End Extension service 10 has been added to this issue of SIN 431. This provides a 10 Mbit/s uncontended transmission path, routed via the Openreach network, cabled directly between third party customer sites.

SIN 432 Issue 1.2 - Openreach Wholesale Extension Services 10 and Wholesale End to End Extension Services Local Reach (WES/WEES 10LR), Service Description

The Wholesale End to End Extension service 10LR has been added to this issue of SIN 432. This provides a 10 Mbit/s uncontended transmission path, routed via the Openreach network, cabled directly between third party customer sites.

SIN 433 Issue 1.2 - Openreach Wholesale Extension Service 100 (WES 100) and Wholesale End to End Extension Services 100 (WEES100), Service & Interface Description
The Wholesale End to End Extension service 100 has been added to this issue of SIN 433. This provides a 100 Mbit/s uncontended transmission path, routed via the Openreach network, cabled directly between third party customer sites.

SIN 434 Issue 1.2 - Openreach Wholesale Extension Service 155 (WES 155) and Wholesale End to End Extension Services 155 (WEES155), Service & Interface Description
The Wholesale End to End Extension service 155 has been added to this issue of SIN 434. This provides a 155 Mbit/s uncontended transmission path, routed via the Openreach network, cabled directly between third party customer sites.

SIN 435 Issue 1.2 - Openreach Wholesale Extension Service 622 (WES622) and Wholesale End to End Extension Service 622 (WEES622), Service & Interface Description
The Wholesale End to End Extension service 622 has been added to this issue of SIN 435. This provides a 155 Mbit/s uncontended transmission path, routed via the Openreach network, cabled directly between third party customer sites.

SIN 436 Issue 1.2 - Openreach Wholesale Extension Service 1000 LAN & 1000ER (WES 1000 LAN, WES1000ER) and Wholesale End to End Extension Service 1000 &1000ER (WEES1000 LAN, WEES 1000ER), Service & Interface Description
Wholesale End to End Extension services have been added to this issue of SIN 436. These provide an uncontended transmission path, routed via the Openreach network, cabled directly between third party customer sites.

SIN 437 Issue 1.1 - Openreach Wholesale Extension Service 1000 SAN (WES1000 SAN) and Wholesale End to End Extension Service 1000 SAN (WEES1000 SAN), Service & Interface Description
Wholesale End to End Extension services have been added to this issue of SIN 437. These provide an uncontended transmission path, routed via the Openreach network, cabled directly between third party customer sites.

SIN 444 Issue 1.1 - Openreach Backhaul Extension Services 10, (BES 10), Service & Interface Description
SIN 444 has been re-issued to update the service description to comply with Equivalence of Input requirements.

SIN 445 Issue 1.1 - Openreach Backhaul Extension Services 100 (BES 100), Service & Interface Description
SIN 445 has been re-issued to update the service description to comply with Equivalence of Input requirements.

SIN 446 Issue 1.1 - Openreach Backhaul Extension Services 155 (BES 155), Service & Interface Description
SIN 446 has been re-issued to update the service description to comply with Equivalence of Input requirements.

SIN 447 Issue 1.1 - Openreach Backhaul Extension Services 622 (BES 622), Service & Interface Description
SIN 447 has been re-issued to update the service description to comply with Equivalence of Input requirements.

SIN 448 Issue 1.1 - Openreach Backhaul Extension Services 1000 /1000ER (BES 1000/1000ER), Service & Interface Description
In this issue of SIN 448 the service description has been updated to be Equivalence of Input compliant and the BES1000 Extended Reach product added.

SIN 459 Issue 1.0 - Openreach Wholesale Extension Services 2500 (WES 2500) and Wholesale End to End Extension Services 2500 (WEES 2500), Service Description
Openreach Wholesale Extension Services & Wholesale End to End Extension Services operate at a speed of 2.488Gbit/s (STM-16) and can be used to provide transparent transport for equipment with STM 16 interfaces such as SDH equipment, ATM switches or IP routers

SIN 460 Issue 1.0 - Openreach Wholesale Extension Services 10000 (WES 10000) and Wholesale End to End Extension Services (WEES 10000) Service Description
SIN 460 describes the Openreach Wholesale Extension Services 10000 (WES10000) and Wholesale End to End Extension Services (WEES 10000). The WES/WEES 10000 services operate at a speed of 10.3125 Gbit/s for 10GBase-LR (10 Gigabit Ethernet LAN PHY), and 9.95328 Gbit/s for both STM-64 (10 Gigabit SDH) and 10GBase-LW (10 Gigabit Ethernet WAN PHY). The WES/WEES 10000 service can be used as an STM-64 SDH transport service or used to interconnect Local Area Networks incorporating a 10 Gigabit Ethernet backbone

SIN 462 Issue 1.0 - Openreach Backhaul Extension Services 2500 (BES 2500), Service Description
SIN 462 describes the Openreach Backhaul Extension Services 2500 that operate at a speed of 2.488Gbit/s. They can be used to provide transparent transport for equipment with STM-16 interfaces such as SDH equipment, ATM switches or IP routers with Packet over SONET interfaces

SIN 463 Issue 1.0 - Openreach Backhaul Extension Services 10000 (BES 10000), Service Description
SIN 463 describes the Openreach Backhaul Extension Services 10000 (BES10000) that operate at a speed of 10.3125 Gbit/s for 10GBase-LR (10 Gigabit Ethernet LAN PHY) and 9.95328 Gbit/s for both STM-64 (10 Gigabit SDH) and 10GBase-LW (10 Gigabit Ethernet WAN PHY). The services can be used as an STM-64 SDH transport service or used to interconnect Local Area Networks incorporating a 10 Gigabit Ethernet backbone.

SIN 465 Issue 1.1 - Openreach WES Aggregation Service, Service & Interface Description
An additional source for further information has been added to the contacts section of SIN 465.

Published 29/9/06


SIN 188 Issue 5.0 - BT LAN Extension Services 1, 2, 10 & 10 Local Reach (LES 1, 2, 10 & 10LR)
This issue of SIN 118 gives notification of the withdrawal of the BT Local Area Network Extension Service 1 on 30 September 2006. This issue contains a withdrawal notification.

SIN 233 Issue 2.0 - BT Fibre Distributed Data Interconnection Services 1 & 2 (FIS 1 & 2) -Service Description & Withdrawal Notification
This issue of SIN 233 gives notification of the withdrawal of the Fibre Distributed Data Interface Interconnection Services 1 &2.

SIN 234 Issue 2.0 - BT Fibre Distributed Data Interconnection Services 3 & 4 (FIS 3 & 4) -Service Description & Withdrawal Notification

This issue of SIN 224 gives notification of the withdrawal of the Fibre Distributed Data Interface Interconnection Services 3 & 4.

Published 22/9/06


STIN 427 Issue 1.8 - BT Wholesale Application Driven QoS Service & Interface Description Associated with STIN 427 are Web Service Definition Language files for Interface & Event Specifications.
STIN 427 has been updated following receipt of feedback from the trial of BT Wholesale Application Driven QoS

Published 8/9/06


SIN 465 Issue 1.0 - Openreach WES Aggregation Service, Service & Interface Description
Wholesale Extension Services (WES) are high speed, point-to-point data circuits that are permanently connected and available 24 hours a day, 365 days per year. They provide a secure link between a third party customer site and a Communications Provider’s network at their own site.

Published 1/9/06


STIN 450 Issue 1.3 - BT Wholesale - BT IPstream Advanced Services - End User Speed Control and Downstream Quality of Service Service Description
STIN 450 has been amended as a result of feedback received from the trial.

Published 31/8/06


SIN 373 Issue 3.1 - BT WaveStream Connect™ Service Description & Interface
The service description in this issue of SIN 373 has been augmented to give information about the number of wavelengths normally provided.

SIN 287 Issue 3.0 - BT Call Mapping Service, Service Description & Withdrawal Notification
SIN 287 gives notification that the planned withdrawal date for access to the BT Call Mapping Service via a Digital Private Network Signalling System No. 1 interface has been brought forward to 15 November 2006.

Published 17/8/06


SIN 458 Issue 1.2 - Openreach Backhaul Network Services (BNS ), Service & Interface Description
The product description in this issue of SIN 458 has been amended to give more prominence to Base Station Controller sites.

Published 4/8/06


SIN 354 Issue 4.0 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Supplementary Services available on the Analogue Line Interface.
This issue of SIN 354 contains a number of withdrawal notifications, additions and corrections.
Withdrawal notification is given for Charge Advice, Night Busying, analogue DDI, and Meter Pulse Facility whilst Called Party Answer has been included in the list of supplementary services. The Annexes to the SIN now have an additional column showing the supplementary services to be provided on BT's 21st century network together with their operating codes. The service names used for diversion facilities have been updated and corrections and additions made to the associated operating codes in the Annexes.

Published 1/8/06


SPIN 097 - Release 15 Maintenance Release 1, Scheduled for 31st July
This Service Provider Industry Notification (SPIN) is applicable to Wholesale Access PSTN, Wholesale Digital Access and Wholesale ISDN30 products and advises of the Release 15, Maintenance Release 1 of the Service Provider Gateway (SPG) on Monday 31st July 2006.

Published 26/7/06


SIN 133 Issue 4.0 - The BT Cardway Service - Service Description
SIN 133 has been updated to include Internet Protocol access to the BT Cardway service via a secure connection across BT's Multi Protocol Label Switching network

Published 17/7/06


STIN 454 Issue 1.0 - BT IPstream Session Steering Service and Interface Description

STIN 457 Issue 1.0 - BT IPstream Weighted Session Allocation, Service & Interface Description

Trial concluded

Withdrawn 6/7/06


SIN 225 Issue 4.0 - BT ISDNconnect, Service Description & Withdrawal Notification
This SIN now gives notification that the BT ISDNconnect Service will not be available for new supply from 31/08/06 and that BT plans to withdraw the BT ISDNconnect Service in the second half of 2007.

Published 22/6/06


SIN 287 Issue 2.0 - BT Call Mapping Service, Service Description & Withdrawal Notification
SIN 287 now contains notification that BT plans to withdraw access to the BT Call Mapping Service via a DPNSS interface in the second half of the year 2007.

Published 8/6/06


SIN 353 Issue 3.0 - BT Public Switched Telephone Network (PSTN): Technical Characteristics of the Direct Dialling In (DDI) Analogue Line Interface & Withdrawal Notification
SIN 353 has been updated to give notification that BT plans to withdraw the analogue DDI (Direct Dialling In) interface in December 2006.

Published 7/6/06


SIN 458 Issue 1.1 - Openreach Backhaul Network Services (BNS ), Service & Interface Description
Further detail has been added to the description of Openreach's Backhaul Network Services in this issue of SIN 458.

Published 5/6/06


SIN 351 Issue 4.5 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Single Analogue Line Interface
SIN 351 has been amended to include an option for the line polarity of a calling terminal to be reversed when a call is answered.

Published 26/5/06


SIN 373 Issue 3.0 - BT WaveStream Connect™ Service Description & Interface
SIN 373 has been updated with the addition of FICON Express, STM 64 & 10 Gbit/s Ethernet customer interfaces, together with new radial distance limits.

Published 19/5/06


SIN 329 Issue 9.6 - BT Broadband IP Products - Interface Specification
This issue of SIN 329 gives notification of the withdrawal of the BT IPstream 500 and BT IPstream S products.

Published 4/5/06


SIN 347 Issue 3.2 - BT DatastreamService, Service Description and Interface Specification
This issue of SIN 347 introduces BT Datastream Aggregate Access Booking Ratios that may be used to improve the utilisation of the Aggregate Access Connection.

Published 2/5/06


SIN 240 Issue 6.0 - BT Switched Multi-Megabit Data Service (SMDS), Service Description & Withdrawal Notification
SIN 240 has been withdrawn as the Switched Multi- Megabit Service has been withdrawn.

Published 28/4/06



SPIN 096 Launch Of Wholesale Access Release 15 - 24th April 2006
This Service Provider Industry Notification is applicable to Wholesale Access PSTN, Wholesale Digital Access and Wholesale ISDN30 products. It provides notification of the launch of the latest enhancements to the Wholesale Access portfolio of products, under the title of Release15.

Published 24/4/06


SIN 222 Issue 2.4 - BT ISDN 30 - Service Description
This Suppliers Information Note describes the BT ISDN 30 (DASS) service, based on DASS 2 (Digital Access Signalling System No. 2). This issue has been updated to include the availability of ACR and announce the progressive withdrawal of CCRD, TLID and CCI following the implementation of 21CN.

SIN 261 Issue 5.3 - BT ISDN 2e and ISDN 30e (ISDN30 (I.421) using full ETSI Call Control - Service Description
This SIN describes the BT ISDN 2e and ISDN 30e ETSI services. This issue includes updates to ACR, CD and Outgoing Call Barring specification and inclusion of Called Party Number information previously published in SIN 277. Also the removal of reference to ISDN Terminal Equipment Compatibility Laboratory which has now ceased.

Published 21/4/06



SIN 329 Issue 9.5 - BT Broadband IP Products - Interface Specification

In this issue of SIN 329 the maximum number of simultaneous sessions for the 622 Mbit/s BT Central L2TP passthrough product has been increased from 25,600 to 32,000. Content made redundant by the withdrawal of the 622 Mbit/s LNS Central product has been removed.

SIN 412 3.2 - 622Mb Edgeless L2TP BT Central Product For BT IPStream- Interface Characteristics
This SIN has been updated to increase the maximum number of simultaneous sessions from 25,600 to 32,000 for the 622 Mbit/s rate.

Published 4/4/06


SIN 376 Issue 1.1 -BT Wholesale Broadband SHDSL Interface Description
The SIN has been updated to show that from 30 June 2006 new orders will be met by providing End Users with a Network Termination Equipment 5 rather than a Service Specific Front Plate.

SIN 404 Issue 1.3 - BT DataStream Symmetric - Service Description and Interface Specification
SIN 404 has been updated to show that from 30 June 2006 new orders will be met by providing End Users with a Network Termination Equipment 5 rather than a Service Specific Front Plate. Obsolete text on port reservation has also been removed.

SIN 405 Issue 1.3 - BT IPstream Symmetric - Service Description and Interface Specification
The SIN has been updated to show that from 30 June 2006 new orders will be met by providing End Users with a Network Termination Equipment 5 rather than a Service Specific Front Plate.

Published 31/03/06


SIN 458 Issue 1.0 -Openreach Backhaul Network Services (BNS ), Service & Interface Description
Openreach Backhaul Network Services are high speed, point-to-point uncontended data circuits that offer Communications Providers links between Local Loop Unbundling co-mingling sites and one or more of the Communications Providers' points of presence

Published 29/03/06



SIN 275 Issue 5.3 - BT Highway - BT’s Lowband Digital Access Service, Service Description
SIN 275 has been updated to advise that Home Highway is not available for new supply and Business Highway will be withdrawn from new supply on 10th April 2006.

SIN 352 Issue 2.4 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Multi-Line Analogue Line Interface
SIN 352 has been updated to remove text from clause 4.2 that described a 35 mA constant current earth calling seize condition.

Published 23/03/06


SIN 392 Issue 1.3 - BT Dial IP SurfNet Service Description
This issue of SIN 392 contains changes to the RADIUS interface, due to BT's network equipment being updated, and the addition of the TCP Clear protocol.

Published 22/03/06


SIN 426 Issue 1.0 - FacilityLine Ethernet Option, Service Description
Following a successful trial of the FacilityLine Ethernet Option, the Suppliers' Trial Information Note has been republished as a Suppliers' Information Note.

Published 16/03/06


SIN 418 Issue 1.1 - BT Wholesale Web Call Connect, Service & Interface Description
In this issue of SIN 418 the IPsec connection details have been updated with Firewall inter-operability information and call state guidelines

Published 03/03/06



SIN 386 Issue 2.0 - BT IPstream Office, BT IPstream Home, BT IPstream Max & BT IPstream Max Premium Products, Service Description and Interface Specification
.
The IPstream Max and IPstream Max Premium services have been added to this issue of SIN 386

Published 02/03/06


SIN 329 Issue 9.4 - BT Broadband IP Products - Interface Specification
SIN 329 has been updated to add Gigaword to the Radius Accounting clauses

Published 01/03/06



SIN 347 Issue 3.1 - BT Datastream Service, Service Description And Interface Specification

The Interleaving information in this SIN has been updated for the introduction of BT Datastream Max.

Published 24/02/06



SIN 412 Issue 3.1 - 622Mb Edgeless L2TP BT Central Product For BT IPStream- Interface Characteristics

This SIN has been re-issued to correct a typographical error in clause 2.7.1

Published 16/02/06


STIN 457 Issue 1.0 BT IPstream Weighted Session Allocation, Service & Interface Description
This STIN describes the trial of a potential enhancement to the BT Ipstream service that proportionally allocate end user sessions between BT Centrals of different sizes, based on the bandwidth of each BT Central in a customer’s domain

Published 08/02/06


SIN 346 Issue 2.6 - BT ADSL Interface Description
This SIN has been updated to cover 21CN versions of ADSL, the possibility of ADSL 2 plus and CPE filters to ETSI standard TS101 952.

Published 03/02/06


SIN 408 Issue 2.1 - BT Openzone - Service Description
SIN 408 has been reissued to update the service description.

Published 02/02/06


SIN 418 Issue 1.1 - BT Wholesale Web Call Connect, Service & Interface Description
In this issue of SIN 418 the IPsec connection details have been updated with Firewall inter-operability information and call state guidelines

Published 03/03/06



SIN 386 Issue 2.0 - BT IPstream Office, BT IPstream Home, BT IPstream Max & BT IPstream Max Premium Products, Service Description and Interface Specification
.
The IPstream Max and IPstream Max Premium services have been added to this issue of SIN 386

Published 02/03/06


SIN 329 Issue 9.4 - BT Broadband IP Products - Interface Specification
SIN 329 has been updated to add Gigaword to the Radius Accounting clauses

Published 01/03/06



SIN 347 Issue 3.1 - BT Datastream Service, Service Description And Interface Specification

The Interleaving information in this SIN has been updated for the introduction of BT Datastream Max.

Published 24/02/06



SIN 412 Issue 3.1 - 622Mb Edgeless L2TP BT Central Product For BT IPStream- Interface Characteristics

This SIN has been re-issued to correct a typographical error in clause 2.7.1

Published 16/02/06


STIN 457 Issue 1.0 BT IPstream Weighted Session Allocation, Service & Interface Description
This STIN describes the trial of a potential enhancement to the BT Ipstream service that proportionally allocate end user sessions between BT Centrals of different sizes, based on the bandwidth of each BT Central in a customer’s domain

Published 08/02/06


SIN 346 Issue 2.6 - BT ADSL Interface Description
This SIN has been updated to cover 21CN versions of ADSL, the possibility of ADSL 2 plus and CPE filters to ETSI standard TS101 952.

Published 03/02/06


SIN 408 Issue 2.1 - BT Openzone - Service Description
SIN 408 has been reissued to update the service description.

Published 02/02/06


SIN 351 Issue 4.4 - BT Public Switched Telephone Network (PSTN): Technical
Characteristics Of The Single Analogue Line Interface

In this issue of the SIN the clauses describing on-line voltage and ringing have been updated to highlight changes that will be progressively introduced from the second half of 2006, although the descriptions of the BT network characteristics are unchanged. Reference to the "Recommended Standard for the UK National Transmission Plan", published by the Network Interoperability Consultative Committee, has also been added.

SIN 352 Issue 2.3 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Multi-Line Analogue Line Interface
In this issue of the SIN the clauses describing on-line voltage and ringing have been updated to highlight changes that will be progressively introduced from the second half of 2006, although the descriptions of the BT network characteristics are unchanged. Reference to the "Recommended Standard for the UK National Transmission Plan", published by the Network Interoperability Consultative Committee, has been added. Notice is also given of the withdrawal of the Low Loss Lines option.

Published 18/1/06


STIN 456 Issue 1.0 - BT IPstream SID for Authentication and Accounting, Service & Interface Description
This STIN provides details for the trial of the BT IPstream Service Identifier for Authentication and Accounting enhancement.

Published 13/1/06


STIN 455 Issue 1 - Increase in Sessions on 622Mb L2TP BT Central Product for BT Ipstream, Service & Interface Description
This Supplier’s Trial Information Note provides technical information on the trial of an increase to the session limit on the 622Mb L2TP BT Central Product for BT IPstream.

Published 12/01/06


STIN 443 Issue 1.0 - BT Central plus Static IP, Service & Interface Description

STIN 443 has been withdrawn and is now incorporated in SIN 329.

Withdrawn 3/2/06


SIN 347 Issue 3.0 - BT Datastream Service, Service Description and Interface Specification
SIN 347 has been updated to provide information on the introduction of BT Datastream Max and BT Datastream Max Premium End User Access options.

Published 29/12/05


SIN 329 Issue 9.3 - BT Broadband IP Products - Interface Specification
SIN 329 has been re-issued to add the product reporting options available, update lead-time information and clarify the information on charging for ports

Published 23/12/05


STIN 454 Issue 1.0 - BT IPstream Session Steering Service and Interface Description
STIN 454 provides technical information on a trial of the BT IPstream Session Steering enhancement. This enhancement will allow customers with at least one BT Central and BT IPstream end user product to return Session Steering “tokens” to BT indicating the preferred component (an L2TP Tunnel Switch/Home Gateway Router, a BT Central or a Group of BT Centrals) that an end user should be steered to.

Published 21/12/05


STIN 450 Issue 1.2 - BT Wholesale - BT IPstream Advanced Services - End User Speed Control and Downstream Quality of Service - Service Description
In this issue of the STIN clarification has been added on the compatibility of BT Central Products with the service, the naming convention of best efforts policies has been updated to “Throttle To_” naming and information has been added on interoperation with DSL Max."

Published 09/12/05


SIN 453 Issue 1.0 - BT Dense Wave Division Multiplex 10G Wavelength Services, Service & Interface Description
BT’s Dense Wave Division Multiplex 10G Wavelength Services are end-to-end managed wavelength services, utilising Dense Wave Division Multiplexing and offering very high bandwidth connectivity of 10 Gbit/s per wavelength

Published 07/12/05


SIN 311 Issue 2.4 - BT LAN Extension Service 100 - Service Description.
The maximum frame for the LAN Extension Service 100 has been corrected to be 1548 bytes in this edition of the SIN.

STIN 427 Issue 1.7 - BT Wholesale Application Driven QoS Service & Interface Description
In this issue of STIN 427 the Service Availability and Tariffs clause has been deleted and additional information added to the Methods & Events clauses. The associated Web Services Description Language Interface and Event files on the SINet site have also been updated.

Published 02/12/05


SIN 329 Issue 9.2 - BT Broadband IP Products - Interface Specification
In this issue of SIN 329 the maximum number of domain names per Central or Central Plus instance has been increased from 10 to 50 and in the Virtual Domain section the ‘!’ character has been added to those that cannot be used as part of the username/domain format.

Published 02/12/05


SIN 358 Issue 2.0 BT International FeatureNet Service, Technical Characteristics of the Interfaces & Service Withdrawal Notification
Notification of BT's intention to withdraw the International FeatureNet service on 21 January 2006 has been added to this SIN

Published 21/11/05


SPIN 094 - Wholesale Access, Launch Of eCo Repair Release 4.2
This Service Provider Industry Notification is for Wholesale Access PSTN, Wholesale Access Multi-Line, Wholesale Digital Access, Wholesale ISDN30 and Call Mapping Service Providers and advises of the release of version 14.1 of the Service Provider Gateway on 19th December 2005.

SPIN 095 - Wholesale Access, Launch of Release 14.1 - 19th December 2005
This Service Provider Industry Notification is for Wholesale Access PSTN, Wholesale Access Multi-Line, Wholesale Digital Access, Wholesale ISDN30 and Call Mapping Service Providers and advises of the release of version 4.2 of eCo repair on 19th December 2005.

Published 18/11/05


STIN 427 Issue 1.6 - BT Wholesale Application Driven QoS Service & Interface Description
STIN 427 has been reissued to updated the example for used to illustrate the applyQoSFeature exception INSUFFICIENT_ACCESS_LINE_RESOURCES. The associated Web Services Description Language Interface and Event files have also been updated.

SIN 452 Issue 1.0 Wireless Symmetric Broadband, Service Description
SIN 452 describes the characteristics of the Access and Layer 2 Tunnelling Protocol Handover interfaces available for the Wireless Symmetric Broadband service. Wireless Symmetric Broadband products are only available in selected areas of Lincolnshire.

Published 17/11/05


SIN 240 Issue 6.0 - BT Switched Multi-Megabit Data Service (SMDS), Service Description & Withdrawal Notification
The SMDS SIN has been updated to give notification of BT's plan to withdraw the service on
31 March 2006

Published 9/11/05


STIN 441 Issue 2.0 BT IPstream Home Max & BT IPstream Office Max , Service Description And Interface Specification

STIN 442 Issue 2.0 BT Datastream Office Max & BT Datastream Home Max, Service Description And Interface Specification
These STINs have been reissued to update them for the Beta trial of this service.

Published 8/11/05


STIN 439 Issue 1.0 - BT IPstream Home 2000 Service & Interface Description
STIN 439 has been withdrawn. SIN 329 contains information regarding Home 2000.

Withdrawn 1/11/05


SIN 429 Issue 1.1 - BT LAN Extension Service 10000, Service Description
The SIN has been amended to correct typographical errors in the data rates in clause 3. These data rates now align with the rates in Tables 1 & 2.

Published 28/10/05


SPIN 093 - Wholesale Access Launch of Release 14 22nd August 2005

SPIN 092 -
Wholesale Access Deployment of Release 13.1 – Now 25th April 2005

Withdrawn as time expired.

Withdrawn 23/11/05


SIN 421 Issue 2.0 - BT Mediareach, Service Description and Withdrawal Notification
SIN 421 has been updated to give notification of the withdrawal of the BT Mediareach service.

Published 25/10/05



SIN 329 Issue 9.1 - BT Broadband IP Products - Interface Specification

SIN 329 has been updated to clarify the performance of the products and the acceptable formats when selecting domain names. A service selection restriction for IPstream 500 has also been removed.

Published 21/10/05



STIN 427 Issue 1.5 - BT Wholesale Application Driven QoS, Service & Interface Description
STIN 427 has been reissued to update the getAccessLineStatus method. The associated Web Services Description Language files, referred to in Annex B of STIN 427, have also been updated on the SINet site.

Published 20/10/05



SIN 386 Issue 1.9 - BT IPStream Office & BT IPStream Home Products, Service Description and Interface Specification
SIN 386 has been reissued to clarify the relative performance of the BT IPstream products, described in the SIN, when there is congestion.

Published 17/10/05



SIN 375 Issue 1.3 - Terminal Equipment Spectral Power Requirements

This Suppliers Information Note (SIN 375) relates to the requirement for equipment connected to all metallic twisted pairs of the BT access network to comply with the "Specification of the Access Network Frequency Plan (ANFP) applicable to transmission systems used on the BT Access Network" This issue has been updated to take account of the new issue of the BT ANFP published by NICC.

SIN 355 Issue 1.5 - BT Analogue Private Circuits: Technical Characteristics Of 2-Wire And 4-Wire Analogue Interfaces
This Supplier’s Information Note (SIN) specifies those technical characteristics of 2-wire and 4-wire analogue interfaces of Private Circuits provided by BT and delivered to a customer at the Network Termination Point (NTP). Clauses 4.6 and 5.1 – have been updated to reference the new BT ANFP Issue 3 (ND1602:2005/08) and DSL Guidelines document (ND1405:2005/08) published by NICC.

Published 23/09/05


SIN 353 Issue 2.2 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Direct Dialling In (DDI) Analogue Line Interface.
SIN 353 has been given an editorial update and the Annex on Analogue Data Transmission has been replaced by a reference to SIN 351.

Published 20/09/05


SIN 440 Issue 1 - BT Ethernet VLAN Service, Service Description
The BT Ethernet VLAN (Virtual Local Area Network) service is a Layer 2 any-to-any service using Ethernet accesses at different rates. The service will enable customers to deploy private networks based on Ethernet.

Published 19/09/05


STIN 427 Issue 1.4 - BT Wholesale Application Driven QoS Service & Interface Description
STIN 427 has been reissued to update the interface descriptions. The associated Web Services Description Language files, referred to in Annex B of STIN 427, have also been updated on the SINet site.

Published 16/09/05


SIN 220 Issue 2.0 - BT Flexible Bandwidth Service (FBS), Service Description & Withdrawal Notification
SIN 220 has been reissued to give notification that it is planned to withdraw the BT Flexible Bandwidth Service in March 2006.

Published 13/09/05


SIN 377 Issue 1.6 BT Hosted VoIP Services Service Description
The SIN has been updated in a number of areas including the Media Gateway Control Protocol specification reference, reference sources and the DPNSS annex.

Published 26/08/05


SIN 383 Issue 2.0- BT WebPort Service Description
The WebPort SIN has been updated due to the withdrawal of the DVD feature (Dialled Number Information String via Domain Name Server) from the WebPort service.

Published 25/08/05


SPIN 088 - Deployment of Wholesale Access Release 12.1:15th November 2004

Time expired.

Withdrawn 15/08/05



SIN 438 Issue 1.1 - BT Radio Broadband Service for ISPs (Northern Ireland), Service Description

This issue of SIN 438 has been amended to clarify the text in several places.

Published 11/08/05



SIN 396 Issue 2.4 - BT Dense Wave Division Multiplex Wavelength Services, Service Description

In this update to SIN 396 the 850nm option for 622 Mbit/s interfaces has been removed.

Published 02/08/05


SPIN 090 - Update on Wholesale Access New Network Features For Analogue and Digital Access Lines

Time expired.

Withdrawn 02/08/05


SIN 354 Issue 3.1 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Supplementary Services available on the Analogue Line Interface.
Fixed Line SMS Service has been added to the list of Supplementary Services in SIN 354, together with a reference to SIN 413 for details of this service.

Published 27/07/05


SPIN 093 - Wholesale Access Launch of Release 14, 22nd August 2005
This Service Provider Industry Notification provides details of the deployment and the new features of Wholesale Access Release 14.

Published 22/07/05


SPIN 089 - BT IPStream – Proposed introduction of session based Down Stream Quality of Service. ( QoS )

This SPIN has been superseded by STIN 450.

Withdrawn 21/07/05


SIN 350 Issue 1.3 - BT Public Switched Telephone Network (PSTN): Network Tones and Announcements
This issue of SIN 350 has been published to correct an error in the cadence specified for Special Call Waiting Indication.

Published 20/07/05


SIN 329 Issue 9.0- BT Broadband IP Products - Interface Specification
This issue of SIN 329 contains a number of changes. BT IPstream S now offers a 100 baseT interface, there are changes to how BT’s network will accept an end user login to a virtual domain, the BT IPstream S combined router/modem has changed to a Type 6 installation and notice is given that the 622 LNS product will not be available for new supply from 1st September 2005.

SIN 412 Issue 3.0. - 622Mb Edgeless L2TP BT Central Product For BT IPStream- Interface Characteristics
Issue 3.0 of SIN 412 has been published to remove the erroneous notification, given in issue 2.0, that it was planned to withdraw the 622Mb Edgeless L2TP BT Central Product for BT IPStream.

SIN 349 Issue 2.0 - BT Metallic Path Facility Interface Description
SIN 349 has been updated to align with the BT MPF Specification and now covers all varieties of MPF including full and sub-loop, classic and shared.

Published 15/07/05


STIN 450 Issue 1.1 - BT Wholesale - BT IPstream Advanced Services - End User Speed Control and Down Stream Quality of Service Service Description
The information contained in this Suppliers’ Trial Information Note (STIN) relates to the potential trial of BT IPstream Advanced Services – End User Speed Control (EUSC) and Down Stream Quality of Service (QoS). References to charges have been removed in this issue.

Published 11/07/05


SIN 412 Issue 2.0. - 622Mb Edgeless L2TP BT Central Product For BT IPStream- Interface Characteristics
This issue of SIN 412 gives notification of the withdrawal of the 622Mb Edgeless Layer 2 Tunnelling Protocol BT Central Product For BT IPStream

Published 1/07/05


SIN 329 Issue 8.1 - BT Broadband IP Products - Interface Specification
SIN 329 has been amended to update the numerical limit of Home Gateway Routers/Layer 2 Tunnelling Protocol Tunnel Switches that can be supported in a One-to-Many environment.

Published 8/06/05



STIN 450 Issue 1.0 - BT Wholesale - BT IPstream Advanced Services - End User Speed Control and Down Stream Quality of Service Service Description

The information contained in this Suppliers’ Trial Information Note (STIN) relates to the potential trial of BT IPstream Advanced Services – End User Speed Control (EUSC) and Down Stream Quality of Service (QoS).

Published 11/07/05


SIN 357 Issue 5.1 - BT FeatureNet™* Service:Technical Characteristics Of The Interfaces
In this update to SIN 357, FeatureView has been removed from the document following the withdrawal of the FeatureView interface. The description of the availability of Calling Line Identification information on outgoing calls to the public network has been updated to reflect the ongoing roll-out programme for this facility.

Published 6/06/05


SIN 275 Issue 5.2 - BT Highway - BT’s Lowband Digital Access Service, Service Description
In this issue of the SIN the product name "Select Services" has been updated to "Calling Features" and Presentation Number has been added to the lists of Calling Features.

Published 1/06/05


SIN 444 Issue 1 - BT Backhaul Extension Services 10 (BES 10), Service & Interface Description

SIN 445 Issue 1 - BT Backhaul Extension Services 100 (BES 100), Service & Interface Description

SIN 446 Issue 1 - BT Backhaul Extension Services 155 (BES 155), Service & Interface Description

SIN 447 Issue 1 - BT Backhaul Extension Services 622 (BES 622), Service & Interface Description

SIN 448 Issue 1 - BT Backhaul Extension Services 1000 (BES 1000), Service & Interface Description

These Suppliers Information Notes describe the interfaces provided with BT Backhaul Extension Services, together with other technical information. Backhaul Extension Services are high speed, point-to-point data circuits. They provide Operators using "Local Loop Unbundled" circuits with a connection between their equipment at a site with "unbundled" circuits and a site within their own network. The different services provide rates of 10 Mbit/s, 100 Mbit/s, 155 Mbit/s, 622 Mbit/s or 1000 Mbit/s.

Published 27/05/05


STIN 427 Issue 1.3 - BT Wholesale Application Driven QoS Service & Interface Description
STIN 427 has been updated with changes throughout the document. New versions of the associated Web Service Definition Language files for the Interface and Events have also been published.

Published 25/05/05


SIN 385 Issue 2.5 - IP Clear, Service Description
In this issue of SIN 385 the DSL shaping parameters in Table 1 have been corrected, a change made to PPPoA encapsulation with optional Radius Server authentication for the DSL service and the advice for customer's DSL splitters/filters has been clarified.

Published 06/05/05


SIN 351 Issue 4.3 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Single Analogue Line Interface
The previous issue of SIN 351 contained a reference to SIN 306 for a list of services that are not compatible with ADSL. SIN 306 has now been withdrawn so the reference has been changed to an equivalent list in SIN 346.

Published 04/05/05


SIN 329 Issue 8.0 - BT Broadband IP Products, Interface Specification
BT Central Plus Static IP has now been added to the Broadband IP Products covered by SIN329.

Published 29/04/05


SIN 374 Issue 1.3 - L2TP Interface for BT IPStream, Interface Characteristics
SIN 374 has been reissued to update the reference for the ATM Layer from SIN 306
(BT VideoStream Services) to SIN 347 (BT DataStream Office Services) due to the withdrawal of SIN 306. The interface is unchanged.

Published 25/04/05


SPIN 092 - Wholesale Access Deployment of Release 13.1 – Now 25th April 2005
This Service Provider Industry Notification is for Wholesale Access PSTN and Multi-Line, Wholesale Digital Access, Multiline, Call Mapping and Wholesale ISDN30 Service Providers and advises of the release of version 13.1 of Wholesale Access on 25th April 2005. It replaces
SPIN 091 and updates the timetable for Release 13.1.

Published 22/04/05

SPIN 091 - Wholesale Access Deployment of Release 13.1 on 18th April 2005

Withdrawn 22/04/05


SIN 360 Issue 4.0 - Ethernet Customer Interfaces - Interface Characteristics
SIN 360 has been updated to include a FC/PC (Fibre Connector / Planar Convex) type connector for the 1000 Mbit/s Ethernet interface.

SIN 415 Issue 4.0 - BT Ethernet Private Circuits - Service Description

This issue of SIN 415 includes the new GigeStream service.

Published 19/04/05


SPIN 091 Wholesale Access Deployment of Release 13.1 on 18th April 2005
This Service Provider Industry Notification provides details of the deployment and the new features of Wholesale Access Release 13.1.

Published 23/03/05


SPIN 081 BT Wholesale Access Phase 2 Service Provider Product

SPIN 082 Launch of Wholesale Access Phase 2A 15 Dec 2003

SPIN 083 BT Wholesale, Pricing of Wholesale Access Chargeable Features, Effective Date 29th March 2004

SPIN 084 Launch of Wholesale Access Phase 2B - 29 March 2004

SPIN 087 Deployment of Wholesale Access Release 12: 30th August 2004

These SPINS have been withdrawn as they are time expired.

Withdrawn 18/03/05


SIN 139 Issue 2.2 - 2048 kbit/s Interface to the BT Network Providing Access to International 1544 kbit/s Networks, Service Description and Interface Specification
The SIN has been updated to reflect a change of product name.

Published 07/03/05


STIN 441 - BT IPstream Home Max & BT IPstream Office Max, Service & Interface Description
Supplier’s Trial Information Note 441 provides technical information on the trial of the IPstream Home Max & IPStream Office Max service.

STIN 442 - BT Datastream Office Max, Service Description And Interface Specification
Supplier’s Trial Information Note 442 provides technical information on the Trial of the BT Datastream Office Max service.

Published 03/03/05


SIN 404 Issue 1.2 - BT DataStream Symmetric - Service Description and Interface Specification
This issue of the SIN gives notice that the ability to make port reservations will not be required, or available, from June 2005.


Published 02/03/05


SIN 286 Issue 2.2 BT LAN Extension Service 155, Service Description
Information that the BT LAN Extension Service 155A is no longer available for new supply has been added to the SIN.

SIN 293 Issue 2.2 BT LAN Extension Service 622, Service Description
Information that the BT LAN Extension Service 622A is no longer available for new supply has been added to the SIN.

SIN 345 Issue 1.4 BT Channel Extension Service 1000, Service Description
Information that the BT Channel Extension Service 1000A is no longer available for new supply has been added to the SIN.

STIN 443 Issue 1.0 BT Central plus Static IP, Service & Interface Description
This Supplier’s Trial Information Note provides technical information on the trial of the BT Central Plus Static IP service. The information applies to both the BT Central Plus Capacity Based Charging and BT Central Plus Capacity Based Charging with the Interface option Service, unless otherwise stated.

Published 25/02/05


SIN 306 Issue 6.1 - BT VideoStream Services, Service Description, Interface Specification & Withdrawal Notification

SIN 366 Issue4.0 - BT VideoStream Plus Services, Service Description, Interface Specification and Withdrawal Notification

Service withdrawal therefore SINs 306 and 366 have been withdrawn.

Withdrawn 23/02/05


SIN 408 Issue 4 - BT Openzone - Service Description
This SIN has been updated to include the IEEE 802.11g interface standard.

Published 4/02/05


SIN 351 Issue 4.2 BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Single Analogue Line Interface
This SIN has a number of amendments including a correction to the timing characteristics for the recognition of Multi-Frequency Tone Signalling, advice that in future line current is likely to be towards the lower limits of the existing range and clarification of the characteristics for call arrival indication.

SIN 352 Issue 2.2 BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Direct Dialling In (DDI) Analogue Line Interface.
This SIN has a number of amendments including a correction to timing characteristics for the recognition of Multi-Frequency Tone Signalling, advice that in future line current is likely to be towards the lower limits of the existing range and clarification of the characteristics for call arrival indication.

Published 3/02/05


SIN 390 Issue 2.3 - BT’s managed IP VPN services, MetroVPN and VPN EquIP - Service Description
This SIN has been updated to add a 155M access speed to VPN EquIP.

Published 27/01/05


SIN 329 Issue 7.1 - BT Broadband IP Products - Interface Specification
SIN 329 has been updated to incorporate reference to the new BT IPstream Home 2000 Service.

SIN 386 Issue 1.8 - BT IPStream Office & BT IPStream Home Products, Service Description and Interface Specification
SIN 386 has been updated to include the new BT IPstream Home 2000 Service.

Published 18/01/05


SIN 373 Issue 2.4 - BT WaveStream Connect™ Service Description & Interface
The SIN has been updated to remove the WaveStream Connect Digital Video interface. This interface has been withdrawn in accordance with the advance notice given in the previous issue of the SIN.

Published 06/01/05


SIN 378 Issue 2.0 - BT MacroNet™ Service Description and Service Withdrawal Notification

SIN time expired.

Withdrawn 04/01/05


SIN 284 Issue 1.4 BT Red CARE - Service Description and Technical Information for Suppliers
This SIN has been updated with a new telephone number for the RedCARE General Information Helpdesk and by the removal of time expired information on ADSL compatibility.

Published 7/12/04


SIN 385 Issue 2.4 - IP Clear, Service Description
Border Gateway Protocol Standard Community Attributes transparency, internal Border Gateway Protocol Multipath and “Always Compare Multi-Exit Discriminator” have been added in this issue

SIN 390 Issue 2.2 - BT’s Managed IP VPN Services, MetroVPN and VPN EquIP, Service Interface
This SIN has been re-issued to remove 2M Metro Flex access and 2M Flex rates below 256 kbit/s.

Published 02/12/04


SIN 432 Issue 1.1 - BT Wholesale Extension Services 10 Local Reach (WES 10LR) - Service Description
In this issue the text giving anticipated uses for WES 10LR has been removed.

SIN 295 Issue 1.4 BT Basic X.25 Direct - Service Description
This SIN has been re-issued to update the contact details and add information about service provision in Hull and the Channel Islands.

Published 01/12/04


SIN 437 Issue 1.0 - BT Wholesale Extension Service 1000 (SAN Extension)
This service provides 1.062Gbit/s full duplex Fibre Channel, point-to-point, permanently connected data circuits between third party customer's sites and Communications Provider’s sites.

SIN 432 Issue 1.0 - BT Wholesale Extension Services 10 Local Reach (WES 10LR)
This service provides 10 Mbit/s, point-to-point, permanently connected data circuits between third party customer sites and Communications Provider’s sites.

SIN 118 Issue 4.5 - BT LAN Extension Services 1, 2, 10 & 10 Local Reach (LES 1, 2, 10 & 10LR)
This SIN has been updated to introduce the LES 10LR service variant. Other changes are that the LES 2 service is now shown as unavailable for new supply, the LES 10 maximum frame size has been corrected to be 1548 bytes, and the LES 10 power requirements have been updated.

Published 26/11/04


SIN 415 Issue 3.0 - BT Ethernet Private Circuits, Service Description
In this issue of the SIN the minimum bandwidth option has been changed from 0.5Mbit/s to 0.2Mbit/s.

Published 10/11/04


SIN 390 Issue 2.1 - BT’s managed IP VPN services, MetroVPN and VPN EquIP - Service Interface
SIN 390 has been updated to amend the 100M Flex bandwidth options.

SPIN 090 - Update on Wholesale Access New Network Features For Analogue and Digital Access Lines
This Service Provider Industry Notification provides details of network features will be available on Wholesale Access from 24th January 2005.

Published 4/11/04


SIN 396 Issue 2.3 - BT Dense Wave Division Multiplex Wavelength Services Service Description
The SIN has been updated to give more information on the wavelength options available.

Published 3/11/04


SIN 324 Issue 3.4 - FeatureNet Embark Service Description
The SIN has been updated to refer to the Featureline Corporate Access lines pricing variant.

STIN 439 Issue 1.0 - BT IPstream Home 2000 Service & Interface Description

Supplier’s Trial Information Note 439 provides technical information on the trial of the IPstream Home 2000 service.

Published 01/11/04


STIN 427 Issue 1.2 - BT Wholesale Application Driven QoS, Service & Interface Description
This Suppliers’ Trial Information Note has been updated throughout, including amendments to Figures 2 & 3. References for Interface & Event Specification Web Service Definition Language files have been added to Annex B.

SIN 438 Issue 1.0 - BT Radio Broadband Service for ISPs (Northern Ireland), Service Description

This Suppliers’ Information Note describes the characteristics of the Access and L2TP Handover interfaces available for the BT Radio Broadband Service for ISPs in Northern Ireland.

Published 29/10/04


SIN 264 Issue 6.6 - BT CellStream, Service Description
The SIN has been amended to add a new Class of Service model based on Differentiated Services Code Points.

SIN 291 Issue 2.5 - BT FrameStream, Service Description
The SIN has been amended to add a new Class of Service model based on Differentiated Services Code Points.

SIN 385 Issue 2.3 - IP Clear, Service Description
The SIN has been updated to clarify the Class of Service Enabled, Differentiated Services Code Point description.

Published 26/10/04


SIN 431 Issue 1.1 -BT Wholesale Extension Services 10 (WES 10), Service & Interface Description
This Suppliers Information Note (SIN) describes the customer interface provided with BT Wholesale Extension Services 10 (WES10).

SIN 433 Issue 1.1 - BT Wholesale Extension Service 100, Service & Interface Description
This Suppliers Information Note (SIN) describes the customer interface provided with the BT Wholesale Extension Services 100 (WES 100).

SIN 434 Issue 1.1 - BT Wholesale Extension Service 155, Service & Interface Description
This Suppliers Information Note (SIN) describes the customer interface provided with Wholesale Extension Service 155 (WES 155).

SIN 435 Issue 1.1 - BT Wholesale Extension Service 622, Service & Interface Description
This Suppliers Information Note (SIN) describes the customer interface provided with the BT Wholesale Extension Services 622 Service (WES 622).

SIN 436 Issue 1.1 -BT Wholesale Extension Service 1000, Service & Interface Description
This Suppliers Information Note (SIN) describes the Wholesale Extension Service 1000 (WES 1000).

SPIN 089 - BT IPStream –Proposed introduction of session based Down Stream Quality of Service. ( QoS )
This SPIN is intended to give a preliminary view of the development of the session based, Downstream QoS (Assured Rate) feature planned to be made available as an option on BT’s ADSL IPStream products.

Published 22/10/04


SIN 431 Issue 1.0 -BT Wholesale Extension Services 10 (WES 10), Service & Interface Description
This Suppliers Information Note (SIN) describes the customer interface provided with BT Wholesale Extension Services 10 (WES10).

SIN 433 Issue 1.0 - BT Wholesale Extension Service 100, Service & Interface Description
This Suppliers Information Note (SIN) describes the customer interface provided with the BT Wholesale Extension Services 100 (WES 100).

SIN 434 Issue 1.0 - BT Wholesale Extension Service 155, Service & Interface Description
This Suppliers Information Note (SIN) describes the customer interface provided with Wholesale Extension Service 155 (WES 155).

SIN 435 Issue 1.0 - BT Wholesale Extension Service 622, Service & Interface Description
This Suppliers Information Note (SIN) describes the customer interface provided with the BT Wholesale Extension Services 622 Service (WES 622).

SIN 436 Issue 1.0 -BT Wholesale Extension Service 1000, Service & Interface Description
This Suppliers Information Note (SIN) describes the Wholesale Extension Service 1000 (WES 1000).

SPIN 088 - Deployment of Wholesale Access Release 12.1:15th November 2004
Deployment of Wholesale Access Release 12.1, 15th November 2004

Published 15/10/04


SIN 271 Issue 1.3 - MultiTelex, X.25 Line Delivery Interface And Signalling Requirements
TheSINhasbeenupdatedtoadvise thatthe service is no longer available for new supply.

Published 05/10/04


SIN 329 Issue 7.0 - BT Broadband IP Products - Interface Specification
The SIN has been updated to add an interface option for BT Central Plus with Capacity Based Charging.

Published 04/10/04


SIN 398 Issue 1.0 - Microconnect Distributed Antennas, Service Description
This document was previously published as a Suppliers' Trial Information Note and is now published as a Suppliers' Information Note. The text has been amended to remove the clause concerning approval requirements for terminal equipment.

Published 28/9/04

SIN 325 Issue 2.1 - Compliance of Terminal Equipment - Information for Suppliers
This SIN has time expired.

Withdrawn 28/9/04


SIN 390 Issue 2.0 - BT’s managed IP VPN services, MetroVPN and VPN EquIP - SERVICE DESCRIPTION
The SIN has been amended to add 2M flex and 100M flex deliveries.

Published 27/9/04


STIN 427 Issue 1.1 - BT Wholesale Application Driven QoS, Service & Interface Description
STIN 427 has been updated to improve the clarity of the diagrams.

Published 23/9/04


SIN 359 Issue 1.2 - BT Text Direct™ - Service Description
SIN 359 has been updated to remove the clause on the compliance of terminal equipment, and for editorial changes

Published 22/9/04


SIN 415 Issue 2.0 - BT Ethernet Private Circuits, Service Description
SIN 415 has been amended to reflect a lowering of the minimum bandwidth option from 2 Mbit/s to 0.5 Mbit/s.

Published 17/9/04


SIN 366 Issue 4.0 - BT VideoStream Plus Services, Service Description, Interface Specification and Withdrawal Notification
In this issue of SIN 366 a statement has been added to say that the BT VideoStream Plus service is not available for new supply, and that it is planned to withdraw the service in January 2005.

Published 14/9/04


SPIN 087 - Deployment of Wholesale Access Release 12: 30th August 2004
This Service Provider Industry Notification (SPIN) highlights the new features that will be available with Wholesale Access from 30th August 2004. This SPIN replaces SPIN 086.

Published 26/8/04

SPIN 086 - Deployment of Wholesale Access Release 12: 30th August 2004
This SPIN has been replaced by SPIN 087.

Withdrawn 26/8/04


STIN 427 Issue 1.0 - BT Wholesale Application Driven QoS Service & Interface Description
This Suppliers' Trial Information Note provides information on the trial of a potential service - BT Wholesale Web Application Driven QoS. This service enables Service Providers to set up Quality of Service features on BT Broadband access lines, through the use of a Web Service interface.

Published 25/8/04


SIN 329 Issue 6.5 - BT Broadband IP Products Service Description
The SIN has been amended to reflect the new planning limits to be introduced for the BT IPStream 500, BT IPStream S500, BT IPStream Home 250, BT IPStream Home 500 and BT IPStream Office 500 products.

SIN 386 Issue 1.7 - BT IPStream Office & BT IPStream Home Products Service Description and Interface Specification
The SIN has been amended to reflect the new planning limits to be introduced for the BT IPStream 500, BT IPStream S500, BT IPStream Home 250, BT IPStream Home 500 and BT IPStream Office 500 products.

Published 19/8/04


SPIN 086 - Deployment of Wholesale Access Release 12: 30th August 2004
This Service Provider Industry Notification (SPIN) highlights the new functionalities that will be available from 30th August 2004. This SPIN replaces SPIN 085.

Published 18/8/04

SPIN 085 - Deployment of Wholesale Access Release 12: 30th August 2004
This SPIN has been replaced by SPIN 086.

Withdrawn 18/8/04


SIN 345 Issue 1.3 - BT Channel Extension Service 1000 Service Description
This Suppliers Information Note describes the BT Storage Area Network Fibre Channel Extension Service 1000. It has been updated to replace "route distance" by "radial distance" in the Service Outline clause.

Published 17/8/04


SIN 418 Issue 1.0 - BT Wholesale Web Call Connect Service & Interface Description
BT intend to launch the BT Wholesale Web Call Connect service during September 2004, following a trial earlier this year. The service enables customers (Public Electronic Communications Service providers) to offer their end-users the ability to use the Internet to initiate PSTN calls between two parties. The service is enabled through use of a subset of the Parlay X standard. This SIN provides functional information relating to the signalling mechanism to be used between the BT network and customers' equipment

Published 16/8/04


SIN 346 Issue 2.5 - BT ADSL Interface Description
The SIN has been updated to be compatible with a new repair process for problem lines.

SIN 347 Issue 2.6 - BT DataStream Office Services Service Description And Interface Specification
The SIN has been updated to include a new repair process for problem lines.

Published 11/8/04


SPIN 085 - Deployment of Wholesale Access Release 12: 30th August 2004
BT Wholesale have developed further features for the Wholesale Access portfolio. This Service Provider Industry Notification lists the new features that will be available from 30th August 2004.

Published 5/8/04


SIN 329 Issue 6.4 - BT Broadband IP Products - Interface Specification

SIN 386 Issue 1.6 - BT IPStream Office & BT IPStream Home Products, Service Description and Interface Specification

These SINs have been updated by the addition of the BT IPStream Home 250 service.

Published 3/8/04


SIN 287 Issue 1.4 - BT Call Mapping Service
The contact details for obtaining information on service availability and tariffs have been updated.

Published 29/7/04


SIN 277 - Impact on Terminal Equipment of Increased Dialled Digit Number Length in the PSTN and ISDN
SIN 277 has been withdrawn as it is time expired.

Withdrawn 22/7/04


SIN 312 Issue 1.6 - BT ISDNServices Overview
This issue of the SIN has been editorially updated removing reference to SIN 277 which has been withdrawn.

Published 22/7/04


SIN 349 Issue 1.5 - BT Metallic Path Facility Interface Description
This Suppliers Information Note (SIN) describes the technical characteristics of BT Metallic Path Facility (MPF). Thisissue of the SINhasbeen editorially updated.

Published 21/7/04


SIN 430 Issue 1.0 - BT LAN Extension Service 2500 Service Description.
This Suppliers’ Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 2500 (LES 2500). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers.

Published 19/7/04


SIN 133 Issue 3.0 - The BT Cardway Service - Service Description
ThisSINhasbeenre-issuedtoaddGSM to the list of ways in which the service may beaccessed.


SIN 350 Issue 1.2 - BT Public Switched Telephone Network (PSTN): Network Tones And Announcements
The SIN has been amended to add Interrupted Dial Tone as an alternative name for Special Proceed Indication.

Published 15/7/04


SIN 429 Issue 1.0 - BT LAN Extension Service 10000, Service Description
The BT LAN Extension Service 10000 provides 10 Gbit/s STM-64 SDH or Ethernet links available as a LES 10000A protected service and a LES 10000B unprotected service.

Published 23/6/04


SIN 360 Issue 3.0 -Ethernet Customer Interfaces - Interface Characteristics
SIN 360 describes the characteristics of Ethernet Interfaces used in the BT Network. This issue of the SIN has been amended to include 10 Gbit/s interfaces.

Published 22/6/04


SIN 227 Issue 3.4 - CDS Calling Line Identification Service - Service Description
This Suppliers Information Note (SIN) has been prepared to give technical information about the BT CDSÔ * Calling Line Identification (CLI) Service which is provided over the analogue BT local access network. Issue 3.4 contains editorial changes.

Published 9/06/04


SIN 321 Issue 5.1 - BTnet Dial IP Service Description
All services except the BTnet Platinum service have been removed from the SIN and the description of the interfaces to the service are now by reference to SIN 389 for BT SurfPort

Published 3/06/04


SIN 413 Issue 2.0 - Fixed Line SMS Service - Service Description and Interface Specification
In this issue the ES 201 912 Protocol 2 option and curfew section have been removed. The Enhanced Messaging Service section has been modified to indicate that EMS services are not currently provided by the BT SMS Service and a section on SPAM control has been added.

Published 28/05/04


SIN 181 Issue 1.2 - Fixed Fee Charging
This Suppliers' Information Note (SIN) describes the Fixed Fee Charges used over the BT PSTN. Issue 1.2 reflects a general editorial update.

SIN 182 Issue 1.2 - Payphone Exchange Line Service
This Suppliers' Information Note (SIN) describes the BT Payphone Exchange Line classification. Issue 1.2 reflects Directory Enquiry liberalisation.

Published 27/05/04


SIN 118 Issue 4.4 -LAN Extension Service Nos.1,2 &10 (LES 1,2 & 10) - Service Description
This issue of the SIN includes the information that LES 1 is unavailable for new supply and that for the LES 10 service the maximum frame size has been increased to 6000 bytes .

SIN 311 Issue 2.3 -BT LAN Extension Service 100 - Service Description.
In this issue of the SIN the maximum frame size has been increased to 6000 bytes.


Published 21/05/04


SIN 399 Issue 1.2 - BT BusinessPort Service Description
In this issue of the SIN a Multilink Protocol option has been added.

Published 19/05/04


SIN 389 Issue 1.2 - BT SurfPort and SurfPort24 Service Description
In this issue of the SIN a Multilink Protocol option has been added, the terminal equipment approval information removed and editorial amendments made.

SIN 240 Issue 5.2 - BT Switched Multi-Megabit Data Service
This SIN describes the BT SMDS service. Issue 5.2 amends the document's content to reflect that the BT International SMDS service has been withdrawn, the up-issue also removes the Terminal Equipment Approval Requirements section from the SIN.

SIN 392 Issue 1.2 - BT Dial IP SurfNet Service Description
In this issue of the SIN the clause on terminal equipment approval requirements has been removed and other editorial changes made.

Published 14/05/04


SIN 383 Issue 1.5 - BT WebPort Service Description
In this issue of the SIN more detail has been added to the description of RADIUS (Remote Authentication Dial In User Service) port use and editorial changes made.

Published 13/05/04


SIN 251 Issue 1.4 - Private Circuit Services Evolving Network Modernisation And Its Effect On Analogue Private Circuits
This SIN establishes the current status of, and BT's current thinking for, the core and access networks and as a consequence the future availability of BT’s d.c. based private circuit products. Issue 1.4 adds a contact point for further Central London Zone (CLZ) information.

SIN 139 Issue 2.1 - 2048 kbit/s Interface to the BT Network Providing Access to International 1544 kbit/s Networks, Service Description and Interface Specification
This SIN describes the BT International Leased Line Service that provides 2048 kbit/s digital interfaces to international point-to-point digital private circuits which operate at 1544 kbit/s. Issue 2.1 updates ITU-T Recommendation detail.

Published 12/05/04


SIN 357 Issue 5.0 BT FeatureNet™* Service:Technical Characteristics Of The Interfaces
This issue of the SIN gives notification that the FeatureView interface is to be withdrawn and that a Symmetrical Digital Subscriber Line Interface is to be added for FeatureNet 5000

Published 11/05/04


SIN 275 5.1 -BT Highway, BT's Lowband Digital Access Service, Service Description
This issue of the SIN has an updated list of computer Operating Systems for which software drivers are supplied to enable connection to the BT Highway USB port.

Published 06/05/04


SIN 347 Issue 2.5 - BT DataStream Office Services, Service Description And Interface Specification.
This SIN has been updated to give notice of revised upstream Cell Delay Variation Tolerance values, due for introduction in August 2004

Published 04/05/04


SIN 329 Issue 6.3 - BT Broadband IP Products, Interface Specification
SIN 329 provides a description of the BT Central, BT Central Plus, BT IPStream S500/S1000/S2000 and BT IPStream 500 services. The SIN has been amended to reflect the impact of Capacity charging on BT Central Plus, edits have also taken place to statements associated with RADIUS accounting messages.

SIN 386 Issue 1.5 - BT IPStream Office & BT IPStream Home products, Service Description and Interface Specification
SIN 386 describes the BT IPStream Office & BT IPStream Home products. Issue 1.5 updates the basic architecture of the BT IPStream Office/Home products diagram in Section 3 of the publication.

SIN 405 Issue 1.2 - BT IPStream Symmetric, Service Description and Interface Specification
SIN 405 describes the BT IPStream range of products (both symmetric and asymmetric) that enables a Service Provider to access multiple End-Users via an IP network. Issue 1.2 updates the BT IPStream overview diagram of Section 3.

Published 30/04/04


STIN 418 Issue 1- BT Wholesale Web Call Connect, Service & Interface Description
BT intend to trial the BT Wholesale Web Call Connect (WWCC) service during Summer 2004. The service enables customers (Public Electronic Communications Service providers) to offer their end-users the ability to initiate PSTN calls between two parties via the Internet. The service is enabled through use of a subset of the Parlay X standard. This STIN provides functional information relating to the signalling mechanism to be used between the BT network and customers' equipment.

Published 26/04/04


SIN 421 Issue 1.0 - BT Mediareach, Service Description
The Mediareach service is a point to BT Tower oriented Ethernet service enabling customers to link their premises to a BT Tower hub. The service is designed to provide access to Media/Broadcast services available at BT Tower. The service is scheduled for launch April 2004.

Published 15/04/04

SIN 365 Issue 2.2 - Introduction of ATM Infrastructure-Technical Information for Suppliers

SIN time expired.

Withdrawn 4/05/04


SIN 161 Issue 4.2 - BT LAN Extension Service No.3 - Description
In this issue of the SIN the Terminal Equipment approval clause has been removed, editorial changes made and a statement added saying that the service is no longer available for new supply.

SIN 367 Issue 2.2 - Characteristics of the BT Network: Electrical Safety and EMC
This Suppliers' Information Note (SIN) describes the electrical safety and EMC characteristics of the interfaces of BT’s fixed telecommunications network as presented to customers at the Network Termination Point (NTP). Issue 2.2 contains editorial changes.

Published 08/04/04


SIN 355 Issue 1.4 - BT Analogue Private Circuits: Technical Characteristics Of 2-Wire And 4-Wire Analogue Interfaces
This Suppliers' Information Note specifies the technical characteristics of 2-wire and 4-wire analogue interfaces of Private Circuits provided by BT. This up-issue reflects publication of UK Statutory Instruments which amend the Radio Equipment & Telecommunications Terminal Equipment Regulations 2000. The source url for the BT ANFP specification has also been updated.

SIN 300 Issue 1.1 - BT MusicLine 2000, Service Description
MusicLine 2000 is a highly flexible point-to-point service that meets the needs of Radio and TV broadcasters. The standard service consists of a Forward Direction 15kHz stereophonic service. Options allow for additional Forward Direction or Reverse Direction 15kHz channels, as well as the inclusion of multiple control channels and multiple 64kbit/s channels. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN, and updates the BT Broadcast Services contact details.

Published 05/04/04


STIN 426 Issue 1.0 - FacilityLine Ethernet Option, Service Description
This STIN describes the FacilityLine Ethernet Option and advises BT's intention to trial the service offering during Spring/Summer 2004. The FacilityLine Ethernet Option is a point-to-BT Tower oriented additional Ethernet service available to new and existing users of a FacilityLine Bothways service.

Published 31/03/04


SIN 340 Issue 1.2 - BT MediaNet 2000 & BT MediaNet 2000 Lite Service Description
This Suppliers' Information Note describes the BT MediaNet 2000 and BT MediaNet 2000 Lite services. The services form a closed user group private distribution network available within a distance of 35km from a switch located at BT Tower London. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN, and updates the BT Broadcast Services contact details.

Published 24/03/04


SIN 306 Issue 6.1 - BT VideoStream Services, Service Description, Interface Specification & Withdrawal Notification
The BT VideoStream Service offers Providers of Electronic Communications Networks and Providers of Electronic Communications Services with a network service to support the delivery of video based multi-media content services and data services to their End Users. The SIN has been re-issued to give notification that the planned withdrawal date for the service has changed.

SIN 366 Issue 3.0 - BT VideoStream Plus Services, Service Description and Interface Specification
The BT VideoStream Plus Service offers Providers of Electronic Communications Networks and Providers of Electronic Communications Services with a network service to support delivery of video based multi-media content services and data services to their End Users. The SIN has been updated to show that the End User interface is now self-install only.

Published 19/03/04


SIN 329 6.2 - BT Broadband IP Products - Interface Specification
SIN 329 provides a description of the BT Central, BT Central Plus, BT IPStream S500/S1000/S2000 and BT IPStream 500 services. The SIN has been amended to update the text describing the availability on BT Central of Point to Point Protocol over Ethernet.

Published 12/03/04


SIN 314 Issue 1.2 - BT Digital Video Broadcast (DVB) service using the Asynchronous Serial Interface (ASI)
The BT DVB ASI service allows transport streams formatted in accordance with EN 50083-9 to be carried across its telecommunications network via terminal multiplex equipment located at customers premises. Issue 1.2 updates technical references and Broadcast Services contact details, the Approval Requirements clause has also been edited.

Published 02/03/04


SPIN 084 - Launch of Wholesale Access Phase 2B, 29 March 2004
BT Wholesale Access (WA), launched in September 2002, is a PSTN Service Provider (SP) product, which enables SPs to offer their own branded telephony service to their End Users using the BT network. BT will provide, repair and maintain these lines. BT will provide a consolidated bill to the SPs for all of their services. The SP sets its prices to End Users and bills End Users.

Published 01/03/04


SIN 425 Issue 1- BT MediaNet "Plus" Network Service, Interface Characteristics
The BT MediaNet “Plus” Network Service is a permanent closed-user-group distribution network solution. The BT Broadcast Services product provides a mechanism for aggregating a number of different signal types over a common transmission platform. The service is scheduled for launch 1st April 2004.

Published 25/02/04


SIN 375 Issue 1.2 - Terminal Equipment Spectral Power Requirements
This Suppliers' Information Note relates to the requirement for equipment connected to all metallic twisted pairs of the BT access network to comply with the "Specification of the Access Network Frequency Plan (ANFP) applicable to transmission systems used on the BT Access Network". This up-issue reflects publication of UK Statutory Instruments (SI) which amend the Radio Equipment & Telecommunications Terminal Equipment Regulations 2000. The source url for the BT ANFP specification has also been updated.

SIN 290 Issue 2.2 - BT MusicLine One Service Description
This service provides a mono audio circuit with a nominal bandwidth of 20Hz to 7.5kHz and a loss/frequency response of:- ±1.0dB across the frequency range. Typical uses would be high quality speech contribution and AM/ MW transmitter feeds. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN, and updates the BT Broadcast Services contact details.

Published 24/02/04


SIN 408 Issue 1.1 - BT Openzone - Service Description
This Supplier’s Information Note (SIN) describes the BT Openzone service and provides technical information for terminal equipment (TE) manufacturers and suppliers. In this issue the Terminal Equipment approval clause has been removed from the SIN and editorial changes made.

Published 23/02/04


SIN 218 Issue 2.2 - BT MegaStream 34 and MegaStream 34 Aggregate Service Description
This Suppliers' Information Note (SIN) describes the BT MegaStream 34 and MegaStream 34 Aggregate services and provides technical information for terminal equipment (TE) manufacturers and suppliers. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN; the publication has been re-formatted, a Glossary added, and Section numbering revised.

SIN 254 Issue 2.3 - BT KiloStream Aggregate Interface Service Description
This publication describes the BT KiloStream Aggregate service using a 2.048Mbit/s ITU-T G.703 interface. The service supports Aggregate to Single 64kbit/s X.21, Aggregate to n x 64kbit/s (X.21 and G.703), and Aggregate to Aggregate. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN and amends Section & Reference numbering.

Published 20/02/04


SIN 410 Issue 1.1 - BT WebPort Complete, Service Description
This SIN has been updated to remove the section on terminal equipment approval requirements and for editorial changes.

Published 13/02/04


SIN 347 Issue 2.4 - BT DataStream Office (Service Provider) Services, Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the launched version of BT DataStream Office services, which have undergone trial. In this issue the references to DataStream Home have been removed from the SIN.

SIN 380 Issue 1.1 - BT MetroNetWave Service, Service Description
The Introduction of this SIN has been updated to warn that the BT MetroNetWave Service is no longer available for new supply.

Published 11/02/04


SIN 158 Issue 3.2 - BT KiloStream n x 64kbit/s, Service Description
This publication describes the n x 64kbit/s KiloStream service using ITU-T G.703 and X.21 interface options. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN and amends Section & Reference numbering.

SIN 247 Issue 1.2 - BT International MegaStream 45, Service Description
This Suppliers' Information Note (SIN) describes the BT International MegaStream 45 service which provides an international high capacity digital service operating at 44.736Mbit/s. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN and amends Section & Reference numbering.

SIN 199 Issue 2.2 - International Private Circuit Managed Access Multi-Circuit, Service Description
This Suppliers' Information Note (SIN) describes the IPC Managed Access Multi-Circuit service using a 2.048 Mbit/s G.703 interface. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN and amends Section & Reference numbering.

Published 27/01/04


SPIN 077 - BT Wholesale ISDN30 Product

SPIN 076 - BT Wholesale Calls (Line Independent) Product

SPIN 075 - Broadband 60db Extended Reach

SPIN 071 - BT Wholesale ISDN30 Service Provider Product

Time Expired

Withdrawn 11/2/04


SPIN 074 - BT Virtual ISP

Time Expired

Withdrawn 3/2/04


SIN 414 Issue 1.1, BT RedCARE Secure IP - Service Description
This Suppliers’ Information Note (SIN) describes the BT RedCARE Secure IP service. Encrypted signalling is transported across customer WAN topology and the BT RedCARE network using Internet Protocol (IP) transactions, providing a highly secure alarm-signalling network solution. This up-issue reflects the current launch plan status of the service, and a minor edit to the digital private circuit statement of Section 4.1.

Published 19/01/04


Published 16/01/04

SIN 378 Issue 2.0 - BT MacroNet™ Service Description and Service Withdrawal Notification
Issue 2.0 of SIN 378 announces the planned withdrawal of the BT MacroNet service at the end of February 2004


Published 14/01/04

SIN 373 Issue 2.3 - BT WaveStream Connect™ Service Description & Interface Withdrawal Notification
This issue of the SIN gives notification that it is planned to withdraw the Digital Video (270Mbit/s) DVB ASI interface from the BT WaveStream Connect service.


Published 13/01/04

SIN 259 Issue 1.3 - SecureStream 300 Interface/Signalling Requirements and Service Description
This Suppliers' Information Note (SIN) describes the SecureStream 300 service which functions as a Virtual Private Data Network utilising the BT UK National Telex network at a rate of 300 bit/sec. This up-issue edits the Terminal Approval section, and amends the document's reference numbering.


SIN 220 Issue 1.2 - BT Flexible Bandwidth Service (FBS) Service Description
Flexible Bandwidth Service (FBS) is a network service, which provides an alternative to the complexities of building corporate private Time Division Multiplex (TDM) networks of bought-in multiplexers and private transmission circuits. In this issue the Terminal Equipment approval clause has been removed from the SIN and minor editorial changes made.

Published 09/01/04


SIN 242 Issue 2.3 - CDS Calling Line Identification Service Part 1 Idle State Down Stream Signalling Part 2 Loop State Signalling
This document describes requirements for Terminal Equipment (TE) intended to operate with BT's CDS Calling Line Identification (CLI) Service. In this issue the Terminal Equipment approval clause has been removed from the SIN and minor editorial changes made.

Published 08/01/04


STIN 406 Issue 1.0 - BT TalkStream Technology Trial

BT TalkStream Technology Trial Closed.

Withdrawn 13/1/04


Published 22/12/03

SPIN 083- BT Wholesale, Pricing of Wholesale Access Chargeable Features, Effective Date 29th March 2004
BT Wholesale Access (WA), launched in September 2002, is a PSTN Service Provider (SP) product, which enables SPs to offer their own branded telephony service to their customers using the BT network. A variety of additional chargeable features are being introduced as part of Phase 2B, scheduled for launch on 29th March 2004.


Published 17/12/03

SIN 233 Issue 1.2 - BT Fibre Distributed Data Interface Interconnection Services (FIS) 1 & 2 Service Description
The Fibre Distributed Data Interface (FDDI) Interconnection Services 1 & 2 (FIS 1 & 2) enable a customer to interconnect two or more FDDI Single Attachment Stations complying with ISO/IEC Standard 9314-3 without significant degradation of the data transfer rate. In this issue the clause on terminal approval requirements has been removed, and editorial changes made.

SIN 234 Issue 1.2 - BT Fibre Distributed Data Interconnection Services (FIS) 3 & 4 Service Description
The Fibre Distributed Data Interface (FDDI) Interconnection Services 3 & 4 (FIS 3 & 4) enable a customer to interconnect two or more FDDI Dual Attachment Stations complying with ISO/IEC Standard 9314-3 without significant degradation of the data transfer rate. In this issue the clause on terminal approval requirements has been removed, and editorial changes made.


SIN 341 Issue 1.0 - BT RedCARE Key Message
SIN 341 Issue 1.0 was published 29/03/2000 in advance of the intended introduction of the BT RedCARE Key Message Service; the SIN describes a service that allows alarm information to be transmitted to alpha numeric pagers. The service was not launched, and the SIN has therefore been withdrawn.

Withdrawn 11/12/03


Withdrawn 9/12/03

SIN 411 Issue 1.0 - DataStream Office & BT DataStream Home End-to-end ATM service category enhancements Service Description And Interface Specification
SIN 411 has been withdrawn. The contents of this SIN is now covered in SIN 347.


SIN 150 Issue 1.2 - BT International KiloStream X.21 bis (56kbit/s), Service Description
This document describes the BT KiloStream International Service using the X.21 bis (V.35) interface. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN.

Published 8/12/03


Published 7/12/03

SIN 420 Issue 1.0 - BT Broadband Voice, Service Description
BT Broadband Voice (BBV) provides a telephony service using customer broadband Internet connections as the network access medium. This Suppliers’ Information Note describes the customer-network interface characteristics associated with the BBV service; it should be noted that this is a non-physical IP interface via the Internet. The service is scheduled for launch December 2003.


Published 5/12/03

SIN 329 Issue 6.1 - BT Broadband Products, Service Description
This issue contains a number of changes including a simplified functionality 622 Mbps L2TP Network Server product and changes to reflect the launch of Point to Point Protocol over Ethernet with BT Central.


SIN 331 Issue 1.2 - BT 50 Baud Telex Service: Technical Characteristics of the Interface
This Suppliers' Information Note (SIN) describes the BT Telex service at a data rate of 50 Baud (Bd). This up-issue edits the Terminal Approval section, and amends the document's reference numbering

SIN 57 Issue 2.1 - BT KiloStream X.21 Interface, Service Description
This document describes the BT KiloStream Inland Service using the X.21 and X.21 bis (V.24 & V.35) interfaces. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN.

Published 2/12/03

SIN 148 Issue 1.1 - BT Racenet, Service Description
The BT Racenet service has been withdrawn, it offered a uni-directional distribution system carrying vision, audio, and data channels. The October 2002 launch of the BT L-Band service (interface described in SIN 407) introduced an enhanced uni-directional distribution product whilst enabling a migration path for existing Racenet customers.

Withdrawn 2/12/03


Published 1/12/03

SIN 312 Issue 1.5 - BT ISDNServices - Overview
A number of ISDN related SINs have been published since BT launched it’s first ISDN service and the purpose of this SIN is to provide an overview of BT's ISDN services and index the SINs related to them. This issue has been editorially updated.


SIN 347 Issue 2.3 - BT DataStream Office & BT DataStream Home (Service Provider) Services - Service Description And Interface Specification
This Supplier's Information Note describes the BT DataStream Office and BT DataStream Home services. This issue includes clarification of the queuing behaviour in DSLAMs, advice that CBR and VBR-rt VPs should not be overbooked (or contended) and corrections to headings in Tables 1 & 3.

Published 21/11/03


SIN 329 Issue 6.0 - BT Broadband IP Products Service Description
SIN 329 describes the BT IPStream family of products. The list of incompatible services has been updated to reflect the changed position with regard to Redcare and Featureline, and the SIN now shows that ports on BT Central Plus can be overbooked to a limit of 6250

Published 17/11/03


Published 10/11/03

SPIN 082 - Launch of Wholesale Access Phase 2A 15 Dec 2003
SPIN 082 gives notice of the availability of enhanced features on the BT Wholesale Access product from the 15th of December 2003.


Published 10/11/03

SIN 284 Issue 1.3 - BT RedCARE Service Description & Technical Information
This Suppliers Information Note gives information about the BT RedCARE Service which is provided from Protected Premises over the BT analogue local access network and the BT RedCARE network to an Alarm Receiving Centre (ARC). Issue 1.3 reflects the changing situation regarding ADSL compatibility with the BT RedCARE service.


SIN 297 Issue 4.1 - BT Featureline Service Description
Featureline is a service provided from BT’s public exchanges that offers customers facilities similar to those of a small Private Branch Exchange (PBX), but without the need for the customer to have switching hardware on their premises. In this issue of the Supplier’s Information Note the Terminal Equipment approval requirements clause has been deleted and editorial changes have been made.

SIN 347 Issue 2.2 - BT DataStream Office & BT DataStream Home (Service Provider) Services Service Description And Interface Specification
This Supplier’s Information Note describes the launched version of BT DataStream Office and BT DataStream Home services. This issue reflects changes in the compatibility with Redcare. There is also clarification that Virtual Channels of different ATM service categorised are prioritised differently in the DSLAM and that the end user modem parameters in the SIN describe the end user data rate that the end user access will support, rather than allowed Peak Cell Rate.

Published 7/11/03

SIN 346 Issue 2.4 BT ADSL Interface Description
This Supplier Information Note describes the interface presented at the end of an ADSL line at the end customer premises. The issue reflects the changing situation regarding the compatibility of ADSL lines and Redcare.



SIN 399 Issue 1.1 - BT BusinessPort Service Description
BusinessPort provides economical dial IP access to corporate host sites. In this issue of the SIN the Terminal Equipment approval requirements clause has been deleted and editorial changes have been made.

Published 6/11/03


Published 28/10/03

SIN 271 Issue 1.2 - MultiTelex X.25 Line Delivery Interface and Signalling Requirements
This Suppliers' Information Note (SIN) describes the “MultiTelex” multiple line delivery service. The “MultiTelex” service offers a direct digital leased line connection supporting up to 60 individual telex connections between a customer system and the BT Telex Network. Issue 1.2 removes the Terminal Equipment Approval Requirements section from the SIN and amends section, reference and table numbering.


SIN 94 Issue 1.2 - Telex Fallback and Monitor Units Technical Characteristics of the Interface
This Suppliers' Information Note (SIN) describes the technical characteristics of the interface for telex fallback and monitor units with the BT Telex network. Issue 1.2 removes the Terminal Equipment Approval Requirements section from the SIN, and amends section & reference numbering.

SIN 396 Issue 2.2. BT Dense Wave Division Multiplex Wavelength Services, Service Description
BT’s DWDM Wavelength services are end-to-end managed wavelength services, delivered over a BT provided customer private network, utilising Dense Wave Division Multiplexing and offering very high bandwidth connectivity of up to 2.5Gbit/s per wavelength. This SIN has been updated to show that at optical interfaces that are presented at FC/PC connectors there may also be an additional option to use SC/PC connectors.

Published 27/10/03

SIN 324 Issue 3.3. BT Feature net Embark. Service Description
Featurenet Embark enables customers with both large and very small sites to link together into a corporate telephone network, giving the benefit of a private network. In this issue of the SIN the clause on terminal equipment approval requirements has been removed.


SIN 320 Issue 1.2 - Serial Digital Video & Associated AES/EBU Digital Audio Circuit(s) - Service Description
This SIN describes the BT Serial Digital Video service which provides the transport of Serial Digital Component Video (SDCV) at 270 Mbit/s. This up-issue revises the audio detail to reflect the 2 AES option, clarifies 525 capability, revises the power option statement, updates standards reference detail, and removes the Terminal Equipment Approval Requirements section from the SIN. Service & marketing contact details have also been updated.

SIN 323 Issue 1.2 - Switched Serial Digital Video & Associated AES/EBU Digital Audio Circuit(s) - Service Description
This SIN describes BT's switched Serial Digital Video product, the switched option enhances the standard 270 Mbit/s Serial Digital Component Video (SDCV) transport service described in SIN 320. This up-issue revises the audio detail to reflect the 2 AES option, updates standards reference detail, and removes the Terminal Equipment Approval Requirements section from the SIN. Service & marketing contact details have also been updated.

SIN 266 Issue 1.2 - Analogue Presented Vision Circuits PAL System I Video Standard - Service Description
This SIN describes the BT analogue presented vision circuit which utilises the PAL System I video standard interface and is designed for the point to point transmission of unidirectional broadcast quality vision signals along with their associated audio, teletext and data signals. Separate sound circuits can additionally be provided. This up-issue revises the power option statement, removes phono connector test access reference, updates standards reference detail, and removes the Terminal Equipment Approval Requirements section from the SIN. Service & marketing contact details have also been updated.

SIN 265 Issue 2.3 - BT MediaNet 34 & BT MediaNet 155 Range - Service Description
The BT MediaNet 34 & 155 services provide multiple service delivery options for the transport of video, audio, and associated multimedia services between customer premises. This up-issue amends contact detail within Section 2.1, and removes the Terminal Equipment Approval Requirements section from the SIN.

Published 17/10/03


SIN 394 Issue 1.1 - BT Broadlook Service Description
The BT Broadlook service transports Serial Digital Component Video (SDCV) at 270 Mbit/s. The SDCV may also contain embedded AES digital audio signals conforming to SMPTE 272M. Issue 1.1 updates ITU-R recommendation references, and amends the 'Further information' contacts of Section 6. This up-issue also removes the Terminal Equipment Approval Requirements section from the SIN.

Published 16/10/03


SPIN 081 - BT Wholesale Access Phase 2 Service Provider Product
BT is developing new features and enhanced functionalities to its existing Wholesale Access Service Provider Product in line with industry and Oftel requirements as specified in the Oftel Statement – "Wholesale Line Rental: Oftel's conclusions - statement - 11 March 2003". As part of this development (referred to as the Wholesale Access Phase 2 Service Provider product), a customer trial is scheduled to commence on 5th January 2004.

Published 14/10/03


SIN 338 Issue 1.5 - BT LAN Extension Service 1000 - Service Description
This publication describes the BT Local Area Network (LAN) Extension Service 1000 (LES 1000). This up-issue of the SIN reflects the introduction of the LES 1000 ER (Extended Reach) product option.

SIN 278 Issue 1.4 - Enhanced Information Service for Emergency Calls - Service Description
This publication provides information about the BT Enhanced Information Service for Emergency Calls (EISEC), and the signalling mechanism to be used between the customer premise equipment and the BT network to access an EISEC-DB (data base for Emergency Authority access). This update clarifies the zone code information associated with mobile location data, and updates WXYZ values. The IPSpec Annex to the SIN has been updated to Issue 1.9.

Published 09/10/03


SIN 258 Issue 1.2 - BT FacilityLine 1 Service Description
This Suppliers' Information Note (SIN) describes the BT FacilityLine 1 service which provides the transparent transport of Serial Digital Component Video (SDCV) at 270Mbit/s. The SIN has been reviewed to update the ITU-R references, reflect 525/60 capability, revise the power arrangements statement, and remove the Terminal Equipment Approval Requirements section.

P
ublished 06/10/03


SIN 169 Issue 2.1 - BT International MegaStream (2Mbit/s) Service Description
The (BT) International MegaStream service provides an international point-to-point digital private circuit, enabling data transmission at a variety of rates. This SIN describes the 2Mbit/s customer interface, which offers useable customer data rates of 1920 kbit/s, 1984 kbit/s or 2048 kbit/s. This up-issue updates the ITU-T Recommendation references, amends the national MegaStream product consideration statement of Section 1, and removes the Terminal Equipment Approval Requirements section from the SIN.

P
ublished 03/10/03


Published 01/10/03

SIN 415 Issue 1.0 - MegaStream Ethernet - Service Description
This Suppliers' Information Note (SIN) provides information about the BT MegaStream Ethernet service which is scheduled to be launched late October / early November 2003. The MegaStream Ethernet service is a point to point or point to multipoint (aggregate), flexible bandwidth, connection oriented Ethernet data service enabling customers to link two or more of their sites together across the UK for LAN / WAN data applications at defined bandwidths from 2Mbit/s through to 100Mbit/s.


Published 29/9/03

SIN 412 Issue 1.0 - 622Mb Edgeless L2TP BT Central Product for BT IPStream - Interface Characteristics
Suppliers Trial Information Note 412 has been amended and published as SIN 412 for the launch of the 622Mb Edgeless L2TP BT Central Product for BT IPStream.

SIN 374v1.2 - L2TP Interface for BT IPStream - Interface Characteristics
SIN 374 describes the 155Mbits/s Layer 2 Tunnelling Protocol Interface available for BT IPStream. This issue updates it for the to introduction of IPStream Symmetric and the 622Mb Edgeless L2TP BT Central Product.

SIN 329 Issue 5.9 - BT Broadband IP Products - Service Description
SIN 329 describes the BT IPStream family of products. In this issue the changes include moving the previously published Addendum, for the 622Mb Edgeless L2TP BT Central Product, into the body of the document in preparation for the launch of this service.

SIN 386 Issue 1.4 - BT IPStream Office & BT IPStream Home products - Service Description and Interface Description
SIN 386 describes the BT IPStream Office & BT IPStream Home products. In this issue of SIN 386 the ATM to IP overheads in clause 4.3 have been clarified.

SIN 336 Issue 2.2 - Universal Serial Bus (USB). For the Network Interface Characteristics
SIN describes the characteristics of the Universal Serial Bus (USB) Interface to the BT Network. In issue 2.2 the clause on terminal approval requirements has been removed and editorial changes made.


SIN 379, Issue 1.2, BT NetStream 16 & BT NetStream 16 Longline - Service Description.
NetStream 16 is a Synchronous Digital Hierarchy point to point leased Virtual Container VC4 high-speed digital service supporting customer access which conforms to ITU-T Rec. G.707. NetStream 16 Longline enables a number of digital leased lines at satellite sites to be aggregated for onward delivery to an SDH Mux at a common major customer site and presented as a structured VC4 via an STM-N interface (where N = 1,4,16). This up-issue to the SIN introduces an STM-1 optical customer interface option. Further information relating to STM-1 SDH customer interfaces is contained in SIN 333 'SDH Customer Interfaces at the STM-N level (where N=1,4,16)'. The up-issue also removes the Terminal Equipment Approval Requirements section from the SIN.

Published 26/9/03


Published 24/9/03

SIN 286 Issue 2.1 - BT LAN Extension Service 155 Service Description
SIN 286 describes the interface characteristics of the BT Local Area Network Extension Service 155 that provides 155,520 kbit/s links between customer's sites over radial distances of up to 25 km. This issue contains an editorial update and the clause on terminal equipment approval has been removed.

SIN 293 Issue 2.1 BT LAN Extension Service 622 Service Description
SIN 293 describes the interface characteristics of the BT Local Area Network Extension Service 622 that provides 622,080 kbit/s links between customer's sites over radial distances of up to 25 km.. This issue contains an editorial update and the clause on terminal equipment approval has been removed.


SIN 354 Issue 3.0 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Supplementary Services available on the Analogue Line Interface
SIN 354 describes the technical characteristics of the Supplementary Services available on analogue line lines. In this issue enhancements to the capabilities of UXD 5 exchanges have been incorporated together with a number of service name changes and editorial updates.

SIN 404 Issue 1.1 -BT DataStream Symmetric Service Description and Interface Specification
SIN 404 describes the BT DataStream range of products (both symmetric and asymmetric) which enables a Service Provider to access multiple End-Users via an ATM-based data network. In this issue errors in Table 6 have been corrected and other editorial changes made.

SIN 405 Issue 1.1 -BT IPStream Symmetric Service Description and Interface Specification
SIN 405 describes the BT IPStream range of products (both symmetric and asymmetric) that enables a Service Provider to access multiple End-Users via an IP network. In this issue contact details have been replaced by a link to the SINet Useful Contacts page.

SIN 388 Issue 1.1 -ATM in-span Handover of DSL Delivered Services - Service Description and Interface Specification
SIN 388 describes the BT DSL ATM In-Span Handover (ISH) Service that provides Other Operators with a new point of access to End Users of BT Broadband ATM services. In this issue the SIN has been updated to include an STM-16 interfaces and the choice of 155Mbit/s or 622Mbit/s ATM Ports on the ATM Switch.

SPIN 069 - Launch of Wholesale 1571

SPIN 068 - Wholesale Access Service

SIN 316 Issue 5.0 - Enhanced Digital BT Valuelink® Access - Service Description
This SIN describes the Enhanced Digital BT ValueLink Access service. This up-issue announces the enhancements to the Call Re-presentation and Home Group Divert features, the provision of Call Deflection, amendment of the DDI user options and change of the name of the service from Value Call to ValueLink. Details of all of the changes are given in Annex C.

Published 23/9/03


Withdrawn 30/9/03

SPIN 063 - BT Wholesale Access

Time expired.


Published 16/9/03

SIN 407 Issue 1.2 - BT L-Band Relay Service Description
The BT L-band Relay service provides unidirectional transmission over optical fibre of signals in the frequency range commonly known as ‘L-band’. A single electrical feed of signals contained within the L-band range of frequencies is taken from the signals received from a satellite. This is then split (depending on the number of customer sites served), and fed via an optical modulator, which will then transmit the signals via optical fibre to the customer site. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN.


Published 15/9/03

SIN 332 Issue 1.2 - BT Broadcast Services Audio Broadcast Network Service Description
This Suppliers' Information Note describes the Audio Broadcast service which is an aggregate service based upon the BT MusicLine One and BT MusicLine 2000 services. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN.


SIN 326 Issue 1.2 - BT International Megastream 155 - Service Description
BT International Megastream 155 is an international Synchronous Digital Hierarchy (SDH) point to point leased high speed digital service supporting customer access at 155 520 kbit/s which conforms to ITU-T Recommendation G.707. The up-issue removes the Terminal Equipment Approval Requirements section from the SIN.

SIN 329 Issue 5.8 - BT Broadband IP Products, Service Description
This Suppliers’ Information Note (SIN) provides service description information about BT IPStream Office 500/1000/2000 and BT IPStream Home 500/1000. In this issue the approximate local exchange to End User distance has been increased to 6 km for services previously limited to 5.5 km.

SIN 386 Issue 1.3 - BT IPStream Office & BT IPStream Home Products, Service
Description and Interface Specification
SIN 386 provides service description information about BT IPStream Office 500/1000/2000 and BT IPStream Home 500/1000. In this issue the approximate local exchange to End User distance has been increased to 6 km for services previously limited to 5.5 km.

Published 11/9/03


SIN 204 Issue 1.0 - Access to BT's Callstream Services via 2048kbit/s Interface Using Channel Associated Signalling - Service Description

SIN 211 Issue 1.0 - Mid Call Diversion for use with Callstream - Service Description

SIN 356 Issue 1.1 -BT Public Switched Telephone Network (PSTN): Technical Characteristics Of BT's Type 2 Channel Associated Signalling System (CASS) Interface.

SIN 381 Issue 1.1- Withdrawal of Digital Access to BT’s Callstream Services Via a 2048 kbit/s Interface Using Channel Associated Signalling and Basic Mid Call Diversion for use with BT’s Callstream Services.

Withdrawn 26/9/03

SIN 347 Issue 2.1 - BT DataStream Office & BT DataStream Home (Service Provider) Services Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the launched version of BT DataStream Office and BT DataStream Home services. In this issue an error has been corrected in the first sentence of section 2.2 where "VBR-rt" has now been changed to "VBR-nrt".

Published 10/9/03



SIN 347 Issue 2.0 - BT DataStream Office & BT DataStream Home (Service Provider) Services Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the launched version of BT DataStream Office and BT DataStream Home services, which have undergone trial. In this issue sections 2.1, 2.2, and 3.3 have been amended to clarify that "enhanced" services (Constant Bit Rate and Variable Bit Rate real-time) are restricted to particular Digital Subscriber Line Access Multiplexers in the network, and that End User Accesses of these particular service categories must be supported on Virtual Paths of an equivalent service category.

SIN 243 Issue 4.0 - BT ISDN Services
ISDN International Interworking
The purpose of this Suppliers’ Information Note (SIN) is to provide Customer Premises Equipment (CPE) suppliers and manufacturers with information specific to international interworking between BT’s ISDN services and overseas ISDNs. This issue has been updated to take account of the proposal to release CLI on outgoing international calls and has been editorially updated.

Published 05/9/03


SIN 328 Issue 2.2 - BT ISPnet Service Description
The ISPnet Standard Access service is designed to provide a complete Internet Access Service package for use by Internet Service Providers (ISP), Virtual ISPs and BT’s Supplemental Systems Business (SSB). This document has been edited to reflect that the product is no longer available for new supply (to align with BT Price List). The up-issue also removes the Terminal Equipment Approval Requirements section from the SIN.

SIN 417 Issue 1.0 - Prime GigaBit Ethernet (GbE) Service Description
This Suppliers’ Information Note (SIN) provides information about the BT Prime Gigabit Ethernet (GbE) service. Through use of Ethernet access options (interfaces described in SIN 360), the product provides both a physical access and a logical connection between a set of access ports. Access ports are grouped such that a single ‘hub’ port connects to many ‘spoke’ ports allowing hub to spoke communication

Published 04/9/03


SIN 284 Issue 1.2 - BT RedCARE Service Description & Technical Information
This Suppliers Information Note gives information about the BT RedCARE Service which is provided from Protected Premises over the BT analogue local access network and the BT RedCARE network to an Alarm Receiving Centre (ARC). Issue 1.2 of the SIN describes a 10/100Base Ethernet option for ARC interface to the RedCARE network. The up-issue also removes the Terminal Equipment Approval Requirements section from the SIN, and updates RedCARE Helpdesk telephone numbers.

Published 29/8/03


SIN 329 Issue 5.7 - BT Broadband IP Products Service Description
This Suppliers’ Information Note (SIN) provides service description information about BT IPStream Office 500/1000/2000 and BT IPStream Home 500/1000. In this issue references to SIN 405 for BT IPStream Symmetric have been added and references to "BT IPStream Home 500" has been changed to "BT IPStream Home."

SIN 386 Issue 1.2 - BT IPStream Office & BT IPStream Home Products Service Description and Interface Specification.
SIN 386 has been amended for the introduction of BT IPStream Home 1000 and a note has been added concerning the susceptible of CPE to ADSL signals, post-filtering

Published 18/8/03


SPIN 080 - Fixed Line SMS
The purpose of this Service Provider Industry Notification is to inform the Service Provider community, outline the key elements of the Fixed Line SMS service and give details of where to obtain further information.

Published 15/8/03


SIN 376 Issue 1.0 - BT Wholesale Broadband SHDSL
SIN 376 has been published to replace STIN 376 in preparation for the launch of BT Wholesale's Broadband SHDSL services.

SIN 404 Issue 1.0 - BT DataStream Symmetric
SIN 404 has been published to replace STIN 404 in preparation for the launch of BT DataStream Symmetric. New Virtual Connection packages and reference to STM-4 Customer access links have been added. Changes have been made to the Virtual Path Identifier and Virtual Connection Identifier ranges.

SIN 405 Issue 1.0 - BT IPStream Symmetric
SIN 405 has been published to replace STIN 405 in preparation for the launch of BT IPStream Symmetric. Clarification on traffic shaping has been added to section 3.3.2.4 and the clause on approval requirements has been removed.

SPIN 078 - BT DataStream Symmetric
This SPIN outlines BT's plans for the introduction of BT DataStream Symmetric, an additional product in BT's DataStream Portfolio based upon SHDSL technology. SPIN 078 replaces SPIN 072, issued in February 2003, and contains additional and amended information.

SPIN 079 - BT IPStream Symmetric
The purpose of this information note is to outline the introduction of BT IPStream Symmetric, an additional product in BT’s IPStream Portfolio that is based upon SHDSL technology . This information note replaces SPIN 073, issued in February 2003, and contains additional and amended information relating to the launch of this product.

Published 11/8/03

SIN 346 Issue 2.3 - BT ADSL Interface Description
An Operations and Maintenance section has been added recommending that end-user CPE support F5 loopback. The clause on CPE approval requirements has been removed and Figure 6 amended


SPIN 073 BT IPStream Symmetric

SIN 385, Issue 2.2, 'IP Clear - Service Description'.
This Suppliers’ Information Note (SIN) describes BT’s IP Clear service, which utilises MPLS technology to provide IP Virtual Private Network capability. This update reflects DiffServ Code Point (DSCP) Class of Service (new Section 3.6), support of this CoS model is intended to be introduced later this year.

Published 05/8/03


SPIN 072 BT DataStream Symmetric

Withdrawn and replaced by SPIN 079

Withdrawn and replaced by SPIN 078

Withdrawn 13/8/03


Published 31/7/03

SIN 413 Issue 1.1 - Fixed Line SMS Service, Service Description and Interface Specification
This SIN provides information about the launch of BT's Fixed Line Short Message Service. This will provide users of fixed line telephones with a messaging service similar to that currently available to mobile telephone users. Issue 1.1 further describes the SMS Voice Mailbox Interface in Section 4, provides further detail relating to Protocol 1 in Section 3.5.1, and clarifies information relating to presentation numbers in Section 2.1. New Section 3.6 has been added to the SIN to describe Terminal Registration.

SIN 360 Issue 2.0 - Ethernet Customer Interfaces - Interface Characteristics
SIN 360 describes the characteristics of Ethernet Interfaces used in the BT Network . This up-issue increases the scope of the document to include 10/100 Mbit/s Ethernet interfaces.

SIN 349 Issue 1.4 - BT Metallic Path Facility Interface Description
This Suppliers Information Note (SIN) describes the technical characteristics of the BT Metallic Path Facility (MPF). This up-issue edits Section 5.1 to give additional guidance when testing the parameters of an MPF.


SIN 295 Issue 1.3 - BT Basic X.25 Direct Service Description
This document describes the BT Basic X25 Direct Service. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN, and amends the contact detail contained in Section 2 of the document.

SIN 287 Issue 1.3 - BT Call Mapping Service - Service Description
This Suppliers' Information Note (SIN) describes the BT Call Mapping Service that is available to third party Service Providers. The service enables third party Service Providers to offer a Voice Messaging Service to BT fixed single line customers. This up-issue removes the Terminal Equipment Approval Requirements section from the SIN, and amends the contact detail contained in Section 5 of the document.

Published 22/7/03


SPIN 064 - ADSL Exchange Activate

Time Expired

Withdrawn 1/8/03


SIN 347 Issue 1.9 - BT DataStream Office & BT DataStream Home (Service Provider) Services Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the launched version of BT DataStream Office and BT DataStream Home services, which have undergone trial. In this issue Cell Delay Variation Tolerance values have been added to the Virtual Path Options Table for STM-4 Access, and text has been added to clarify that the Header Error Check field is not acted upon.

Published 21/7/03


SIN 374 Issue 1.1 - L2TP Interface For IPStream Interface Characteristics
This Suppliers Information Notification document describes the characteristics of the L2TP Interface. In this issue more detail has been added to describe the way the service supports PPPoE (Point-to-Point Protocol over Ethernet) and the section on terminal equipment approval requirements has been removed.

Published 11/7/03


SIN 377 Issue 1.5 - BT Hosted VoIP Services Service Description
This Suppliers Information Notification document provides information for the BT Hosted VoIP services, BT Multimedia VoIP and BT VoIP Port. This update includes the introduction of MGCP (Media Gateway Control Protocol) and ITU-T T.38 support.

Published 3/7/03


SIN 337 Issue 2.2 - BT Mega Stream 622 BT MegaStream Aggregate (STM4) Service Description.
This document describes the BT MegaStream 622 and MegaStream Aggregate (STM4) services and provides technical information for terminal equipment manufacturers and suppliers. This update removes the Terminal Equipment Approval Requirements section from the document.

SIN 383 Issue 1.4 - BT WebPort, Service Description.
BT WebPort services are designed to provide Internet Access for use by Independent Service Providers (ISP), Virtual ISPs and BT. In this updated issue of the SIN an L2TP tunnel passthrough option has been added and the terminal equipment approval section has been removed.

Published 27/6/03


SIN 56 Issue 1.2 - Message Switching Computers connected to SPC Telex Exchanges, Technical Characteristics of the Interface.
This document details the technical characteristics and line signalling protocols to enable a Message Switching Computer (MSC) to work in conjunction with a Stored Program Control telex exchange using Single Channel Voice Frequency (SCVF) transmission. This update removes the Terminal Equipment Approval Requirements section from the document.

Published 26/6/03


SIN 344, Issue 2.0, 'BT Analogue Multipoint Service Repeal of Withdrawal Notification'
This SIN notified BT's plan for the continuation of the Analogue Multipoint Service. The SIN also drew attention to the limited availability of Multipoint apparatus which had been causing problems in fulfilling new Multipoint circuit provisions. BT is pleased to advise that the short fall in apparatus has been overcome, and as such the content of SIN 344 no longer appropriate to be published. Interface and technical characteristics relating to the Analogue Multipoint Service is available in SIN 355 'BT Analogue Private Ccts: Technical Characteristics of 2-Wire & 4-Wire Analogue Interfaces'.

Withdrawn 24/6/03


SIN 413 Issue 1.0 - Fixed Line SMS Service, Service Description and Interface Specification
This SIN provides information about the launch of BT's Fixed Line Short Message Service. This will provide users of fixed line telephones with a messaging service similar to that currently available to mobile telephone users.

Published 23/6/03


SIN 390 Issue 1.2 - BT’s managed IP VPN services, MetroVPN and VPN EquIP Service Description.
The SIN provides information about BT’s managed IP VPN services, metroVPN and VPN EquIP. This up-issue corrects Section 3.7 by removing the word "Dual" from the section title.

Published 20/6/03


SIN 345 Issue 1.2 - BT Channel Extension Service 1000
The main changes in this issue of SIN 345 are that the clause on terminal approval requirements has been removed, distances from NTE to CPE have been clarified for each multimode fibre type, the jitter control description has been clarified and the “Link failure” text in clause 3 has been replaced by the addition of a clause 3.3 for “Network Link Break.

Published 16/6/03


SIN 264 Issue 6.5 - BT CellStream Service Description
This SIN describes the BT CellStream service. The service offers both PVC connectivity between two ATM end-points; as well as connectivity to BT's MPLS network offering IP VPN capability. This update adds information which clarifies the Class of Service (CoS) support of IP Enabled CellStream PVCs. The up-issue also removes the Terminal Equipment Approval Requirements section from the SIN.

Published 12/6/03


SIN 223 Issue 3.1 - BT MegaStream 1, BT MegaStream 2, & MegaStream 8 Service Description
SIN 223 Issue 3.1 describes the BT MegaStream 1, BT MegaStream 2, & BT MegaStream 8 services, and provides technical information for terminal equipment manufacturers, suppliers and developers. This revision of the SIN confirms introduction of the MegaStream 1 Aggregate option, and informs that MegaStream 8 is not available for new supply (to align with BT Price List 26.9.2001). The up-issue also removes the Terminal Equipment Approval Requirements section from the SIN.

Published 11/6/03


Published 10/6/03

SIN 291 Issue 2.4 - BT FrameStream Service Description
This SIN describes the BT FrameStream service, which uses Frame Relay technology. The service offers both PVC connectivity between two FrameStream VC end-points; as well as connectivity to BT's MPLS network offering IP VPN capability. This update reflects the introduction (scheduled for October 2003) of Dynamic Resilience through Border Gateway Protocol (BGP) enhanced service reliability option. Information has been added to clarify the Class of Service (CoS) support of IP Enabled FrameStream PVCs. The up-issue also removes the Terminal Equipment Approval Requirements section from the SIN.

SIN 396 Issue 2.1 - BT Dense Wave Division Multiplex Wavelength Services, Service Description

The SIN has been re-issued to correct the History section for Issue 2.0, and for editorial changes.


SIN 396 Issue 2.0 - BT Dense Wave Division Multiplex Wavelength Services, Service Description
In this issue the title has been changed from "BT Wavestream Connect National and Wavestream Metro" to "BT Dense Wave Division Multiplex Wavelength Services". The SIN has been re-written in a more generic form. A 2G Fibre Channel interface and a 2.5 Gbit/s "Transparent Interface" have been added. The Digital Video (270Mbit/s) DVB-ASI interface has been removed.

Published 9/6/03


SPIN 055 - Digital Calls and Access - Launch Prices, Terms and Conditions

Time expired.

Withdrawn 11/6/03


Published 6/6/03

SIN 349 Issue 1.3 - BT Metallic Path Facility Interface Description
This issue contains editorial changes. The Approval Requirements statement has been removed and references to take account of publication of Issue 3 of BT MPF Specification have been updated.


SIN 302 Issue 2.0 - BT Internet Protocol Transport Services Service Description
In this issue the following interfaces have been added to the SIN: X.21 (Frame Relay encapsulation), E1 G.703/G.704 (Frame Relay encapsulation), E3 G.703 (ATM encapsulation) and STM-1 (ATM encapsulation).

SIN 133 Issue 2.1 - The BT Cardway Service
The Format of the SIN has been updated and the section on Terminal Equipment Approvals has been removed. The interface to the “Cardway Delivery Connection” is now defined by reference to SIN 57

Published 5/6/03


SIN 333 Issue 1.2 - SDH Customer Interfaces At the STM-N level (where N=1,4,16), Interface Characteristics
This SIN describes the characteristics of SDH customer interfaces to the BT Network at STM-N level (where N=1,4,16) to support VC-12, VC-3 and other VC-4 payloads (e.g. 140Mbit/s ATM, IP). The up-issue to 1.2 replaces reference to ITU-T Recommendation G.958
(withdrawn by ITU-T) with reference to ITU-T Recommendations G.783 & G.798 (the content of G.958 is contained within these recommendations). This up-issue also removes the Terminal Equipment Approval Requirements section from the SIN.

Published 04/6/03

Withdrawn 4/6/03

SIN 395, Issue 1.0, 'MacroNet High Speed MPLS- Service Description'
The content of the publication, describing GigaBit Ethernet interface to the IP VPN service hosted on BT's Multi-Protocol Label Switching (MPLS) platform, has recently been rationalised into SIN 385 'IP Clear - Service Description'. SIN 385 Issue 2.1 (published 7 May 2003) declares the full range of Ethernet, DSL, and Leased Line access options to BT's IP VPN service.


Published 02/6/03

SPIN 54 Voice Messaging Outpayment (VMO)

SPIN 041 BT Broadband Services: Overview of the System-System Interface for Broadband Ordering

SPIN 058 Voice Messaging Outpayment (VMO) Process

SIN 347 Issue 1.8 - BT DataStream Office & BT DataStream Home (Service Provider) Services - Service Description And Interface Specification
SIN 347 has been updated to clarify the Virtual Channel Identifier and Virtual Path Identifier address ranges.

SPIN 077 - BT Wholesale ISDN30 Product

Following a successful trial, BT Wholesale is planning to launch the Wholesale ISDN30 Product, on 1st July 2003. The purpose of this Service Provider Industry Notification (SPIN) is to outline the key elements of the product offering and where to obtain further information.


Withdrawn 6/6/03

SPIN 060 BT Central Plus Launch

SPIN 061 BT IPStream Satellite Trial

Time expired.


Published 28/5/03

SIN 414, Issue 1.0, 'BT RedCARE Secure IP - Service Description'.
This Suppliers’ Information Note (SIN) describes the BT RedCARE Secure IP service. Encrypted signalling is transported across customer WAN topology and the BT RedCARE network using Internet Protocol (IP) transactions, thus providing a highly secure alarm-signalling network solution. The new service is due to be launched in September 2003.


SIN 277 Issue 3.4 - Impact on Terminal Equipment of Changes to the Dialled Digit Numbering in the Public PSTN and ISDN - Technical Information For Supplier's
This SIN raises awareness of the potential changes to the maximum dialled digit number length and the resulting potential impact on CPE. In this issue Section 3.3 on access to emergency services has been added.

Published 23/5/03


SIN 260, Issue 1.3, 'BT International MegaStream 34 - Service Description'.
This Suppliers' Information Note (SIN) describes the BT International MegaStream 34 Service. The BT International MegaStream 34 Service provides an international high capacity digital service conforming to European Standards ETS 300 686 and ETS 300 687 operating at 34.368Mbit/s. This update removes the Terminal Equipment Approval Requirements section from the document.

SIN 246, Issue 1.2, 'BT MegaStream 140 - Service Description'.
This Suppliers' Information Note (SIN) describes the BT MegaStream 140 Service. BT MegaStream 140 is an inland unstructured point-to-point leased high speed digital service conforming to European Standards ETS 300 686 and ETS 300 688 operating at 139 264 kbit/s. This update removes the Terminal Equipment Approval Requirements section from the document.

SIN 289, Issue 2.3, 'BT MegaStream 155 & BT MegaStream Aggregate - Service Description'
This Suppliers' Information Note (SIN) describes the BT MegaStream 155 and MegaStream Aggregate services. BT MegaStream 155 is an inland Synchronous Digital Hierarchy (SDH) point to point or aggregate (MegaStream Aggregate), leased high speed digital service supporting customer access at 155 520 kbit/s which conforms to ITU-T Recommendation G.707. This update removes the Terminal Equipment Approval Requirements section from the document.

SIN 292, Issue 1.2, 'BT National MegaStream 45 - Service Description'
This Suppliers' Information Note (SIN) describes the BT National MegaStream 45 Service. BT National MegaStream 45 is an inland unstructured point to point leased high speed digital service operating at 44.736Mbit/s. The Service is presented to the customer via an ITU-T Recommendation G.703 interface using the Bipolar with Three-Zero Substitution (B3ZS) line code. This update removes the Terminal Equipment Approval Requirements section from the document.

Published 14/5/03


SIN 390Issue 1.1 - BT’s managed IP VPN services, MetroVPN and VPN EquIP Service Description.
The SIN provides information about BT’s managed IP VPN services, metroVPN and VPN EquIP. An ADSL access option has been added and the SIN has been updated with information to clarify the position regarding access resilience and disaster recovery.

SIN 385Issue 2.1 - BT IP Clear Service Description.
This Suppliers’ Information Note (SIN) describes BT’s IP Clear service, which utilises MPLS technology to provide IP Virtual Private Network capability. This update introduces Ethernet and DSL access options, modifies FRF.12 fragment sizes for IP Clear Flex, and removes the Terminal Equipment Approval Requirements section from the document.

Published 7/5/03


SPIN 076 - BT Wholesale Calls (Line Independent) Product.
Wholesale Calls (Line Independent) is a new Service Provider product, where BT supplies a calls only telephony service to Service Providers for them, in turn, to offer a service to their End Users.

Published 1/5/03

SIN 347 Issue 1.7 - BT DataStream Office & BT DataStream Home (Service Provider) Services, Service Description And Interface Specification.
A new STM-4 (VC4-4c) customer interface presentation and In-Span MSIP (Multi-Service Intranet Platform) switch connection option has been added. The clause on Terminal Equipment Approval Requirements has been deleted.

Published 25/4/03


SIN 225 Issue 3.1 - BT ISDNconnect Service Description.
The BT ISDNconnect Service provides packet mode interconnection of a customer (who may typically be a Value Added Service Supplier or a packet switched data network operator) to its users by means of Permanent Logical Links (PLL). In this issue the terminal approval requirements clause has been removed and general editorial changes made.

SIN 261 Issue 5.2 - BT ISDN 2e and ISDN 30e Services using full ETSI Call Control - Service Description.
This SIN describes the BT ISDN 2e and ISDN 30e ETSI services. In this issue the terminal approval requirements clause has been removed and general editorial changes made.

Published 24/4/03


SIN 277 Issue 3.3 - Impact on Terminal Equipment of Changes to the Dialled Digit Numbering in the Public PSTN and ISDN - Technical Information For Suppliers
This SIN raises awareness of the potential changes to the maximum dialled digit number length
and the resulting potential impact on CPE. In this issue the terminal approval requirements
clause has been removed and general editorial changes made.

SIN 232 Issue 4.4 - BT ISDN 30 (I.421) - Service Service Description
This Suppliers Information Note (SIN) describes the BT ISDN30 (I.421) Service supported on the limited ETSI call control platform, (CCITT Recommendation I.421 User-Network Interface). In this issue the terminal approval requirements clause has been removed and general editorial changes made.

Published 23/4/03


SIN 222 Issue 2.3 - BT ISDN 30 (DASS) - Service Description
This Suppliers Information Note describes the BT ISDN 30 (DASS) service, based on DASS 2 (Digital Access Signalling System No. 2). In this issue the terminal approval requirements clause has been removed and general editorial changes made.

Published 17/04/03


Published 16/4/03

SIN 171 Issue 8.4 - BT ISDN 2(Using limited ETSI Call Control) - Service Description
This Suppliers Information Note (SIN) describes the "BT ISDN 2" service (I.420 Basic User-Network Interface) which is supported on the limited ETSI call control platform. In this issue the terminal approval requirements clause has been removed and general editorial changes made.

SIN 118 Issue 4.3 - BT LAN Extension Services 1, 2, & 10 (LES 1, 2, & 10) - Service Description.
Notice is now given that the Link loss Forwarding feature will be enabled by default on new LES 10 installations, the terminal approval requirements clause has been removed and information added about a 16 Slot NTE chassis option for larger installations.

SIN 311 Issue 2.2 - BT LAN Extension Service 100 - Service Description.
“Enhanced” has been removed from the name of this service. Recommendation on traffic loading for half duplex and VOIP applications have been added. NTE chassis options and power figures have been amended. Notice is now given that the Link loss Forwarding feature will be enabled by default on new installations. Route to radial distances have been clarified. The terminal approval requirements clause has been removed and general editorial changes made.


SIN 251, Issue 1.3, 'Private Circuit Services Evolving Network Modernisation And Its Effect On Analogue Private Circuits'.
This Suppliers' Information Note (SIN) establishes the current status of, and BT's current thinking for, the core and access networks and as a consequence the future availability of BT’s d.c. based private circuit products. This update to the SIN clarifies BT's Baseband private circuit policy for the 0207 dial code area.

SIN 352, Issue 2.1, 'BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Multi-Line Analogue Line Interface'.
This Suppliers' Information Note (SIN) specifies the technical characteristics at the Network Termination Point (NTP) of the multi-line analogue interface of the Public Switched Telephone Network (PSTN) provided by BT. This update to the SIN reflects publication of the ANFP Issue 2 and the introduction of the 'extra-short' line category; some minor edits to text and reference numbers has also taken place.

Published 09/04/03


SIN 139 Issue 2.0 - 2048 kbit/s Interface to the British Telecom Network Providing Access to International 1544 kbit/s Networks - Service Description and Interface Specification.

SIN 353, Issue 2.1, 'BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Direct Dialling In (DDI) Analogue Line Interface
This Suppliers' Information Note (SIN) specifies those technical characteristics of a direct dialling in (DDI) analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT. This update to the SIN reflects publication of the ANFP Issue 2 and the introduction of the 'extra-short' line category; some minor edits to text and reference numbers has also taken place.


A major editorial update with the SIN being made available in PDF format for the first time. The technical content from referenced BT documents are now incorporated in the SIN and references to terminal approval requirements have been removed.

SIN 386 Issue 1.1 - BT IPStream Office & BT IPStream Home Products Service Description and Interface Specification
This Suppliers’ Information Note (SIN) provides service description information about BT IPStream Office 500/1000/2000 and BT IPStream Home 500, which form part of BT’s Internet Protocol (IP) Transport Services portfolio (SIN 302). This issue contains the addition of a description the PPPoE support within the service.

Published 08/04/03


SIN 275 Issue 5.0 - BT Highway, BT's Lowband Digital Access Service, Service Description
For the Highway USB port, this issue adds dynamic channel switching and updates the list of supported OSs.

For the Highway USB port, this issue adds dynamic channel switching and updates the list of supported OSs.

Published 04/04/03



STIN 412 Issue 1.0 - 622Mb Edgeless L2TP BT Central Product For BT IPStream- Interface Characteristics
This STIN describes the 622Mb Edgeless L2TP BT Central Product that is a variant of the standard BT Central.

SIN 329 Issue 5.6 - BT Broadband IP Products - Interface Specification + Addendum
This issue has an Addendum added for the 622Mb BT Central Product, more detail on PPPoE and editorial changes.

Published 03/04/03



STIN 404 Issue 1.2 - BT DataStream Symmetric Service Description and Interface Specification
In this issue Tables 3,4,5,& 6 have been amended to show new Sustained Cell Rate & Maximum Burst Size values for some Variable Bit Rate services.

Published 02/04/03


SIN 373 Issue 2.2 - BT WaveStream Connect™ Service Description
This publication has added the provision of a 2G Fibre Channel (2.125Gbit/s) option to the selection of interfaces available. This interface is a higher bandwidth version of the existing Fibre Channel (1.06Gbit/s). Section 4 has been updated to allow for situations where the customer wishes to provide their own DC power supply and section 6 on approvals has been deleted.

Published 01/04/03

Published 28/03/03

SIN 347 Issue 1.6 - BT DataStream Office & BT DataStream Home (Service Provider) Services Service Description And Interface Specification
SIN 347 Issue 1.6 incorporates SIN411 enhanced BT DataStream Home & Office service plus editorial changes.


SIN 351 Issue 4.1 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Single Analogue Line Interface.
This Suppliers' Information Note (SIN) specifies those technical characteristics of a single analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT and known commonly as a Direct Exchange Line (DEL), without Supplementary Services, delivered to a customer at the Network Termination Point (NTP). This update to the SIN reflects publication of the ANFP Issue 2 and the introduction of the 'extra-short' line category; some minor edits to text and reference numbers has also taken place.

SIN 393 Issue 1.0 - BT Gain - Service Description
This SIN describes the BT Gain service which will enable organisations to intelligently route calls delivered from the BT network to suitably skilled call centre agents.

Published 24/03/03


SPIN 075 - Broadband 60db Extended Reach
This SPIN addresses BT’s proposal to extend the reach of BT’s Wholesale Broadband ‘500 kbps’ BT IPStream and BT Datastream products. This will allow a greater proportion of the UK population to receive a Broadband service. BT will run internal technical tests from March 2003 to June 2003; and replace the 55dB limit with the new 60db threshold limit at the end of June subject to successful internal tests.

Published 20/03/03



SPIN 074 - BT Virtual ISP

SIN 278 Issue 1.3 - Enhanced Information Service for Emergency Calls - Service Description'.
Thispublication provides information about the BT Enhanced Information Service for Emergency Calls (EISEC), and the signalling mechanism to be used between the customer premise equipment and the BT network to access an EISEC-DB (data base for Emergency Authority access). The up-issue of this SIN is to primarily support an enhancement to EISEC to allow location information to be passed for emergency calls from mobile phones, this enhancement is scheduled to be introduced in July 2003.

Published 13/03/03


This product will give UK and non-UK Customers a low-cost, low-risk way to offer ISP services to UK End-Users.

Published 11/03/03

SIN 279 Issue 1.2 BT Universal Freefone Service

SIN time expired.

Withdrawn 19/3/03


SIN 367 Issue 2.1 - Characteristics of the BT Network Electrical Safety and EMC.
This Suppliers' Information Note (SIN) describes the electrical safety and EMC characteristics of the interfaces of BT’s fixed telecommunications network as presented to customers at the Network Termination Point (NTP). Issue 2.1 contains editorial changes.

SIN 355, Issue 1.3, 'BT Analogue Private Circuits: Technical Characteristics Of 2-Wire And 4-Wire Analogue Interfaces'.
This Suppliers' Information Note (SIN) specifies the technical characteristics of 2-wire and 4-wire analogue interfaces of Private Circuits provided by BT. The update to the SIN reflects the following - up-issue of the ANFP to Issue 2 and the introduction of the 'extra short' line category, the maximum number of spurs changed from 12 to 8 on newly provided Multipoint configurations (commences 8th June 2003), a change to the private circuit helpdesk phone number, and a general editorial review of text and document layout.

SIN 338 Issue 1.4 - BT LAN Extension Service 1000 - Service Description
This publication describes the BT Local Area Network (LAN) Extension Service 1000 (LES 1000). This up-issue reinstates the LX CPE to NTE cable distance which existed prior to the January 2003 edit. The up-issue also includes the addition of a network link loss section, a correction to the NTE power consumption, and the removal of the Approval Requirements section (this information is now available via SINet Useful Contacts).

Published 07/03/03


SIN 227 Issue 3.3 - CDS Calling Line Identification Service - Service Description
This Suppliers Information Note (SIN) has been prepared to give technical information about the BT CDSÔ * Calling Line Identification (CLI) Service which is provided over the analogue BT local access network. Issue 3.3 contains editorial changes and reference to SIN 242 has been added.

Published 03/03/03


SIN 347 Issue 1.5 - BT DataStream Office & BT DataStream Home (Service Provider)
Services - Service Description And Interface Specification
SIN 347 Issue 1.5 adds rate adaptive functionality to the DataStream Office 500 end user product.

Published 27/02/03


SIN 375, Issue 1.1 - Terminal Equipment Spectral Power Requirements.
This Suppliers' Information Note relates to the requirement for equipment connected to all metallic twisted pairs of the BT access network to comply with the "Specification of the Access Network Frequency Plan (ANFP) applicable to transmission systems used on the BT Access Network" published by OFTEL. The update to the SIN reflects up-issue of the ANFP to Issue 2 and the introduction of the 'extra short' line category.

Published 26/02/03


STIN 405 Issue 1.1 - BT IPStream Symmetric Service Description and Interface Specification
STIN 405 has been updated with minor editorial changes and reference to the ANFP at issue 2.

STIN 404 Issue 1.1 - BT DataStream Symmetric Service Description and Interface Specification
STIN 404 has been updated with minor editorial changes and reference to the ANFP at issue 2.

STIN 376 Issue 1.1 - BT Wholesale Broadband SHDSL Interface Description
STIN 376 has been updated to better reflect the implementation of the trial at the customer interface

SPIN 073 - BT IPStream Symmetric
This information note replaces the SPIN 066 issued at September 2002 and contains additional and amended information relating to the trial of this product.

SPIN 072 - BT DataStream Symmetric
This information note replaces the SPIN 065 BT DataStream Symmetric, issued at September 2002 and contains additional and amended information relating to the trial of this product.

Published 11/02/03


SIN 306 Issue 6 - BT VideoStream (Service Provider) Services - Service Description and Interface Specification.
BT intends to cease new supply of BT VideoStream (Service Provider) Services described in SIN 306, with effect from 27/01/2003 . Following this BT anticipates that the service will be fully withdrawn from service no later than 31/01/2004

Published 29/01/03


SPIN 066 BT IPStream Symmetric (Replaced by SPIN 073)

SPIN 065 BT DataStream Symmetric(Replaced by SPIN 072)

Withdrawn 11/2/03


SIN 159 Issue 1 - ETAN (EFTPOS Term'l Access N/W) - Service Description

Withdrawn 5/2/02


SPIN 071- BT Wholesale ISDN30 Service Provider Product
SPIN 071 replaces SPIN 070 advising of some corrections to the terms.
This SPIN advises of the trial, scheduled to commence from 3rd March 2003, of a BT Wholesale ISDN30 Service Provider Product. Potential triallists are advised of the opportunity to apply to participate in this trial. Under this new trial, BT will offer an ISDN Primary Rate service to Service Providers, which will in turn enable Service Providers to offer their own branded digital voice and data service to end users.

Published 21/01/03


SPIN 070- BT Wholesale ISDN30 Service Provider Product

Withdrawn 21/01/03


SIN 373, Issue 2.1 - BT WaveStream ConnectTM - Service Description
This Suppliers Information Note (SIN) describes the BT WaveStream Connect service utilising dense wave division multiplexing (DWDM). Issue 2.0 added to the service the customer option of an STM16 2.5Gbit/s customer interface. Issue 2.1 has non technical editorial alterations.

Published 20/01/03


SIN 338, Issue 1.3 - BT LAN Extension Service 1000 - Service Description.
This publication describes the BT Local Area Network (LAN) Extension Service 1000 (LES 1000). This up-issue has reviewed the technical content of the document, key amendments are a correction to remove reference to an NTE internal switch for link loss propagation, and clarification of cable distances between CPE and NTE.

Published 17/01/03


SIN 377 Issue 1.4 - Ignite Multi Media VoIP Service Service Description
This BT Ignite Multimedia VoIP service utilises the customers own data network and manages call control to deliver real-time voice over IP (VoIP) and multimedia services to the desktop. This update provides new contact details for Cisco Documentation.

Published 16/01/03


SIN 277 Issue 3.2 - Impact on Terminal Equipment of Changes to the Dialled Digit Numbering in the Public PSTN and ISDN - Technical Information for Suppliers.
This SIN raises awareness of the potential changes to the maximum dialled digit number length and the resulting potential impact on CPE. This Issue has been editorially updated.

Published 15/01/03


SIN 254 Issue 2.2 - BT KiloStream Aggregate Interface Service Description
This publication describes the BT KiloStream Aggregate service using a 2.048Mbit/s ITU-T G.703 interface. The service supports Aggregate to Single 64kbit/s X.21, Aggregate to n x 64kbit/s (X.21 and G.703), and Aggregate to Aggregate. The up-issue of SIN 254 adds the description of the Aggregate to n x 64kbit/s service which has previously been declared in SIN 268. The withdrawal of SIN 268 coincides with this up-issue of SIN 254.

Published 14/01/03


SIN 268, 'n x 64 kbit/s [KiloStream N (Voice and Data)] via a KiloStream Aggregate Interface - Service Description' - WITHDRAWAL
Detail of the n x 64kbit/s service via a KiloStream Aggregate Interface is now contained in SIN 254 'BT KiloStream Aggregate - Service Description'.

Withdrawn 14/01/03


SIN 349 Issue 1.2 -BT Metallic Path Facility Interface Description
This issue contains editorial changes to take account of publication of Issue2 of BT ANFP, Issue 2 of BT MPF Specification, and publication of IEC 60950-1.

Published 13/01/03


SPIN 070- BT Wholesale ISDN30 Service Provider Product
This SPIN advises of the trial, scheduled to commence from 3rd March 2003, of a BT Wholesale ISDN30 Service Provider Product. Potential triallists are advised of the opportunity to apply to participate in this trial. Under this new trial, BT will offer an ISDN Primary Rate service to Service Providers, which will in turn enable Service Providers to offer their own branded digital voice and data service to end users.

Published 08/01/03


SIN 397 Issue 1.1 - BT IPStream Satellite Service Description
Trial now completed, document withdrawn.

Withdrawn 08/01/03


SIN 373 Issue 2.0 - BT WaveStream Connect™ Service Description
This Suppliers Information Note (SIN) describes the BT WaveStream Connect service utilising dense wave division multiplexing (DWDM). This issue adds to the service the customer option of an STM16 2.5Gbit/s customer interface.

Published 22/12/02


SIN 410 Issue 1.0 - BT WebPort Complete Service Description
This SIN describes the BT WebPort Complete service, which is part of the BT IP Services Transport Portfolio. The service is offered to Service Providers and other customers requiring provision of End User access to the Internet using dial access and optionally End User access via the BT Broadband service. Additionally the service optionally supports connection of the Customer’s own network to the Internet. It uses existing interfaces from SINs:- 383 BT WebPort; 329 BT Broadband IP Products and 302 BT Internet Protocol Transport Services.

Published 17/12/02


SIN 383 Issue 1.3 - BT WebPort Service Description
This publication describes the use of two channel MP (Multilink Protocol) when ordered as part of the Customers WebPort service. This enables both channels from an End User to be bundled together as part of the PPP Multilink Protocol (MP) into a single session.

SIN 158 Issue 3.1 - BT KiloStream n x 64kbit/s Service Description
This publication describes the n x 64kbit/s KiloStream service using ITU-T G.703, and X.21 interface options. Issue 3.1 caters for document format and editorial content changes.

Published 05/12/02


SIN411 Issue 1.0 - DataStream Office & BT DataStream Home End-to-end ATM service category enhancements Service Description And Interface Specification
This SIN describes changes to BT DataStream Office and BT DataStream Home service, where the service is being enhanced to support ATM service categories of constant bit rate (CBR) and variable bit rate (VBR-rt) on an end-to-end basis.

Published 04/12/02


Published 25/11/02

SIN 233 Issue 1.1 - BT Fibre Distributed Data Interface Interconnection Services (FIS) 1 & 2 - Service Description

SIN 234 Issue 1.1 - BT Fibre Distributed Data Interconnection Services (FIS) 3 & 4 - Service Description


SIN 242 Issue 2.2 - CDSÔ Calling Line Identification Service -
Part 1 Idle State, Down Stream Signalling, Part 2 Loop State Signalling Terminal Equipment Requirements
This document describes requirements for Terminal Equipment (TE) intended to operate with BT's CDSÔ Calling Line Identification (CLI) Service. This service is described in Suppliers' Information Note 227. This issue contains editorial changes.


Format updated and notification given that the services are not available for new supply.

Published 13/11/02

SIN 357 Issue 4.0 - BT FeatureNet Service Ô * : Technical Characteristics Of The Interfaces
Addition of 1471 Erasure and FeatureNet Manager. Calling Line Identification roll-out updated. FeatureNet IP removed. TCP-IP access to the CompuCALL facility added following trial notification in the previous issue.

SIN 408 Issue 1.0 - BT Openzone Service Description
This SIN describes the BT Openzone service which provides wireless Internet access for individual nomadic computer users, through a network of local islands of wireless connectivity known as hotspots. The service utilises a wireless LAN radio interface conforming to specification IEEE 802.11b generally known as a WiFi interface.

Published 12/11/02

SIN 249 Issue 1.1 -Call Arrival Indication From Particular Supplementary Services (Distinctive Ringing) Service Description
SIN 249 has been withdrawn and the contents are now published in SIN 351 Annex A.

Withdrawn 12/11/02


SIN 118 Issue 4.2 - BT LAN EXTENSION SERVICES 1, 2 & 10 (LES 1, 2 & 10) Service Description
SIN 118 describes the BT Local Area Network Extension Services 1, 2 & 10 and their customer interfaces. The Radial and Route distances for LES 2 have been amended and the power input figures for the LES 2 & LES 10 power supplies have been updated

Published 8/11/02


SPIN 069 - Launch of Wholesale 1571
This SPIN announces the addition of "Business PSTN Single Line" to the BT Wholesale Access service. BT will launch this business PSTN single line offering on 1 December 2002.

Published 5/11/02


STIN 406 Issue 1.0 - BT TalkStream Technology Trial
The purpose of this STIN is to describe the BT voice over ATM (VoATM) trial service, using ATM adaptation layer 2 (AAL2), that will provide Other Licensed Operators (OLO) (Customers) with the ability to provide their customers (End Users) with a voice over SDSL service

SIN 57 Issue 2.0 - BT KiloStream X.21 Interface, Service Description
This document describes the BT KiloStream Inland Service using the X.21 and X.21 bis (V.24 & V.35) interfaces. Issue 2.0 rationalises the content of previous paper format issues of SIN57, 58 & 59 into one e-document.

SIN 148 Issue 1.1 - BT Racenet, Service Description
This Suppliers' Information Note gives details of the BT Racenet service. The service is a uni-directional distribution system carrying vision, audio, and data channels. This up-issue converts the former paper declaration to the current standard SIN format.

Published 01/11/02

SIN 58 Issue 1.0 - KiloStream X21 bis (2400 to 9600 bit/s) Service
SIN 59 Issue 1.0 - KiloStream X21 bis (48k) Service


SIN 150 Issue 1.1 - BT International KiloStream X.21 bis (56kbit/s), Service Description
This document describes the BT KiloStream International Service using the X.21 bis (V35) interface. This up-issue converts the former paper declaration to the current standard SIN format.

Withdrawn 01/11/02


SINs 58 and 59 have been withdrawn and their content has now been rationalised in the up-issue of SIN 57.

Published 30/10/02

STIN 398 Issue 1.0 - Microconnect Distributed Antennas, Service Description.
STIN 398 describes a trial of the BT Microconnect Distributed Antennas service. This service provides an area coverage proposition intended to form a transmission link in the RF access network of Operators in the mobile and radio sector.


SIN 306 Issue 5.0 - BT Video Stream (Service Provider) Services - Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the BT VideoStream Service and provides information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs), Corporate Businesses, Customer Premises Equipment (CPE) manufacturers and developers. This issue has been amended to describe VideoStream only due to the withdrawal of DataStream S.

SIN 407 Issue 1.1 - BT L-Band Relay Service Description
The BT L-band Relay service provides unidirectional transmission over optical fibre of signals in the frequency range commonly known as ‘L-band’. A single electrical feed of signals contained within the L-band range of frequencies is taken from the signals received from a satellite. This is then split (depending on the number of customer sites served), and fed via an optical modulator, which will then transmit the signals via optical fibre to the customer site. In this issue Fig 1 has been updated, added network management text to section 2, and corrected “L-band” to “L-Band”

Published 18/10/02


SIN 329 Issue 5.5 - BT Broadband IP Products - Interface Specification
Suppliers’ Information Note (SIN) 329 describes the interfaces presented used to support BTs IP products. It has been updated editorially, a list of all the changes are given in Annex A of the SIN.

Published 14//10/02


SIN 351 Issue 4.0 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Single Analogue Line Interface
This Suppliers' Information Note (SIN) specifies those technical characteristics of a single analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT and known commonly as a Direct Exchange Line (DEL), without Supplementary Services, delivered to a customer at the Network Termination Point (NTP). In this issue information from SIN 249 on Distinctive Ringing has been added to Annex A. Annex B text on minimum data rate has been amended.

SIN 297 Issue 4.0 - BT Featurelineâ Service Description.
This Suppliers Information Note (SIN) gives information about the BT FeatureLine Service. This issue includes the addition of 1471 Erasure, Master Socket internal extension connections and editorial changes.

SIN 359 Issue 1.1 - BT TextDirectÔ Service Description.
This SIN describes the BT TextDirect service (the Service) that is provided for PSTN customers who need to use textphones because of their disabilities. This issue contains editorial changes.

SIN 369 parts G and H Issue 1.2 -Protocol Implementation Conformance Statements (PICS) for ISDN 2e and ISDN 30e:
SIN 369 Part G issue 1.2 - Basic Access - Layer 3 T Reference Point - Point-to-Point Configuration

SIN 369 Part H issue 1.2 - Primary Rate Access - Layer 3 TReference Point - Point-to-Point Configuration
Amendments have been made to table A.91, PICs entry on the support of Date/time information element in Connect message transmitted by network.

Published 23//09/02


STIN 405 BT IPStream Symmetric
SPIN 066 BT IPStream Symmetric
These documents announce the trial of BT IPStream Symmetric delivered over SDSL to the End User; The BT IPStream Symmetric products provide session controlled symmetric IP connectivity between an End User and a Broadband Access Server (BAS) in the network, from which the End User connects to their Service Provider. It is similar to the BT IPStream ADSL products, but offers a symmetrical service (same data rate available both upstream and down stream) between the Customer and End User. The SDSL product requires a dedicated MPF and cannot co-exist with other BT services on the same MPF (Metallic Path Facility) circuit

STIN 404 BT DataStream Symmetric Trial (Service Provider) Services
SPIN 065 - BT DataStream Symmetric
These documents announce the trial of BT DataStream Symmetric, delivered over SDSL to the End User; The BT DataStream portfolio consists of a range of products (both symmetric and asymmetric) that enables a Customer to access multiple End Users via an ATM-based data network. BT DataStream products are targeted at Customers who are looking to develop their own Layer 3 transport services over the native ATM. The Customer defines the application(s) they wish to sell based on the DataStream network delivery service. The SDSL product requires a dedicated MPF and cannot co-exist with other BT services on the same MPF (Metallic Path Facility) circuit.

Published 11/09/02


SIN 379, Issue 1.1, BT NetStream 16 & BT NetStream 16 Longline - Service Description.
NetStream 16 is a Synchronous Digital Hierarchy point to point leased 155,520kbit/s high speed digital service supporting customer access which conforms to ITU-T Rec. G.707. NetStream 16 longline enables a number of digital leased lines at satellite sites to be aggregated for onward delivery to an SDH Mux at a common major customer site as a 155,520kbit/s presentation. This up-issue to the SIN introduces an STM-16 customer interface option (non-concatenated payload). Further information relating to STM-16 SDH customer interfaces is contained in SIN 333 'SDH Customer Interfaces at the STM-N level (where N=1,4,16).

SIN 169 Issue 2.0 - BT International MegaStream (2Mbit/s) Service Description
The (BT) International MegaStream service provides an international point-to-point digital private circuit, enabling data transmission at a variety of rates. This SIN describes the 2 Mbit/s customer interface, which offers useable customer data rates of 1920 kbit/s, 1984 kbit/s or 2048 kbit/s. In this issue editorial updates and information from the withdrawn SIN 170 (International MegaStream 2Mbit/s - Attachment Requirements) have been incorporated into SIN 169.

Published 10/09/02


SPIN 057 - BT IPStream

Withdrawn 17/10/02


SPIN 064 - ADSL Exchange Activate
This notifies the trial of the ADSL Exchange Activate product. This trial will take place in 8 exchanges allowing one Service Provider (SP) per exchange to serve 16 end users. The first exchange will available for service by the end of September 2002 with further exchanges available during the following 3 months.

Published 03/09/02


SIN 278 Issue 1.2 - Enhanced Information Service for Emergency Calls
EISEC is a service available to Emergency Authorities (EA) only, it enables BT emergency operators (999/112) to electronically transfer a caller's Calling Line Identity (CLI) to an EA. The EISEC service also enables the EA to access a screened BT database to verify the caller's name and address. This up-issue to the SIN clarifies System Security requirements. The associated Interface Protocol Spec. annex has been updated to Issue 1.6.

Published 02/09/02


SIN 225 Issue 3.0 - BT ISDNconnect Service Description
The BT ISDNconnect Service provides packet mode interconnection of a customer (who may typically be a Value Added Service Supplier or a packet switched data network operator) to its users by means of Permanent Logical Links (PLL). In this issue a new Annex B has been added “Recommendations for maximising the number of PLLs on an SAL”, which gives advice on making the best use of the capacity of Service Access Lines.

Published 23/08/02


SIN 347 Issue 1.4 - BT DataStream Office & BT DataStream Home (Service Provider) Services- Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the launched version of BT DataStream Office and BT DataStream Home, which has undergone trial. This issue reflects changes to the launch of ATM Access Port (with ATM In-Span Handover) as a variant to the Customer Access Link product component. And the introduction of Scalable VPs, ATM traffic classes on VPs and EUDP sharing limits per VP

Published 16/08/02


SIN 383 Issue 1.2 - BT WebPort Service Description
This Suppliers' Information Note describes the customer interface for the BT WebPort services, which are part of the BT IP Services Transport Portfolio, designed to provides a Service Provider’s end users with dial-in access to the Internet. It has been updated to remove external reference to SIN 321.

SIN 321 Issue 5 - BTnet Dial IP Service Description
This SIN has been updated and now only covers the following services.

 
  • BTnet Dial IP Bronze/Silver/Gold - withdrawn from new sale in November 2000 and due tobe ceased January 2003.
  • BTnet Dial IP Platinum and Gateway services - withdrawn from new sale in November 2000 and due to be ceased January 2003.

    For all other BT Ignite services that contain dial IP components, please refer to the following instead:

    • Ignite WebPort SIN383

    • Ignite SurfPort SIN389

    • Ignite SurfNet SIN392

    • Ignite BusinessPort SIN399

    • VPN Metro/equIP SIN390

    • VPN IP Clear SIN385

    • VPN IP Enabled SIN 264 Cellstream/SIN 291 FrameStream SINs

    • BTnet ISDN Gateway SIN302

SPIN 063 - BT Wholesale Access
"Wholesale Access" a BT PSTN voice product for Service Providers, which enables SP’s to offer their own branded telephony service to their own customers using the BT network. BT will provide, repair and maintain these lines. The reseller of the line will own the contractual relationship with the end user, BT will provide a consolidated bill to the SP for all of their services. The SP sets their own prices and bills their End Users.

Published 15/8/02


SPIN 062 - BT Wholesale Access
This SPIN has been withdrawn and has been replaced by SPIN 063.

Withdrawn 15/8/02


SIN 389 Issue 1.1 - BTnet SurfPort and SurfPort24 Service Description
This SIN has been re-named from "L2TP Interface For BT Dial IP" to "BTnet SurfPort and SurfPort24" it describes a flexible and transparent port-based package aimed at providing dial IP access to ISP and OLO host sites. SurfPort offers a number of access tariffs, enabling ISPs to fine tune their service offerings to satisfy changing end-user demand. This update includes, Addition of Standard IP operation as well as L2TP Passthrough and availability of RADIUS accounting on LT2P , providing a single up to date SIN for SurfPort and SurfPort24.

SIN 392 Issue 1.1 - BT Dial IP SurfNet Service Description
The BT Dial IP SurfNet service is offered to Service Providers and other customers requiring dial access into their IP networks. Dial access will be available only on the BT FRIACO number range. This SIN has been updated so as to be a standalone document. Clarification that the implemented L2TP interface conforms with the NICC agreed implementation has been added.

SIN 399 Issue 1.0 - BT Ignite Business Port Service Description.
BusinessPort provides economical dial IP access to corporate host sites. The BusinessPort package includes the provision of a range of telephone numbers, dial ports and host link, and uses BT's IP infrastructure to deliver reliable, secure dial IP services.

Published 13/08/02


STIN 376 Issue 1 - BT Wholesale Broadband G.SHDSL Interface Description
The information contained in this STIN relates to the trial of a potential service. Symmetric Digital Subscriber Line (SDSL) is a bearer technology that BT will use to support a portfolio of high-speed Broadband data services, these services will utilise G.SHDSL technology.

SIN 344 Issue 2.0 - BT Analogue Multipoint Service, Repeal of Withdrawal Notification
The up-issue of this SIN communicates BT's decision to continue supplying the analogue private circuit Multipoint service, earlier issues of this SIN had advised of an intention to withdraw the service.

SIN 355 Issue 1.2 - BT Analogue Private Circuits: Technical Characteristics of 2-Wire & 4-Wire Analogue Interfaces
This document has been re-issued to incorporate Network Termination & Test Apparatus information which had previously been published in SIN 203 (now withdrawn). Multipoint service detail has been updated to reflect BT's decision to continue providing the service. General document format changes have also been carried out.

Published 8/08/02


SIN 203, Issue 1.1: Analogue Private Circuits Provided to BS 6328 Parts 1 2 & 3 Network Termination and Test Apparatus (NTTA)
The content of this SIN has been placed in Section 2 of SIN 355 (Issue 1.2) 'BT Analogue Private Circuits: Technical Characteristics of 2-Wire & 4-Wire Analogue Interfaces'.

Withdrawn 8/08/02


SIN 339 - BT Textphone Service
SIN 339 gave technical information about the textual announcements that were provided for textphone users as part of the year 2000 National Code & Number Change.

Withdrawn 20/08/02


SPIN 062 - BT Wholesale Access.
"Wholesale Access" a BT PSTN voice product for Service Providers, which enables SP’s to offer their own branded telephony service to their own customers using the BT network. BT will provide, repair and maintain these lines. The reseller of the line will own the contractual relationship with the end user, BT will provide a consolidated bill to the SP for all of their services. The SP sets their own prices and bills their End Users.

Published 2/08/02


SIN 333 Issue 1.1 - SDH Customer Interfaces At the STM-N level (where N=1,4,16), Interface Characteristics
This SIN describes the characteristics of SDH customer interfaces to the BT Network at STM-N level (where N=1,4,16) to support VC-12, VC-3 and other VC-4 payloads (e.g. 140Mbit/s ATM, IP). The up-issue to 1.1 reflects editorial format changes and an update to ITU-T G.707 references to reflect the 10/2000 issue of the recommendation.

SIN 397 Issue 1.1 - BT IPStream Satellite Service Description
This Suppliers’ Information Note (SIN) describes the BT IPStream Satellite product offering. BT IPStream Satellite enables a Customer to access multiple End Users via a satellite network. This issue has been expanded to include details of the radius attributes.

Published 30/07/02


SIN 336 Issue 2.1 - Universal Serial Bus (USB) For the BT Network Interface Characteristics
This Suppliers' Information Note (SIN) describes the characteristics of the Universal Serial Bus (USB) Interface to the BT Network. This issue has been editorially updated.

Published 22/07/02


SIN 220 Issue 1.1 - BT Flexible Bandwidth Service - Service Description
Flexible Bandwidth Service (FBS) is a network service, which provides an alternative to the complexities of building corporate private Time Division Multiplex (TDM) networks of bought-in multiplexers and private transmission circuits. This issue contains editorial changes.

Published 17/07/02


SIN 316 Issue 4.3 - Enhanced Digital Value Call Access Service Description
This Service Information Note (SIN) describes the Enhanced Digital Value Call Access service. It is intended to provide general information about the service for Service Providers and Customer Premises Equipment (CPE) manufacturers and developers. In this issue the changes to the SIN are editorial with a few minor amendments which clarify the position of ISDN supplementary services offered.

Published 16/07/02


SIN 377 Issue 1.3 - Ignite Multi Media VoIP Service - Service Description
This BT Ignite Multimedia VoIP service utilises the customers own data network and manages call control to deliver real-time voice over IP (VoIP) and multimedia services to the desktop. This update provides information regarding H.323 gatekeeper to gatekeeper communication between a customers IP PBX and the Ignite Gatekeeper.

Published 12/07/02


SIN 385 Issue 2.0 BT IP Clear
This Suppliers Information Note (SIN) describes BT’s IP Clear service. which utilises MPLS technology to provide IP Virtual Private Network capability . The service offers access options at various rates employing Frame Relay as an underlying Layer 2 protocol.
This issue adds Flexing to the service which allows the customer to easily modify the used bandwidth. It also clarifies the use of the IP Precedence bit markings.

SIN 346 Issue 2.2 - BT ADSL Interface Description
This supplier information note (SIN) describes the interface presented at the end of an ADSL line at the end customer premises. It is one of a family of SINS relating to ADSL delivered services. This issue includes editorial changes to clarify topology options and source of CPE ADSL filter specification requirements

Published 11/07/02


SIN 261 Issue 5.1 -BT ISDN 2e and ISDN 30e Services using full ETSI Call Control SERVICE DESCRIPTION
This SIN describes the BT ISDN 2e and ISDN 30e ETSI services. This issue includes updates to the status on the withdrawal of the 7 kHz audio and videotelephony fallback procedure announced in Issue 5. It also confirms the launch of Presentation Number and clarifies setting of associated screening indicator. Plus other minor editorial changes. A full list of changes is given in Annex D of the SIN.

SIN 368 Issue 1.1 -Index of Protocol Implementation Conformance Statements (PICS) for ISDN 2e and ISDN 30e Customer Interfaces
As stated in SIN 261, the BT ISDN 2e and ISDN 30e services are implemented in conformance with the relevant ETSI standards. The ETSI standards for the ISDN user-network interface include PICS
(Protocol Implementation Conformance Statements). PICS are a formal method of defining an
implementation against a given standard. In this issue references to Issue 1.1 of SIN 369 Parts G and H, have been updated and the announcement that SIN 369 Part I has been withdrawn.

SIN 369 parts G and H Issue 1.1 -Protocol Implementation Conformance Statements (PICS) for ISDN 2e and ISDN 30e:
SIN 369 Part G issue 1.1 - Basic Access - Layer 3 T Reference Point - Point-to-Point Configuration

SIN 369 Part H issue 1.1 - Primary Rate Access - Layer 3 TReference Point - Point-to-Point Configuration
Amendments include the correction of support for MCn 12 (Bearer connection prior to call acceptance) in Table A.62 to align with SIN 261 Table A.2.

Published 9/07/02


Withdrawn 9/07/02


SIN 369 Part I, Issue 2 - Protocol Implementation Conformance Statements (PICS) for ISDN2e and ISDN30e: Basic and Primary Rate Access - Layer 3 protocol for Telephony 7 kHz and Videotelephony Teleservices.
The 7 kHz and videotelephony fallback procedure has been withdrawn, (as announced in SIN 261, Issue 5) therefore SIN 369 Part I issue 2 has been withdrawn.

Published 4/07/02


SIN 373 Issue 1.2 - BT WaveStream Connect Service Description
This Suppliers Information Note (SIN) describes the BT WaveStream Connect service utilising dense wave division multiplexing (DWDM). In this issue section 2.1 has been rewritten.

SIN 358 Issue 1.1 -BT International FeatureNet® Service
BT International FeatureNet provides UK customers with two services; access to overseas Virtual Private Networks (VPNs) allowing the creation of International VPNs, and an International Direct Dialling facility giving access to the public telephone network in the distant country. The SIN has been up-issued to amend the document's format to the current SIN style, technical characteristics of the service remain unchanged.

Published 3/07/02


SIN 324 Issue 3.2 - BT FeatureNet Embark Service Description
This Suppliers Information Note gives information about the BT FeatureNet Embark service. This issue has been editorially updated.

SIN 388 Issue 1 - ATM IN-SPAN HANDOVER OF DSL DELIVERED SERVICES
The BT DSL ATM In-Span Handover Service provides Other Operators (Customers) with a new point of access to End Users of BT Broadband ATM services.

Published 2/07/02


SIN 295 Issue 1.2 - BT Basic X.25 Direct Service Description
This document describes the BT Basic X25 Direct Service. This up-issue updates the Service Availability to reflect that the BT service is only available in the UK.

Published 18/6/02


Published 14/6/02


SIN 118 Issue 4.1 - BT LAN EXTENSION SERVICES 1, 2 & 10 (LES 1, 2 & 10) - Service Description
This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Services 1, 2 & 10 (LES 1, 2 & 10). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers. In this issue the following modifications have been made; LES 2 range limit to 4.5km, RJ45 variant details for Full-Duplex and VLAN packet support. Corrections to LES 1 & 2 NTE power consumption figures. Plus editorial changes.

SIN 337 Issue 2.1 - BT Mega Stream 622 BT MegaStream Aggregate (STM4) Service Description.
This document describes the BT MegaStream 622 and MegaStream Aggregate (STM4) services and provides technical information for terminal equipment manufacturers and suppliers. Reference to MegaStream 2.4Gbit/s has been removed as the service was not introduced by BT.

Published 13/6/02


SIN 56 Issue 1.1 - Message Switching Computers connected to SPC Telex Exchanges Technical Characteristics of the Interface.
This document details the technical characteristics and line signalling protocols to enable a Message Switching Computer (MSC) to work in conjunction with a Stored Program Control telex exchange using Single Channel Voice Frequency (SCVF) transmission. The up-issue converts the document to the current SIN style.

Published 12/6/02


SIN 352 Issue 2 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Multi-Line Analogue Line Interface
This Suppliers' Information Note (SIN) specifies the technical characteristics at the Network Termination Point (NTP) of the multi-line analogue interface of the Public Switched Telephone Network (PSTN) provided by BT. In this issue reference has been added to the Access Network Frequency Plan, plus other minor changes.

SIN 353 Issue 2 - BT Public Switched Telephone Network PSTN): Technical Characteristics Of The Direct Dialling In (DDI) Analogue Line Interface
This Suppliers' Information Note (SIN) specifies those technical characteristics of a direct dialling in (DDI) analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT. In this issue reference has been added to the Access Network Frequency Plan, plus other minor changes.

Published 10/6/02


SIN 373 Issue 1.1 - BT WaveStream Connect Service Description
This Suppliers Information Note (SIN) describes the BT WaveStream Connect service utilising dense wave division multiplexing (DWDM). The SIN has been updated to reflect a product re-naming from "DWDM1" to "WaveStream Connect". some other minor editorial changes have been included to aid clarity.

Published 6/06/02


SIN 356 Issue 1.1 - BT Public Switched Telephone Network (PSTN): Technical Characteristics of BT's Type 2 Channel Associated Signalling System (CASS) Interface.
This Suppliers' Information Note (SIN) specifies those technical characteristics of the digital interface of the PSTN using Type 2 Channel Associated Signalling System (CASS) provided by BT and delivered to a customer at the Network Termination Point (NTP). This issue has been editorially updated.

Published 31/05/02



SIN 306 Issue 4.2 - BT Video Stream & BT DataStream S (Service Provider) Services - Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the BT VideoStream & BT DataStream S Services and provides information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs), Corporate Businesses, Customer Premises Equipment (CPE) manufacturers and developers. In this issue section 2.2 has been amended to address the withdrawal of the "DataStream S" service.

Published 28/5/02

SIN 171 Issue 8.3 - BT ISDN 2(Using limited ETSI Call Control) SERVICE DESCRIPTION
This Suppliers Information Note (SIN) describes the "BT ISDN 2" service (I.420 Basic User-Network Interface) which is supported on the limited ETSI call control platform. It is intended to provide general information about the service for apparatus manufacturers and developers. This issue has been editorially updated and includes clarification in section 5 that Presentation Number (which had been shown in the previous issue as being a possible future enhancement) will not be implemented.

SIN 232 Issue 4.3 - BT ISDN 30 (I.421) - Service Service Description
This Suppliers Information Note (SIN) describes the BT ISDN30 (I.421) Service supported on the limited ETSI call control platform, (CCITT Recommendation I.421 User-Network Interface). It is intended to provide general information about the service for Customer Premises Equipment (CPE) manufacturers and developers. This issue has been editorially updated and includes clarification that Presentation Number is now available (previous issue had shown that it was a possible future enhancement).

SIN 243 Issue 3.1 - BT ISDN Services. ISDN International Interworking
The purpose of this Suppliers’ Information Note (SIN) is to provide Customer Premises Equipment (CPE) suppliers and manufacturers with information specific to international interworking between BT’s ISDN services and overseas ISDNs. This issue has been editorially updated.

SIN 279 Issue 1.2 - BT Universal Freefone Service Administrative Support To Suppliers
This Suppliers Information Note advises that from March 1997 the BT network carries Universal Freefone Service (UFS) traffic. This service enables an international Freephone customer to be allocated a unique Freephone number that is the same throughout the World. This issue has been editorially updated.

Published 27/5/02


SIN 396 Issue 1 - BT Wavestream Connect NationalÔ and Wavestream MetroÔ Service Description
This Suppliers’ Information Note (SIN) provides a description of the BT Wavestream Connect National and Wavestream Metro services, and their interfaces.

Published 14/05/02


SIN 350 Issue 1.1 - BT Public Switched Telephone Network (PSTN): Network Tones And Announcements
This document describes the supervisory tones generated by the BT PSTN and gives general information about BT network announcements. The up-issue removes the description of 'Acknowledgement Tone' as this is not a PSTN derived tone. The format of the document has been updated to the current SIN style.

Published 9/05/02

SIN 195 - Livenet Service Description

Withdrawn 13/5/02

SPIN 059 - BT Central Plus Trial

Withdrawn 10/5/02




Published 26/04/02


SIN 389 Issue 1.0 - L2TP Interface For BT Dial IP Service Description
This SIN describes the characteristics of the L2TP (Layer 2 Tunnelling Protocol) Interface available for BTnet Dial IP only. It continues the information previously presented in STIN 389.

SIN 227 Issue 3.2 - CDS Ô Calling Line Identification Service
This Suppliers Information Note (SIN) has been prepared to give technical information about the BT CDS Ô Calling Line Identification (CLI) Service which is provided over the analogue BT local access network. This issue has been editorially updated.

Published 26/04/02


SIN 397 Issue 1 - BT IPStream Satellite Service Description.

SPIN 061 - BT IPStream Satellite Trial
BT IPStream Satellite is a hybrid Internet access system with satellite delivery to the End User. The service is used in conjunction with an End Users existing dial Internet access to provide a basic downstream capability of up to 256 Kbit/s peak via satellite. The End User will be able to select from a range of faster download speeds, up to 4 Mbit/s peak. The BT IPStream Satellite product is delivered by satellite and is available to End Users that are within the satellite receive footprint.

Published 24/04/02


SIN 251, Issue 1.2, 'Private Circuit Services, Evolving Network Modernisation and its Effect On Analogue Private Circuits'.
This SIN establishes the current status of, and BT's current thinking for, the core & access networks and as a consequence the future availability of BT's d.c. based private circuit products. The review of this document coincides with the withdrawal of SIN 142 'Withdrawal of the Metallic Facility for Private Circuit Services', content of SIN 142 being rationalised into the up-issue of SIN 251.

Published 23/04/02


SIN 381 Issue 1.1 - Withdrawal of Digital Access to BT’s Callstream Services Via a 2048 kbit/s Interface Using Channel Associated Signalling and Basic Mid Call Diversion for use with BT’s Callstream Services.
The Digital Access to BT’s Callstream Services Via a 2048 kbit/s Interface Using Channel Associated Signalling (detailed in SIN 204) and the Basic Mid Call Diversion (detailed in SIN 211) are to be withdrawn. This withdrawal does not affect "Enhanced Digital Valuecall Access" which is described in SIN 316 and will continue to be available.

Published 16/04/02


SIN 260 Issue 1.2 - BT International Megastream 34 Service Description
This Suppliers' Information Note (SIN) describes the BT International MegaStream 34 Service and provides technical information for terminal equipment (TE) manufacturers and suppliers. This up-issue includes editorial changes.

Published 12/04/02


SPIN 060 - BT Central Plus Launch
This service is suitable for Service Providers or Virtual ISP’s who have no IP infrastructure, but wish to connect End Users direct to the Internet, there is no physical interface to an SP LAN or infrastructure. The BT Central Plus service is provided within BT’s Broadband platform.

Published 11/04/02

SIN 184 Issue 1 - Interim Analogue Private Circuit - Service Description

SIN 179 Issue 1 - Starsat Service - Service Description

Withdrawn 15/4/02



SIN 381 Issue 1 - Withdrawal of Digital Access to BT’s Callstream Services Via a 2048 kbit/s Interface Using Channel Associated Signalling and Basic Mid Call Diversion for use with BT’s Callstream Services.
The Digital Access to BT’s Callstream Services Via a 2048 kbit/s Interface Using Channel Associated Signalling (detailed in SIN 204) and the Basic Mid Call Diversion (detailed in SIN 211) are to be withdrawn. This withdrawal does not affect "Enhanced Digital Valuecall Access" which is described in SIN 316 and will continue to be available.

Published 2/04/02


SIN 392 Issue 1 - BT Dial IP SurfNet Service Description
The BT Dial IP SurfNet service is offered to Service Providers and other customers requiring dial access into their IP networks. Dial access will be available only on the BT FRIACO number range.

SIN 395 Issue 1 - MacroNet High Speed MPLS
The "MacroNet High Speed MPLS" service provides both a physical access and a logical connection to a defined IP VPN hosted on BT’s Multi-Protocol Label Switching (MPLS) platform. The interface used is Gigabit Ethernet: IEEE 802.3 (Ethernet) at 1000Mbit/s (see SIN 360).

Published 28/3/02


SIN 394 Issue 1 - BT Broadlook Service Description
The BT BroadLook service transports Serial Digital Component Video (SDCV) at 270 Mbit/s. The SDCV may also contain embedded AES digital audio signals conforming to SMPTE 272M. Initial circuit availability is limited to nominally within 30 km of BT Tower London.

Published 26/3/02


SIN 351 Issue 3 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Single Analogue Line Interface.
This Suppliers' Information Note (SIN) specifies those technical characteristics of a single analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT and known commonly as a Direct Exchange Line (DEL), without Supplementary Services, delivered to a customer at the Network Termination Point (NTP).
In this issue the following changes have been made:

Published 21/3/02

SIN 354 Issue 2 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The
Supplementary Services available on the Analogue Line Interface


  • Clause 3.1, Off-line d.c. Voltage, examples of discontinuous voltage added. Clause 9.9, Line Sharing, added.
  • Clause 11.2, Future Plans, revised.
  • Clause 4.3, Recall added
  • Editorial changes.

This Suppliers' Information Note (SIN) specifies those technical characteristics of the Supplementary Services available on an analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT, delivered to a customer at the Network Termination Point (NTP).

This update includes:

Published 14/3/02

SIN 274 Call Waiting/Caller Display Interworking
SIN 280 Simplified Call Waiting
SIN 307 Prompted Ring Back Tone


  • Entries for BT Ring Back and Call Waiting modified.

  • “Recall” entry deleted (to be moved to SIN 351).

  • Descriptions of Caller Return 1471, Reminder Call & Charge Advice added to complement information in Annexes.

  • 1471 Erasure added.


These SINs have been withdrawn and the content of these SINs have now been incorporated into SIN 354.

Withdrawn 14/3/02

Published 8/03/02

SPIN 047 BT VideoStream Plus

Withdrawn 21/3/02 - Time Expired



SIN 265 Issue 2.2 - BT MediaNet 34 & BT MediaNet 155 Range Service Description
The BT MediaNet 34 & 155 services provide for multiple service delivery for the transport of video, audio, and associated multimedia services between customer premises. This up-issue reflects the introduction of a 'Silver' circuit resilience option and removal of a 30km boundary restriction between closed user group networks and CNAPs.

SIN 383 Issue 1.1 - BT Web Port Service Description
This Suppliers' Information Note describes the customer interface for the BT WebPort services, which are part of the BT IP Services Transport Portfolio. In this issue additional Premium Rate number ranges have been added and inclusion of the DNS capability to enable customers to look up the DNIS used by an end user.

SIN 367 Issue 2 - Characteristics of the BT Network: Electrical Safety and EMC
This Suppliers' Information Note (SIN) describes the electrical safety and EMC characteristics of the interfaces of BT’s fixed telecommunications network as presented to customers at the Network Termination Point (NTP). In this issue LES 10 and LES 100 have been added to Table 1 and a reference to BT Generic Standard GS7 has been added.

SIN 240 Issue 5.1 - BT Switched Multi-Megabit Data Service, Service Description

SIN 264 Issue 6.4 - BT Cell Stream Service Description

SIN 385 Issue 1.4 - BT IP Clear

Clarification of the use of resilience within the IP enabled service set has been added to these SINs to aid use and configuration of the resilience service options.

Published 28/2/02


SIN 332 Issue 1.1 - BT Broadcast Services Audio Broadcast Network Service Description
This Suppliers' Information Note (SIN 332) describes the Audio Broadcast service which is an aggregate service based upon the BT MusicLine One and BT MusicLine 2000 services. Issue 1.1 adds information regarding 'Co-Location' of hub & studio, the format of the document has also been amended to the current SIN style.

SIN 161 Issue 4.1 - BT LAN Extension Service 3 Service Description
This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 3 (LES 3). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers. This up-issue includes editorial changes.

Published 13/02/02


SPIN 059 - BT Central Plus Trial
BT has introduced a portfolio of Broadband ADSL based high-speed data services. This Service Provider Industry Notification (SPIN) introduces the trial of the BT Central Plus product. Which is available within the BT IPStream portfolio as described in SINs 329 & 386.

Published 8/02/02


SIN 385 Issue 1.3 BT IP Clear
This Suppliers Information Note (SIN) describes BT’s IP Clear service. which utilises MPLS technology to provide IP Virtual Private Network capability . The service offers access options at various rates employing Frame Relay as an underlying Layer 2 protocol.
This up-issue provides the addition of 64 & 128 kbit/s rates on the X.21 interface.

Published 06/02/02


SIN 347 Issue 1.3 - BT DataStream Office & BT DataStream Home Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the launched version of BT DataStream Office and BT DataStream Home, which has undergone trial. This SIN provides information for use by BT and Customers - Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs), and Corporate Businesses - and Customer Premises Equipment (CPE) manufacturers and developers.

Published 31/1/02


SIN 344 Issue 1.1 - 'BT Analogue Multipoint Service - Withdrawal Notification'
This Suppliers' Information Note (SIN) communicates BT's plan for the withdrawal of the Analogue Multipoint service. Originally issued June 2000, this up-issue to 1.1 updates the document's format & amends a reference to SIN 355 (formerly TIG 9).

Published 29/01/02


SIN 345 Issue 1.1 - BT Channel Extension Service 1000 - Service Description
This Suppliers Information Note (SIN) describes the BT Storage Area Network (SAN) Fibre Channel Extension Service 1000 (CES 1000). This issue has been editorially updated.

SIN 181 Issue 1.1 - Fixed Fee Charging
This Suppliers' Information Note (SIN) describes the Fixed Fee Charges used over the BT PSTN. Issue 1.1 has been converted to e-format, as it was formerly only available as a paper document.

SIN 182 Issue 1.1 - Payphone Exchange Line Service
This Suppliers' Information Note (SIN) describes the BT Payphone Exchange Line classification. Issue 1.1 has been converted to e-format, as it was formerly only available as a paper document.

Published 28/01/02

SIN 267Issue 1.1 - BT Medianet 1 Service Description

Withdrawn 26/02/02



SIN 325 Issue 2.1 - Compliance of Terminal Equipment - Information for Suppliers
This Suppliers Information Note (SIN) gives reference information about the compliance of terminal equipment intended for connection to BT Networks. This issue has been editorially updated.

Published 24/01/02


SIN 203 Issue 1.1 - Analogue Private Circuits Provided to BS 6328 Parts 1 2 & 3; Network Termination and Test Apparatus (NTTA) - Technical Characteristics of the Interface
This Suppliers' Information Note (SIN) describes the technical characteristics of the interface for attachments of apparatus, conforming to BS 6328, to the BT Analogue Private Circuit network. Issue 1.1 has been converted to e-format, as it was formerly only available as a paper document.

Published 08/01/02


Published 07/01/02


SIN 199 Issue 2.1 - International Private Circuit (IPC) Managed Access Multi-Circuit Service Description
This Suppliers Information Note (SIN) describes the IPC Managed Access - Multi-Circuit service using a 2.048 Mbit/s G.703 interface. This issue contains editorial changes.

Published 03/01/02


SIN 225 Issue 2.5 - BT ISDNconnect Service Description
The BT ISDNconnect Service provides packet mode interconnection of a customer (who may typically be a Value Added Service Supplier or a packet switched data network operator) to its users by means of Permanent Logical Links (PLL). This document has been updated to reflect that a Customer's Standby Line connection to a Packet Handler is not restricted to the same exchange area


SIN 390 Issue 1 - BT’s managed IP VPN services, MetroVPN and VPN EquIP - SERVICE DESCRIPTION
The Suppliers Information Note (SIN) provides information about BT’s managed IP VPN services, metroVPN and VPN EquIP.

Published 21/12/01

Published 17/12/01


SIN 247 Issue 1.1 - BT International MegaStream 45 Service Description
This Suppliers' Information Note (SIN) describes the BT International MegaStream 45 Service and provides technical information for terminal equipment (TE) manufacturers and suppliers. This issue contains editorial changes.

Published 14/12/01


SIN 338 Issue 1.2 - BT LAN Extension Service 1000 - Service Description
This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 1000 (LES 1000). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers. This issue contains editorial changes.

SIN 366 Issue 2 - BT VideoStream Plus (Service Provider) Services - Service Description And Interface Specification
This Supplier’s Information Note (SIN) describes the BT VideoStream Plus Service and provides information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs), Corporate Businesses, Customer Premises Equipment (CPE) manufacturers and developers. This issue includes an update for self-install at the End-User and editorial changes.

Published 4/12/01


SPIN 056 BT StreamLine Direct

STIN 382 Issue 1.1 - BT StreamLine Direct (Service Provider) Services
Service Description And Interface Specification

Withdrawn 3/12/01


SIN 94 Issue 1.1 - Telex Fallback and Monitor Units Technical Characteristics of the Interface
This Suppliers' Information Note (SIN) describes the technical characteristics of the interface for telex fallback and monitor units with the BT Telex network. Issue 1.1 has been converted to e-format, as it was formerly only available as a paper document.

SIN 278 Issue 1.1 - Enhanced Information Service for Emergency Calls. Service Description
This SIN (SIN 278) provides information about the BT Enhanced Information Service for Emergency Calls, and the signalling mechanism to be used between the customer premise equipment and the BT network to access an EISEC-DB (data base for EA access) This issue has IP Spec Issue 1.5 added.

Published 26/11/01


SIN 385 Issue 1.2 BT IP Clear
This Suppliers Information Note (SIN) describes BT’s IP Clear service. which utilises MPLS technology to provide IP Virtual Private Network capability . The service offers access options at various rates employing Frame Relay as an underlying Layer 2 protocol.
This up-issue provides the addition of 512 kbit/s rate on X.21 interface.

Published 16/11/01


STIN 389 Issue 1 - L2TP Interface For BT Dial IP Interface Characteristics
This STIN describes the characteristics of the L2TP (Layer 2 Tunnelling Protocol) Interface available for BTnet Dial IP only, and does not apply to any other BT Service.

Published 12/11/01


SIN 275 Issue 4.1 - Lowland Digital Access Service Description
This Suppliers’ Information Note has been prepared to give technical information about "BT Highway", BT's Lowband Digital Access Service. This issue has been editorially updated.

Published 8/11/01


SIN 222 Issue 2.2 - BT ISDN 30 - Service Description

SIN 277 Issue 3.1 - Impact on Terminal Equipment of Increased Dialled Digit Number Length in the PSTN and ISDN

SIN 284 Issue 1.1 - BT Red CARE - Service Description and Attachment Requirements

SIN 312 Issue 1.4 - BT ISDN Services Overview

SIN 365 Issue 2.2 - Introduction of ATM Infrastructure-Technical Information for Suppliers

These Suppliers' Information Notes have been editorially updated.

Published 7/11/01


The following SINs have been withdrawn.

SIN 372 Access Codes (1xx(xx) codes) and the Impact on Terminal Equipment (TE)
Incorporated into SIN 277 Issue 3.1.

SIN 294 BT ISDN 30 (DASS2) Services - Processing of 3.1kHz Audio Calls
Incorporated into SIN 222 Issue 2.2

SIN 363 BT ISDN 30 (DASS) SWAP - Changes to use of an existing network service.
Incorporated into SIN 222 Issue 2.2

Withdrawn 7/11/01


SIN 275 Issue 4 - BT Highway – BT’s Lowband Digital Access Service Service Description

This Suppliers’ Information Note gives technical information about "BT Highway", BT's Lowband Digital Access Service. This issue has had the driver support for USB interface updated & editorial changes.

Published 25/10/01


SIN 293 Issue 2 - BT Local Area Network (LAN) Extension Service 622 (LES 622)
The LES 622 services are constructed from the LES 622B generic building block consisting of a single link between customers sites. The services operate at 622,080kbit/s (±20ppm) at distances of up to approximately 25km between customers sites. The NTE now offers a single mode fibre interface in addition to the multimode interface.

Published 16/10/01


SIN 286 Issue 2 - BT LAN Extension Service 155 - Service Description
This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 155 (LES 155). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers. The NTE now offers a single mode fibre interface in addition to the multimode interface.

Published 15/10/01


SIN 366 Issue 1.1 - BT VideoStream Plus (Service Provider) Services Service Description And Interface Specification
The BT VideoStream Plus Service is aimed at Independent Service Providers and Other Licensed Operators (including BT’s internal service provider and large customers), with a network service to support multi-media content services, including video based services delivered to the TV Set Top Box (e.g. Video On Demand) and data services (e.g. internet access). This issue has been editorially updated.

SIN 347 Issue 1.2 - BT DataStream Office & BT DataStream Home (Service Provider) Services Service Description And Interface Specification
BT DataStream enables a Customer to access multiple End Users via an ATM-based data network. BT
DataStream is targeted at Customers who are looking to develop their own Layer 3 transport services
over the native ATM. The Customer defines the application(s) they wish to sell based on the DataStream
network delivery service. Section 3.5 includes information on provision of End User extension for BT DataStream “Self Install”. “End User Data Path” name changed to “End User Access” and hence “EUDP changed to EUA”.

SIN 385 Issue 1.1 BT IP Clear
This Suppliers Information Note (SIN) describes BT’s IP Clear service. which utilises MPLS technology to provide IP Virtual Private Network capability . The service offers access options at various rates employing Frame Relay as an underlying Layer 2 protocol. This issue contains a correction to a wrongly referenced standard.

Published 09/10/01


SPIN 042 - Calls & Access Product Briefing: Call Minder

SPIN 050 - BT Answer - New Messaging Service from BT

SPIN 034 - Service Provider 1471 Extra

SPIN 035 - Calls & Access Information; per second pricing for operator assistance

SPIN 037 - Calls & Access Total Care and Calls & Access Prompt Care, Enhanced Maintenance products

SPIN 040 - Automated Engaged Line Assistance Service - LAUNCH POSTPONED

Withdrawn 19/10/01 - Time expired


SPIN 036 - Multi-line/Digital Product

SPIN 033 - Impact upon Service Providers arising from
"The Big Number" number change

SPIN 043 - Schools Internet Caller and Public Institutions Internet Caller

Withdrawn 17/10/01 - Time expired


SIN 346 Issue 2.1 - BT ADSL Interface Description
This supplier information note (SIN) describes the interface presented at the end of an ADSL line at the end customer premises. It is one of a family of SINS relating to ADSL delivered services. This issue includes editorial changes to clarify topology options and source of CPE ADSL filter specification requirements

Published 02/10/01


SIN 386 Issue 1.0 BT IPStream Office & BT IPStream Home Products
These additions to the BT IPStream portfolio introduce products where the End User termination is a 'wires only' G.DMT interface utilising cpe micro-filters as described in SIN 346.

Published 28/09/01


SIN 301 Issue 1.1 - UK National Code and Number Change

Withdrawn 9/10/01- Time expired


SPIN 046 BT DataStream Office & BT DataStream Home

Withdrawn 08/10/01


SIN 385 Issue 1.0 BT IP Clear
This Suppliers Information Note (SIN) describes BT’s IP Clear service. which utilises MPLS technology to provide IP Virtual Private Network capability . The service offers access options at various rates employing Frame Relay as an underlying Layer 2 protocol.

Published 19/09/01


SIN 118 Issue 4 - BT LAN Extension Service Nos.1&2 & 10 (LES 1,2 & 10) - Service Description
Addition of LES 10 and LES 2 10-BaseT / RJ45 service options. General review, update and revision of document including International Standards for technical references, and approval information

Published 11/09/01


SIN 348 Issue 1 - Continuation of BT METER PULSE FACILITY (MPF) Information for Suppliers

Withdrawn 24/09/01


Continuation of BT METER PULSE FACILITY (MPF) Information for Suppliers.

Withdrawn 21/09/01


SIN 146 Issue 2 - BT Business Service V002 (VTS) - Description
Withdrawn as service is no longer available.

Withdrawn 12/09/01


SIN 225 Issue 2.4 - BT ISDNconnect Service Description
The BT ISDNconnect Service provides packet mode interconnection of a customer (who may typically be a Value Added Service Supplier or a packet switched data network operator) to its users by means of Permanent Logical Links (PLL). This issue includes the addition of support of ISDNconnect to ISDN 2e interfaces configured in T-reference point configuration.

Published 31/08/01


SIN 357 Issue 3 - BT FeatureNet™* Service: Technical Characteristics Of The Interfaces
This Suppliers' Information Note (SIN) specifies the technical characteristics at the Network Termination Point (NTP) of the interfaces for BT’s FeatureNet service. In this issue Annex A has been updated BTNR 188 Sections 44 to 48 added. Clause 7 CLI release information updated and the addition of Annex E - Trial of TCP-IP access to the CompuCALL facility.

Published 30/08/01


SPIN 058 - Voice Messaging Outpayment (VMO) Process
The payment details and terms and conditions for the VMO are documented in SPIN 054. The following is the process that Service Providers should follow to claim the VMO.

Published 28/08/01


SIN 365 Issue 2.1 - Introduction of ATM Infrastructure - Technical Information For Suppliers
BT is introducing into its national network a new generation network-switching infrastructure implementing Asynchronous Transfer Mode (ATM) switching technology. This document gives an overview of this change to the BT core network. This SIN has been amended to allow for the possibility that in the future, ATM may be introduced into other parts of the BT network other than the DMSU network layer.

SIN 329 Issue 5.4 - BT Broadband IP Products - Service Description
Suppliers’ Information Note (SIN) 329 describes the interfaces presented used to support BTs IP products. It has been updated primarily to include the additional support of PPP over Ethernet protocol. A list of all the changes are given in Annex A of the SIN.

SPIN 057 - BT IPStream
Service Provider Industry Notification (SPIN) 057 replaces SPIN 052 and has been published to reflect the same changes as described above that resulted in the revision to SIN 329.

Published 20/8/01


SIN 346 Issue 2 - BT ADSL Interface Description
This Suppliers’ Information Note (SIN) describes the interface presented at the end of an ADSL line at the end customer premises. It is one of a family of SINs relating to ADSL delivered services. This has had added for guidance the parameters that would apply to ADSL filters when provided as CPE.

SIN 380 Issue 1 - BT MetroNetWave Service Service Description
MetroNetWave is a point to point wavelength service delivered over a BT provided customer private network (three or more sites) utilising dense wave division multiplexing, - offering very high bandwidth connectivity, up to 2.5Gbit/s per wavelength. The service allows the transport of the following services: - FDDI, ESCON, Gigabit Ethernet, Fibre Channel, STM-1, STM-4, STM-16, FICON, ATM-155, ATM-622, Fast Ethernet, Video in the format DVB ASI,

Published 17/8/01


SIN 347 Issue 1.1 BT DataStream Office & BT DataStream Home (Service Provider) Services Service Description And Interface Specification
BT DataStream enables a Customer to access multiple End Users via an ATM-based data network. BT
DataStream is targeted at Customers who are looking to develop their own Layer 3 transport services
over the native ATM. The Customer defines the application(s) they wish to sell based on the DataStream
network delivery service. In this issue section 3.4.2.4 has been updated to include more information on Customer’s responsibilities in shaping traffic.

Published 16/08/01


STIN 382 Issue 1.1 - BT StreamLine Direct (Service Provider) Services - Service Description And Interface Specification
This Supplier’s Trial Information Note (STIN) describes the BT StreamLine Direct service and provides
information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs),
Other Network Operators (ONOs) and Corporate Businesses. This issue adds the future option of Bridged Ethernet which replaces the proposed X.21 option

SPIN 056 - BT StreamLine Direct
This Service Provider Industry Notification (SPIN) provides information about the trial of BT StreamLine Direct (formally known as BT Broadband Point to Point Private Circuit) using BT’s Broadband ATM transport services. This SPIN replaces SPIN 051

Published 02/08/01



STIN 388 Issue 1.0 - ATM In-Span Handover Of DSL Delivered Services. Service Description and Interface Specification
Provides Other Operators with a new point of access to End Users of BT DataStream Home, BT DataStream Office and BT VideoStream Plus services.

SIN 291 Issue 2.3 - BT FrameStream Service Description
Inclusion of X.21 2 Mbit/s interface option and CellStream/FrameStream network interworking option.

SIN 264 Issue 6.3 - BT CellStream Service Description
Inclusion of CellStream/FrameStream network interworking option.

Published 30/07/01


SPIN 054 - Voice Messaging Outpayment (VMO)
The Voice Messaging Outpayment was introduced in SPIN 050 and more information given in SPIN 053, this information note contains revised payment details and replaces SPIN 053.

SIN 321 Issue 4 - BTnet Dial IP Service Description
The BTnet Dial IP service provides a UK IP VPN ( Virtual Private Network) service offering for customers requiring dial access into their IP networks. This service now supports Border Gateway Protocol 4 (BGP4).

Published 27/06/01


SIN 351 Issue 2 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Analogue Line Interface Annex B has been amended to add minimum 2400 bit/s data rate.

Published 26/06/01


SIN 261 Issue 5 - BT ISDN 2e and ISDN 30e Services using full ETSI Call Control -
SERVICE DESCRIPTION

SIN 365 Issue 2 - Introduction of ATM Infrastructure - TECHNICAL INFORMATION FOR SUPPLIERS

SIN 369 Part I Issue 2 - Protocol Implementation Conformance Statements (PICS) for ISDN 2e and ISDN 30e: Basic and Primary Rate Access - Layer 3 protocol for
Telephony 7 kHz and Videotelephony Teleservices
These SINs have been updated primarily to announce the proposed withdrawal of the ISDN telephony 7 kHz and videotelephony fallback capability. The update of SIN 261 to Issue 5 also confirms the launch of the Presentation Number service and includes a number of other minor amendments (see SIN 261, Annex D for details).

Published 12/06/01


SPIN 051 - BT StreamLine Direct
This Service Provider Industry Notification (SPIN) provides information about the trial of BT StreamLine Direct (formally known as BT Broadband Point to Point Private Circuit) using BT’s Broadband ATM transport services.

STIN 382 - BT StreamLine Direct (Service Provider) Services - Service Description And Interface Specification
This Supplier’s Trial Information Note (STIN) describes the BT StreamLine Direct service and provides information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs) and Corporate Businesses.

Published 29/05/01


SIN 356 Issue 1 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of BT's Type 2 Channel Associated Signalling System (CASS) Interface.
Previously published as TIG 6 - updated to a Suppliers' Information Note format.
Withdrawal of TIG 6 is to coincide with the publication of SIN 356.

SIN 358 Issue 1- BT International FeatureNet® Service: Technical Characteristics Of The Interfaces.
Previously published as TIG 13 - updated to a Suppliers' Information Note format
Withdrawal of TIG 13 is to coincide with the publication of SIN 358.

Published 21/05/01


SPIN 053 Voice Messaging Outpayment (VMO)
The VMO was introduced in SPIN 050, this information note contains the payment detail.

Published 18/05/01 (Withdrawn and replaced by SPIN 054 - 27/06/01)


SIN 336 Issue 2.0 - Universal Serial Bus (USB) For the BT Network - Interface Characteristics
This SIN now includes support for the Series "A" USB plug connector or a Series "B" USB receptacle connector.

SIN 374 Issue 1.0 - L2TP Interface For BT IPStream
Converted from STIN to SIN. This SIN confirms availability of service.

SIN 329 Issue 5.3 - BT Broadband IP Products - Interface Specification
Updates SIN 329 Issue 5.2 to include L2TP within IPStream.

SPIN 052 - BT IPStream - Replaced by SPIN 057
BT has introduced a portfolio of Broadband ADSL based high speed data services. This Service Provider
Industry Notification (SPIN) replaces SPIN 048 and provides information about the BT IPStream element
of the Broadband portfolio.

Published 11/05/01


SIN 383 Issue 1.0 - BT WebPort
This Suppliers' Information Note describes the customer interface for the BT WebPort services, which are part of the BT IP Services Transport Portfolio. The WebPort service is designed to provide Internet Access for use by Internet Service Providers (ISP), Virtual ISPs and BT. The service has been designed for Service Providers operating their own Service Desk capability offering their own front-end installation, maintenance and billing support to their dial-in users.

Published 3/05/01


SIN 346 Issue 1.1 - BT ADSL Interface Description
This Suppliers’ Information Note (SIN) describes the interface presented at the end of an ADSL line at the end customer premises. It is one of a family of SINs relating to ADSL delivered services.

Published 23/04/01


STIN 386 BT IPStream Office & BT IPStream Home Products, Service Description and Interface Specification
These additions to the BT IPStream portfolio introduce products where the End User termination is a 'wires only' G.DMT interface.

Published 20/04/01


SIN 212 Issue 2.0 - Differential Call Barring for Premium Rate Services and the Launch of the 0891 Code

Withdrawn as time expired

SIN 147 Issue 2.0 - BT Business Service V002 (VTS) - Connection Reqs.

Withdrawn 19/04/01


SIN 352 Issue 1 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Multi-Line Analogue Line Interface
Previously published as TIG 2 - updated to a Suppliers' Information Note format.
Withdrawal of TIG 2 coincides with the publication of SIN 352.

Published 12/04/01


SIN 264 Issue 6.1 - BT CellStream ™ Service Description
The BT CellStream service supports the Broadband Integrated Services Digital Network (B-ISDN) platform, using a combination of Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) transport mechanisms for the transport of Asynchronous Transfer Mode (ATM) cells.
This service has had an IP-Enabled option added specifically for IP use.

SIN 291 Issue 2.2 - BT FrameStream ™
This Suppliers Information Note (SIN) describes the BT FrameStream service which uses Frame Relay (FR) technology. This document provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers.
This service has had an IP-Enabled option added specifically for IP use.

Published 6/04/01


SIN 377 Issue 1.1 - Ignite Multi Media VoIP Service - Service Description
This BT Ignite Multimedia VoIP service utilises the customers own data network and manages call control to deliver real-time voice over IP (VoIP) and multimedia services to the desktop. This now includes guidance on customer data network requirements.

Published 4/04/01


SIN 337 Issue 2.0 - BT MegaStream 622, BT MegaStream Aggregate (STM4), BT MegaStream 2.4Gbit/s - Service Description
This Suppliers' Information Note describes the BT MegaStream 622, MegaStream Aggregate (STM4), and BT MegaStream 2.4Gbit/s services It should be read in conjunction with SIN333, SDH Customer Interfaces At the STM-N level (where N=1,4,16).

Published 30/03/01


SIN 327 Issue 1 - Distribution of Suppliers' Information Notes

Withdrawn 9/04/01


SIN 379 Issue 1 - BT NetStream 16 & BT NetStream 16 Longline Service Description
BT NetStream 16 is a customer Hub - Hub 155Mbit/s digital leased line service. NetStream 16 Longline enables a customer's satellite circuits within an area to be collected and aggregated to 155Mbit/s for onward delivery to a distant end Hub site.

Published 27/03/01


SIN 351 Issue 1 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Single Analogue Line Interface
Previously published as TIG 1 - updated to a Suppliers' Information Note format. The conversion includes the addition of information relating to the Routine Testing of the Local Network previously contained in SIN 156 (SIN 156 has now been withdrawn). SIN 351 also contains reference to the Access Network Frequency Plan.
Withdrawal of TIG 1 and SIN 156 is to coincide with the publication of SIN 351.

SIN 353 Issue 1- BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Direct Dialling In (DDI) Analogue Line Interface
Previously published as TIG 3 - updated to a Suppliers' Information Note format.
Withdrawal of TIG 3 and SIN 156 is to coincide with the publication of SIN 353.

SIN 354 Issue 1 - BT Public Switched Telephone Network (PSTN): Technical Characteristics Of The Supplementary Services available on the Analogue Line Interface.
Previously published as TIG 7 - updated to a Suppliers' Information Note format.
Withdrawal of TIG 7 and SIN 156 is to coincide with the publication of SIN 354.

Published 23/03/01


SPIN 050 - BT Answer - New Messaging Service from BT
BT plans to introduce BT Answer, a new network based messaging service, in July 2001. BT is proposing to offer this voice messaging service free of charge to all customers with a single, fixed BT or Calls and Access exchange line. Customers will be able to "opt-in" for the messaging service.

Published 14/03/01


SIN 315 - Analogue Display Services Interface - Technical Information for Suppliers Withdrawn 26/3/01
TIG 1 - Withdrawn and replaced by SIN 351 - 26/3/01
TIG 3 - Withdrawn and replaced by SIN 353 - 26/3/01
TIG 7 - Withdrawn and replaced by SIN 354 - 26/3/01


SIN 321 Issue 3.2 - BTnet Dial IP Service Description.
The BTnet Dial IP service provides a UK IP VPN ( Virtual Private Network) service offering for
customers requiring dial access into their IP networks. This document includes an extended range of dial access codes, the Gigabit Ethernet Interface and the addition of Packet over SONET using STM 1/4/16.

Published 02/03/01


SIN 377 Issue 1 - Ignite Multi Media VoIP Service - Service Description
This BT Ignite Multimedia VoIP service utilises the customers own data network and manages call control to deliver real-time voice over IP (VoIP) and multimedia services to the desktop.

Published 12/02/01


SPIN 049 - BT Ignite Broadband.ADSL Availability Checker

Withdrawn 01/03/01


SIN 223 Issue 3 - BT MegaStream 1, BT MegaStream 2 and MegaStream 8 Service Description
SIN 223 Issue 3 describes the BT MegaStream 1, BT MegaStream 2 and BT MegaStream 8 services and provides technical information for terminal equipment manufacturers, suppliers and developers. This revision of the SIN introduces the MegaStream 1 Service, using standard MegaStream G703 and X.21 interfaces.

Published 09/02/01


SIN 220 Issue 1 - Flexible Bandwidth Service - Service Description
The BT Flexible Bandwidth Service allows customers to manage their bandwidth requirements according to demand, Bandwidths are available on a 24 hour, scheduled, or on-demand basis. Interfaces offered include 2 & 4 wire analogue interfaces with digital interfaces covering G.703, X.21, X.21bis, V.24, and V.35

SIN 378 Issue 1 - BT MacroNet ™ - Service Description
This Suppliers Information Note (SIN) describes the BT MacroNet service. It provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers, including details on service availability and tariffs, service features and options, service physical interface presentations and approvals related information.

Published 08/02/01


SIN 243 Issue 3 - BT ISDN Services. ISDN International Interworking.

SIN 277 Issue 3 - Impact on Terminal Equipment of Increased Dialled Digit Number Length in the PSTN and ISDN

These SINs have been updated to include the completed changes to the ISDN International Access Code (as part of the National Code & Number Change Programme) and increase of the maximum length of the indirect access prefix from 4 to 5 digits

Published 06/02/01


SIN 259 Issue 1.2 - SecureStream 300 Interface + Signalling Requirements Service Description

Published 29/01/01


SIN 355 Issue 1 -
BT Analogue Private Circuits: Technical Characteristics Of 2-Wire And 4-Wire Analogue Interfaces
This Suppliers' Information Note (SIN) specifies those technical characteristics of 2-Wire & 4-Wire analogue interfaces of Private Circuits provided by BT and delivered to a customer at the Network Termination Point (NTP). This document was previously published as BT Technical Interface Guide 9, the conversion to SIN includes the addition of information relating to the requirement for equipment connected to the metallic loops of the BT Access Network to comply with the Access Network Frequency Plan (ANFP) published by OFTEL. Further to this, information is given regarding the compatibility of DSL technology with the ANFP when deployed in an analogue private circuit environment.

Published 25/01/01


SIN 321 Issue 3.1 - BTnet Dial IP Service Description
The BTnet Dial IP service provides a UK IP VPN ( Virtual Private Network) service offering for customers requiring dial access into their IP networks. This document has been updated to include an extended range of dial access codes, the Gigabit Ethernet Interface and the addition of Packet over SONET using STM 1/4/16

SPIN 049 - BT Ignite Broadband ADSL Availability Checker
The ADSL Availability checker is a web based service provided by BT Ignite Broadband Services for use to determine the availability of ADSL services to an End User. The service allows anyone with Internet access to a request an indication of service availability based on entry of a telephone number or postcode. The service is provided as a generic tool for industry to assist in pre-sales activity and marketing. All requests for service are subject to survey following submission of an order.

Published 17/01/01



SIN 375 Issue 1 - Terminal Equipment Spectral Power Requirements
This Suppliers' Information Note (SIN) advises of the requirement for equipment connected to the metallic loops of the BT Access Network to comply with the Access Network Frequency Plan published by OFTEL.

Published 21/12/00



SIN 302 Issue 1.2 - BT Internet Protocol Transport Services
Suppliers Information Note 302 gives information about BT’s Internet Protocol (IP) Transport Services, which comprises Internet and UK IP VPN (Virtual Private Network) service offerings with dial, fixed and gateway accesses. This issue has the addition of a 1000base Gigabit Ethernet interface as described in SIN360

Published 11/12/00


SPIN 044 - BT IPStream (Withdrawn and replaced with SPIN 048)

Withdrawn 08/12/00


STIN 374 Issue 1 - L2TP Interface For BT IPStream
This Suppliers' Trial Information Note (STIN) describes the characteristics of the L2TP (Layer 2 Tunnelling Protocol) Interface available for BT IPStream only.

SPIN 048 - BT IPStream - Withdrawn and replaced by SPIN 052 - 11/5/01
BT has introduced a portfolio of Broadband ADSL based high speed data services. This Service Provider Industry Notification (SPIN) replaces SPIN 044 and provides information about the BT IPStream element of the Broadband portfolio.

SIN 329 Issue 5.2 - BT Broadband IP Products - Service Description
This Suppliers' Information Note (SIN) gives service description information about BT Central, BT IPStream S500/S1000/S2000 and BT IPStream 500, which form part of BT's Internet Protocol (IP) Transport Services portfolio (SIN 302). This version has been issued to provide further information.

Published 8/12/00


SIN 359 Issue 1 - BT TextDirectÔ Service Description
This SIN describes the BT TextDirect service that is provided for PSTN customers who need to use textphones because of their disabilities.

Published 30/11/00


SIN 373 Issue 1 - BT High Bandwidth Service (DWDM) 1 - Service Description
The HBS1 service operates at speeds between 100 Mbit/s and 1.25 Gbit/s utilising dense wave division multiplexing at a network level; it offers an 8 channel system at a route distance of up to 25km between customers sites. The channel interfaces will be able to carry the following protocols; Fibre Channel, Gigabit Ethernet, ATM 155 & 622, ESCON and a Sysplex Timing Coupling facility.

Published 29/11/00


SIN 368 Issue 1 - Index of Protocol Implementation Conformance Statements (PICS) for ISDN 2e and ISDN 30e Customer Interfaces

SIN 369 - Issue 1 Protocol Implementation Conformance Statements (PICS) for ISDN 2e and ISDN 30e Customer Interfaces Basic Call Control & Basic Services (Parts A - I)

SIN 370 Issue 1 - Protocol Implementation Conformance Statements (PICS) for ISDN 2e and ISDN 30e Customer Interfaces Digital Select Services (Parts A - M)
As stated in SIN 261, the BT ISDN 2e and ISDN 30e services are implemented in conformance with the relevant ETSI standards. The ETSI standards for the ISDN user-network interface include PICS (Protocol Implementation Conformance Statements). PICS are a formal method of defining an implementation against a given standard. SINs 368 -370 provide the completed PICS (Protocol Implementation Conformance Statement) as standardised by ETSI for BT's ISDN 2e and 30e services.

SIN 261 Issue 4.3 - BT ISDN 2e and ISDN 30e (I.421) Service using full ETSI Call Control Service Description.
SIN 261 has been updated to refer out to the recently published SINs 368 - 370 that provide the completed ISDN PICS (Protocol Implementation Conformance Statement). It also provides an update on the status of the planned Digital Select Services Advice of Charge and Presentation Number.

SIN 275 Issue 2 - Lowband Digital Access Service Description
SIN 275 has been updated to refer out to the recently published SINs 368 - 370 that provide the completed ISDN PICS (Protocol Implementation Conformance Statement). It also provides an updated list of PSTN Select Services available.

SIN 312 Issue 1.3 - BT ISDN Services Overview
SIN 312 has been updated to refer out to the recently published SINs 368 - 370 that provide the completed ISDN PICS (Protocol Implementation Conformance Statement).

Published 16/11/00


SIN 367 Characteristics of the BT Network: Electrical Safety and EMC
This Suppliers' Information Note (SIN) describes the electrical safety and EMC characteristics of the interfaces of BT’s fixed telecommunications network as presented to customers at the Network Termination Point (NTP).

Published 31/10/00


SIN 306 BT VideoStream & BT DataStream S (Service Provider) Services - Service Description And Interface Specification
BT DataStreamS enables a SP, OLOs (including BT’s internal Service providers and large customers), and Corporate Businesses to access multiple End Users via an ATM-based data network. BT DataStreamS is targeted at SPs, OLOs and Corporate Businesses who are looking to develop their own Layer 3 transport services over the native ATM. The Customer defines the application(s) they wish to sell and this defines the network delivery service.

SIN 347 BT DataStream Office & BT DataStream Home (Service Provider) Services Service Description And Interface Specification
BT DataStream enables a Customer to access multiple End Users via an ATM-based data network. BT DataStream is targeted at Customers who are looking to develop their own Layer 3 transport services over the native ATM. The Customer defines the application(s) they wish to sell based on the DataStream network delivery service.

SIN 366 BT VideoStream Plus (Service Provider) Services Service Description And Interface Specification
The BT VideoStream Plus Service is aimed at Independent Service Providers and Other Licensed Operators (including BT’s internal service provider and large customers), with a network service to support multi-media content services, including video based services delivered to the TV Set Top Box (e.g. Video On Demand) and data services (e.g. internet access)

SPIN 046 BT DataStream Office & BT DataStream Home
BT is introducing a portfolio of ADSL-based high-speed data services. This Service Provider Industry Notification (SPIN) provides information about two new services that from part of the evolution of the BT DataStream portfolio. The working names for these new services are BT DataStream Office and BT DataStream Home.

SPIN 047 BT VideoStream Plus
BT has introduced a portfolio of ADSL-based high-speed data services. This Service Provider Industry Notification (SPIN) provides information about a new service that forms part of the evolution of the BT VideoStream portfolio. The working name for the new service is BT VideoStream Plus. This is additional to the launched BT VideoStream Service.

Published 23/10/00


SPIN 045 - Calls & Access Digital Trial
This SPIN provides notification of a trial of a digital "calls & Access" product. This will provide calls & access variants of BT ISDN2e, BT Business Highway and BT Home Highway.

SIN 372 Issue 1 - Access Codes (1xx(xx) codes) and the Impact on Terminal Equipment (TE)
Over recent years the number of 1xx(xx) codes used within the UK has increased significantly. As these codes are now largely used to allow access for chargeable purposes, e.g. access to Other Licensed Operators (OLO) networks. It is important that TE (terminal equipment) should correctly support these prefixes.

Published 19/10/00 ( SPIN 045 Withdrawn - 16/07/01 and replaced by SPIN 055 - 06/07/01)


SIN 357 Issue 2.0 - BT FeatureNet * Service: Technical Characteristics Of The Interfaces
This Suppliers' Information Note (SIN) specifies the technical characteristics at the Network Termination Point (NTP) of the interfaces for BT’s FeatureNet service.

Published 06/10/00


SPIN 044 - BT IPStream (Withdrawn and replaced with SPIN 048 - 8 December)
This Service Provider Industry Notification (SPIN) replaces SPIN 029 and provides
information about the BT IPStream products that are planned to use ADSL.

Published 26/09/00


SIN 313 Issue 2 - Flexinumber (formerly Onenumber Automatic Update Facility)
SIN 342 Issue 1 - BT Flexinumber - Withdrawal Notification

Withdrawn 11/10/00


SIN 363 Issue 1 - BT ISDN30 (DASS) SWAP - Changes to use of an existing network service.
The ISDN 30 service, based on DASS 2 implements a procedure of the DASS 2 General Signalling Procedures called Swap. With the introduction of Asynchronous Transfer Mode (ATM) switching technology as outlined in SIN 365, this particular procedure will require a different approach by users.

SIN 365 Issue 1 - Introduction of ATM Infrastructure Technical information for suppliers
BT plans to start introducing, from 1 September 2001, into its national network a new generation network-switching infrastructure implementing Asynchronous Transfer Mode (ATM) switching technology. This document gives an overview of this change to the BT core network.

Published 15/09/00


SIN 225 Issue 2.2 BT ISDNconnect Service Description
The BT ISDNconnect Service provides packet mode interconnection of a customer (who may typically be a Value Added Service Supplier or a packet switched data network operator) to its users by means of permanent logical links (PLL). This issue is extended to cover automatic "standby SAL" restoration and minor editorial changes.

Published 04/09/00


SPIN 032 - BT VideoStream & BT DataStream

Withdrawn 08/09/00


SIN 269 - Withdrawal of Meter Pulse Facility, Update

SIN 244 - Withdrawal Of Subscriber Meter Pulse Facility

Withdrawn 04/08/00


SIN 264 - BT CellStream ™ Service Description
The BT CellStream service supports the Broadband Integrated Services Digital Network (B-ISDN) platform, using a combination of Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) transport mechanisms for the transport of Asynchronous Transfer Mode (ATM) cells.

This latest issue announces the introduction of a 622 Mbit/s interface to the CellStream service with a planned launch date of November 2000.

Published 24/08/00


SPIN 027 - Service Provider Anonymous Call Rejection (ACR)
SPIN 025 - Schools Internet Caller and Public Institutions Internet Caller
SPIN 024 - UK National Code and Number Change Impact on Call Mapping Interface
SPIN 021 - Calls & Access; Choose To Refuse Product Information
SPIN 019 - Service Providers - A new retail chargeband for access to multi-media services
SPIN 018 - Calls and Access Product Information - A new retail chargeband for access to multimedia services

Withdrawn 18/08/00


SIN 346 BT ADSL Interface Description
This supplier information note (SIN) describes the interface presented at the end of an ADSL line at the end customer premises.

Published 07/08/00


SPIN043 - Schools Internet Caller and Public Institutions Internet Caller
Following discussions with Oftel the definitions for Schools Internet Caller (Learning Stream) and Public Institutions Internet Caller is to be extended to include Learning Centres.

Published 01/08/00


SIN 349 - BT Metallic Path Facility Interface Description
This SIN provides the technical description of the Metallic Path Facility that BT will be providing under its new Licence Condition 83 (concerning local loop unbundling).

Published 31/07/00


SIN 265 Issue 2 - BT MediaNet 155 & BT MediaNet 34 Service Description
BT MediaNet 15 has been renamed BT MediaNet 155. The BT MediaNet 155 and BT MediaNet 34 services provide for multiple service delivery for the transport of video, audio, and associated multimedia services between customer premises. It should be noted that the customers technical interface characteristics are unchanged from the previous version of this SIN.

Published 28/07/00


SIN 311 - Issue 2 BT LAN EXTENSION SERVICE 100 Enhanced Service Description
This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 100 Enhanced (LES 100E). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers.

SIN 348 Issue 1 - Continuation of BT METER PULSE FACILITY (MPF) Information for Suppliers
This Suppliers Information Note (SIN) announces BT's decision not to withdraw MPF.

Published 26/07/00


SIN 357 Issue 1 - BT FeatureNet™* Service:Technical Characteristics Of The Interfaces
SIN 357 describes the technical characteristics of the interfaces for the BT FeatureNet service. This information was previously published as TIG 11 issue 5.0 and TIG 12 issue 1.0 but these documents have now been combined and re-issued as SIN 357. In Annex A of the SIN, previously published in TIG 11, the table entry for Executive Intrusion has been changed to "Compliant" for PBX to FeatureNet and FeatureNet to PBX

Published 25/07/00


SIN 360 Issue 1 - Gigabit Ethernet for the BT Network - Interface Characteristics
SIN 360 describes the characteristics of the GigaBit Ethernet Interface used in the BT Network. The GigaBit Ethernet Interface conforms to IEEE 802.3z, and implements the SX and LX options.

Published 21/07/00


SIN 345 Issue 1 - BT Channel Extension Service 1000 - Service Description
This Suppliers Information Note (SIN) describes the BT Storage Area Network (SAN) Fibre Channel Extension Service 1000 (CES 1000). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers.

SIN 338 Issue 1.1 - BT LAN Extension Service 1000 - Service Description
This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 1000 (LES 1000). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers. This issue contains minor editorial clarification.

Published 29/06/00


SIN 218 Issue 2 - BT MegaStream 34 and MegaStream Aggregate - Service Description
This Suppliers' Information Note (SIN) describes the BT MegaStream 34 and MegaStream 34 Aggregate services and provides technical information for terminal
equipment (TE) manufacturers and suppliers.

SIN 261 Issue 4.2 - BT ISDN 2e and ISDN 30e (ISDN30 (I.421) SERVICE using full ETSI Call Control.
This SIN describes the BT ISDN 2e and ISDN 30e ETSI services. ISDN 30e has previously been referred to as ISDN 30(I421) and has been re-branded for new
installations on the full ETSI call control platform. In order to help ensure maximum interoperability between terminal equipment and the BT service, considerable
technical detail has been included in this document. This issue contains minor editorial updates.

Published 19/06/00


SIN 344 Issue 1 - BT Multipoint Analogue Service - Withdrawal Notification
This SIN communicates BT's plan for the withdrawal of Analogue Multipoint service

SIN 316 Issue 4.1 - Enhanced Digital Value Call Access - Service Description
This SIN describes the Enhanced Digital Value Call Access service for Service Providers and Customer Premises Equipment (CPE) manufacturers and developers.

Published 13/06/00


SPIN 041 -BT Broadband Services: Overview of the System-System Interface for Broadband Ordering
The purpose of this briefing is to outline BT’s plans for the introduction of a system-system interface for BT Broadband products based on the passing of files in Extended Markup Language (XML).

Published 02/06/00


SPIN 042 -Calls & Access Product Briefing: Call Minder
The purpose of this briefing is to inform Service Providers of the changes to Call Minder and the Call Minder Plus service.

Published 02/06/00


SIN 297 Issue 3 - BT FeatureLine Service Description
FeatureLine is a service provided from BT’s public exchanges that offers customers facilities similar to those of a small Private Branch Exchange (PBX), but without the need for the customer to have switching hardware on their premises. This SIN has been re-issued to include access from Business Highway.

Published 26/05/00


SIN 329 Issue 5.1 -BT Broadband IP Products - Service description
This Suppliers' Information Note (SIN) gives service description information about BT Central, BT IPStream S500/S1000/S2000 and BT IPStream 500, which form part of BT's Internet Protocol (IP) Transport Services portfolio (SIN 302). This version has been issued to provide further information.

Published 31/05/00


SIN 324 Issue 3 - BT FeatureNet Embark Service Description
FeatureNet Embark enables customers with both large and very small sites to link together into a corporate telephone network, giving the benefit of a private network. This service is available on a national basis. This SIN has been re-issued to include access from Business Highway.

Published 26/05/00


SPIN 040 - Automated Engaged Line Assistance Service - LAUNCH POSTPONED
This Suppliers' Information Note communicates that the Automated Engaged Line Assistance Service's launch has been postponed. (Replaces SPIN 039)

SPIN 039 - Automated Engaged Line Assistance Service - WITHDRAWN
This Suppliers' Information Note has been withdrawn and replaced by SPIN 040

Published 17/05/00


SIN 342 -BT Flexinumber Withdrawal Notification
This Suppliers' Information Note communicates BT's plan for the withdrawal of the BT Flexinumber service originally described in SIN 313.

Published 02/05/00


SIN 329 - BT Broadband IP Products - Service description
This Suppliers' Information Note (SIN) gives service description information about BT Central, BT IPStream S500/S1000/S2000 and BT IPStream 500, which form part of BT's Internet Protocol (IP) Transport Services portfolio (SIN 302).

Published 27/04/00


SIN 325 - Compliance of Terminal Equipment
This Suppliers Information Note (SIN) gives reference information about the compliance of terminal equipment intended for connection to BT Networks.

Published 19/04/00


SPIN 039 - Automated Engaged Line Assistance Service
The purpose of this document is to inform Calls & Access Service Providers of the launch of the Automated Engaged Line Assistance Service on the 16th of May 2000.

The following SPIN has been withdrawn.
SPIN 038 - Automated Engaged Line Assistance Service - Replaced by SPIN 039.

The following SPINs have reached their expiry date.
SPIN 016 Calls and Access Product Information - A change on the Electronic Gateway

SPIN 015 Request for indication of interest in a Trial by BT Inbound Services of a Service Provider offering of its Telemarketing Services

SPIN 014 Send & Deliver - Withdrawal of Service

Published 17/04/00


SIN 339 - BT Textphone Service
This Suppliers Information Note (SIN 339) gives information about the BT Textphone Service to be provided over the BT PSTN and ISDN.

Published 13/04/00


SIN 321 Issue 3 - BTnet Dial IP
The BTnet Dial IP service provides a UK IP VPN ( Virtual Private Network) service offering for customers requiring dial access into their IP networks. This document has been up-issued with amended RADIUS support information.

SIN 328 Issue 2 - BT ISPnet
The ISPNet Standard Access service is designed to provide a complete Internet Access Service package for use by Internet Service Providers (ISP), Virtual ISPs and BT’s Supplemental Systems Business (SSB). This document has been up-issued with amended RADIUS support information.

SPIN 038 - Automated Engaged Line Assistance Service (WITHDRAWN 17/04/00 Replaced by SPIN 039)
The purpose of this document is to inform Calls & Access Service Providers of the launch of the Automated Engaged Line Assistance Service on the 2nd of May 2000.

Published 07/04/00


SPIN 037 - Calls & Access Total Care and Calls & Access Prompt Care, Enhanced Maintenance products
The purpose of this document is to inform Calls & Access Service Providers of the launch of two Enhanced Maintenance products: Calls & Access Total Care and Calls & Access Prompt Care which will be made available from the 30th April 2000.

Published 05/04/00


SPIN 036 - Multi-Line/Digital Product
This SPIN contains Multi-Line/Digital trial information.

SPIN 035 - Calls & Access Information; per second pricing for operator assistance
This SPIN describes changes to the charging structure for calls connected via the 100 (inland) and 155 (International) level operator.

SPIN 034 -Service Provider 1471 Extra
The purpose of this document is to inform Service Providers of the launch of the 1471 Extra service. The service will be made available for Service Providers as a part of the Calls & Access product on 31st March 2000. This SPIN replaces SPIN 028 and includes clarification of quarterly rental prices.

Published 31/03/00


SIN 341 - BT RedCARE Key Message
SIN 341describes the BT RedCARE Key Message Service that allows alarm information to be transmitted to mobile phones using SMS messaging or alpha numeric pagers.

Published 29/03/00


SPIN 033 - Calls and Access Product Information
SPIN 033 is being issued to outline to Service Providers how they will be impacted by the change to the UK numbering system from the changeover day on 22 April 2000.

Published 24/03/00


SIN 306 Issue 3.1 - BT VideoStream & BT DataStream (Service Provider) Services - Service Description And Interface Specification

Issue 3.1 has been updated to reflect revised VP numbers.
This Supplier's Information Note (SIN) describes the BT VideoStream & BT DataStream Services and provides information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs), Corporate Businesses, Customer Premises Equipment (CPE) manufacturers and developers.

Published 07/03/00


SPIN 032 -BT VideoStream & BT DataStream
SPIN 032 is being issued to replace SPIN 030 (See History below).
BT plans to introduce a portfolio of ADSL-based high-speed data services. This Service Provider Industry Notification (SPIN) replaces SPIN 030 and provides additional information about BT VideoStream and BT DataStream.
SPIN 032 - 7/3/00 (replaces SPIN 030)
SPIN 030 - 22/2/00 (replaces SPIN 023)
SPIN 023 - 1/12/99 (replaces SPIN 013)
SPIN 013 - 17/9/99

Published 07/03/00


SIN 338 - BT LAN Extension Service 1000 - Service Description
This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 1000 (LES 1000) offering an 1000baseT 802.3 Gigabit interface. The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers.

Published 06/03/00


SIN 340 - BT MediaNet 2000 & BT MediaNet 2000 Lite Service Description
This Suppliers' Information Note (SIN) describes the BT MediaNet 2000 and BT MediaNet 200 Lite services. It provides technical information for use by Customer Premises Equipment (CPE) manufacturers, suppliers and developers.

Published 03/03/00


SIN 290 - BT MusicLine One - Service Description
This service provides a mono audio circuit with a nominal bandwidth of 20Hz to 7.5kHz and a loss/frequency response of:- ±1.0dB across the frequency range. Typical uses would be high quality speech contribution and AM/ MW transmitter feeds. Issue 2 contains changes to maximum signal levels which have been increased from +9dBm to +18dBu.

Published 29/02/00


SPIN 029 - BT IPStream This SPIN replaces SPIN022 which has been withdrawn.

SPIN 030 - BT VideoStream and BT DataStream This SPIN replaces SPIN023 which has been withdrawn.

SIN 306 Issue 3 - BT VideoStream and BT DataStream This Supplier's Information Note (SIN) describes the BT VideoStream & BT DataStream Services and provides information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs), Corporate Businesses, Customer Premises Equipment (CPE) manufacturers and developers.

SIN 329 Issue 4 - BT Broadband and IP Products This Suppliers' Information Note (SIN) gives service description information about BT Central, BT IPStream S500/S1000/S2000 and IPStream 500, which form part of BT's Internet Protocol (IP) Transport Services portfolio (SIN 302). This SIN should be read in conjunction with SIN302, and SIN 336 detailing BT's USB interface.

Published 22/02/00


SPIN 028 - Service Provider 1471 Extra - WITHDRAWN (Replaced by SPIN 034)
The purpose of this document is to inform Service Providers of the launch of the 1471 Extra service. The service will be made available for Service Providers as a part of the Calls & Access product on 31st March 2000.

Withdrawn 21/02/00


Search Facility
To help you find the SIN you need more easily we have introduced a search facility. Thanks to all of you who provided feedback suggesting this development. You will also find the SIN Index is now in numerical order instead of the previous categories. These were becoming increasingly inaccurate with the evolution of new technologies and the convergence of existing services. To make life a little simpler we have introduced a 'key word' search which lists SINs in one or more groups. We would welcome any comments and suggestions for improving the search facility.

17/02/00


The following SPIN has been withdrawn.
SPIN 026 - Service Provider Anonymous Call Rejection (ACR) - Replaced by SPIN 027.

The following SPINs have reached their expiry date.
SPIN 011 - Prompted Ring Back.
SPIN 010 - Service Provider Call Sign.
SPIN 009 - Calls and Access Product Information.

Published 11/02/00


SPIN 027 -Service Provider Anonymous Call Rejection (ACR)
The purpose of this document is to inform Service Providers of the launch of the ACR product. The service will be made available for Service Providers as a Calls & Access product on 1st March 2000. It replaces SPIN 026.

Published 11/02/00


SIN 350 - BT Public Switched Telephone Network (PSTN): Network Tones And Announcements
This document describes the supervisory tones generated by the BT network and gives general information about BT network announcements. This information was previously published in TIG 8 and is now being re-published in the SIN series.

Published 07/02/00


The following SINs have been withdrawn because the Telemetry service is no longer offered.
SIN 263 BT Managed Telemetry Service.
SIN 276 BT Managed Telemetry service marketed as MeterLink - withdrawal of an existing network service.
SIN 236 BT Telemetry Service For Automatic Meter Reading (AMR) Service Description.
SIN 237 BT Telemetry Service For Automatic Meter Reading (AMR) Design Guide.

Published 03/02/00


TIG 7 Issue 7 - Public Switched Telephone Network (PSTN): Technical Characteristics of the Supplementary Services available on the Analogue Line Interface.
This TIG specifies those Technical Characteristics of the supplementary services available on an analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT, delivered to a customer at the Network termination Point (NTP). Issue 7 contains changes to Homemover Redirect, renamed Mover Redirect and description amended. Amended dates for introduction of Choose to Refuse, Anonymous Call Rejection and Enhanced Caller Return.

Published 02/02/00


SIN 261 issue 4.1 - BT ISDN 2e and ISDN 30e (ISDN30 (I.421) SERVICE using full ETSI Call Control
This SIN describes the BT ISDN 2e and ISDN 30e ETSI services. ISDN 30e has previously been referred to as ISDN 30(I421) and has been re-branded for new installations on the full ETSI call control platform. In order to help ensure maximum interoperability between terminal equipment and the BT service, considerable technical detail has been included in this document. In this issue editorial changes have been made throughout, including the re-branding of supplementary services to "Digital Select Services".

Published 01/02/00


SPIN 025 Schools Internet Caller and Public Institutions Internet Caller
The Schools Internet Caller product provides Schools in the UK with cheap and affordable access to the Internet. Following Oftel's request this service has been extended to include availability to public institutions (Libraries, Further Education Colleges and Citizen's Advice Bureaux). This SPIN replaces SIN 305.

Published 13/01/00


SPIN 026 Service Provider Anonymous Call Rejection (ACR)
The purpose of this document is to inform Service Providers of the launch of the ACR product.

Published 13/01/00


SIN 305 - Schools Internet Caller Service - Service Providers Information Note - WITHDRAWN

Withdrawn 13/01/00


TIG 11 Issue 5 BT FeatureNet™* Service: Technical Characteristics Of The Non-ISDN Interfaces
This Technical Interface Guide (TIG) specifies the technical characteristics at the Network Termination Point (NTP) for the non-ISDN interfaces providing voice telephony on BT's FeatureNet service.

Published 23/12/99


SIN 331 Issue 1 BT 50 Baud Telex Service: Technical Characteristics of the Interface
This Suppliers' Information Note (SIN) describes the BT Telex service at a data rate of 50 Baud (Bd).

Published 23/12/99


SIN 171 Issue 8.2 BT ISDN 2 (Using limited ETSI Call Control) - Service Description
This Suppliers Information Note (SIN) describes the "BT ISDN 2" service (I.420 Basic User-Network Interface) which is supported on the limited ETSI call control platform. It is intended to provide general information about the service for apparatus manufacturers and developers.

Published 23/12/99


SIN 277 Issue 2.1 Impact on Terminal Equipment of changes to the dialled digit number in the public PSTN and ISDN
Issue 1 of this SIN was published to raise awareness of the potential increase to the maximum dialled digit number length and the resulting potential impact on CPE. (The increase in dialled digit length resulted from international and national agreements on international and indirect access prefix digits respectively.) This issue of the SIN has been published to take account of the impact of the UK National Code and Number Change that is taking place over the next 2 years.

Published 22/12/99


SIN 312 Issue 1.2 BT ISDN SERVICES OVERVIEW
A number of ISDN related SINs have been published since BT launched it’s first ISDN service and the purpose of this SIN is to provide an overview of BT's ISDN services and index the SINs related to them.

Published 20/12/99


SIN 275 Issue 1.1 BT Highway - BTs Lowband Digital Access Service Service Description
This Suppliers' Information Note has been prepared to give technical information about "BT Highway", BT's Lowband Digital Access Service.

Published 20/12/99


SIN 243 Issue 2.1 BT ISDN SERVICES. ISDN INTERNATIONAL INTERWORKING
The purpose of this Suppliers’ Information Note (SIN) is to provide Customer Premises Equipment (CPE) suppliers and manufacturers with information specific to international interworking between BT’s ISDN services and overseas ISDNs.

Published 20/12/99


SIN 232 Issue 4.2 BT ISDN 30 (I.421) - SERVICE (Using limited ETSI Call Control) SERVICE DESCRIPTION
This Suppliers Information Note (SIN) describes the BT ISDN 30 (I.421) Service supported on the limited ETSI call control platform, (CCITT Recommendation I.421 User-Network Interface). It is intended to provide general information about the service for Customer Premises Equipment (CPE) manufacturers and developers.

Published 20/12/99


SPIN 024 UK National Code and Number Change Impact on Call Mapping Interface
Call Mapping enables Service Provider's to offer a voice messaging service to BT customers and this must be compliant with the new number code changes coming into effect.

Published 17/12/99


SIN 332 Issue 1 -BT Broadcast Services, Audio Broadcast Network - Service Description
This Suppliers' Information Note (SIN) describes the Audio Broadcast Network service which is an aggregated service based upon the BT MusicLine One and BT MusicLine 2000 services. MusicLine 2000 interfaces are used to provide the contribution elements of the service, and MusicLine One interfaces are used to provide the distribution elements of the service. The nominal end-to-end bandwidth of the service is 20 Hz to 7.5 kHz.

Published 02/12/99


SIN 287 Issue 1.1 - BT Call Mapping Service - Service Description
This Suppliers' Information Note (SIN) describes the BT Call Mapping Service that is available to third party service providers. Issue 1.1 includes editorial changes to phone numbers and contact details.

Published 02/12/99


SPIN 023 - BT VideoStream & BT DataStream
This Service Provider Industry Notification (SPIN) replaces SPIN 013 and provides additional information about BT VideoStream and BT DataStream.

Published 01/12/99


SPIN 022 - BT IPStream
This Service Provider Industry Notification (SPIN) replaces SPIN 012 and provides additional information about the BT IPStream products that are planned to use ADSL.

Published 01/12/99


SIN 329 Issue 3 - BT Broadband IP Products
This Suppliers' Information Note (SIN) gives service description information about BT IPStream Central, BT IPStream S500/S1000/S2000 and IPStream 500, which form part of BT's Internet Protocol (IP) Transport Services portfolio .
The BT IPStream S Series of products provides up to approximately 20:1 contended ADSL connection from the Customer's End User to BT's High Speed Data Network.
The BT IPStream 500 product provides up to approximately 50:1 contended ADSL connection from the Customer's End User to BT's High Speed Data Network.
The BT IPStream Central product provides a connection from the BT Network to the Customer and is a necessary component for the end to end connection of BT IPStream S Series or IPStream 500 product to the customer.

Published 01/12/99


SIN 306 Issue 2 -BT VideoStream & BT DataStream Services
The BT VideoStream Service is aimed at Independent Service Providers and Other Licensed Operators (including BT's internal service provider and large customers) with a network service to support video based multi-media content services delivered to the TV e.g. Video On Demand.
BT DataStream enables a SP, OLOs (including BT's internal Service provider and large customers) to access multiple End Users via an ATM-based data network. BT DataStream is targeted at SPs and OLOs who are looking to develop their own Layer 3 transport services over the native ATM.

Published 01/12/99


SIN 336 Issue 1 - Universal Serial Bus (USB) Interface to the BT Network
This Suppliers' Information Note (SIN) describes the characteristics of the Universal Serial Bus (USB) Interface to the BT Network. The USB Interface conforms to USB Specification Revision 1.1. Other SINs contain details of services delivered over the USB interface.

Published 01/12/99


SIN 112 Issue 2 - BT procedure for Consulting & Giving Advance Notice of Alterations to Applicable Systems - WITHDRAWN

SIN 330 - BT Highway S500/S1000/S2000 and Central Service Description - WITHDRAWN

Withdrawn November 99


TIG 11 Issue 4 - BT FeatureNet™* Service: Technical Characteristics Of The Non-ISDN Interfaces
This Technical Interface Guide (TIG) specifies the technical characteristics at the Network Termination Point (NTP) for the non-ISDN interfaces providing voice telephony on BT's FeatureNet service. Issue 4 has the addition of TCP/IP interface and VoiceButton facility.

Published 30/11/99


SIN 337 Issue 1 - BT MegaStream 622 and BT MegaStream Aggregate (STM4) Service Description
This Suppliers' Information Note (SIN) describes the BT MegaStream 622 and MegaStream Aggregate (STM4) services and provides technical information for terminal equipment (TE) manufacturers and suppliers. It should be read in conjunction with SIN333, SDH Customer Interfaces At the STM-N level (where N=1,4,16).

Published 23/11/99


TIG 11 Issue 3 - BT FeatureNet™* Service: Technical Characteristics Of The Non-ISDN Interfaces
This Technical Interface Guide (TIG) specifies the technical characteristics at the Network Termination Point (NTP) for the non-ISDN interfaces providing voice telephony on BT's FeatureNet service. This issue includes the addition of Caller Return and extra code for Ring Back in dial plan.

Published 19/11/99


SIN 321 Issue 2 - BTnet Dial IP - Service Description
This Suppliers' Information Note (SIN) gives information about BT’s BTnet Dial IP service, part of BT’s Internet Protocol (IP) Transport Services portfolio. Issue 2 introduces two new service packages, MAP adjacency and IPSPAN. In addition, there is a new fixed connection option for delivery to the customer’s network delivered via a WAN presentation: ATM over SDH.

Published 11/11/99


About this Site and FAQs - have been updated to reflect the new BT Licence.

Published 10/11/99


SIN 333 Issue 1 - SDH Customer Interfaces at the STM-N level (where N=1,4,16) Interface Characteristics.
This Suppliers' Information Note (SIN) describes the characteristics of SDH customer interfaces to the BT Network at the STM-N level (where N=1,4,16) to support VC-12, VC-3 and VC-4 (2Mbit/s, 34Mbit/s and 140Mbit/s) payloads.

Published 05/11/99


SIN 289 Issue 2.1 - BT Megastream 155 & BT Megastream Aggregate.
This Suppliers' Information Note (SIN) describes the BT MegaStream 155 and MegaStream Aggregate services and provides technical information for terminal equipment (TE) manufacturers and suppliers. It should be read in conjunction with SIN 333, SDH Customer Interfaces at the STM-N level (where N=1,4,16).

Published 05/11/99


SPIN 021 - Calls & Access; Choose to refuse product information.
This SPIN informs Service Providers of the launch of a new product "BT Choose To Refuse". This is a new service, which enables users to bar the telephone number of the last answered incoming call.

Published 05/11/99


SPIN 020 - Calls & Access; Changes to the Service Provider Gateway Screens.
This SPIN covers changes/amendments to the SP Gateway system to enable SP's End Users to manage these services.

Published 05/11/99


SPIN 019 - Service Providers - A new retail chargeband for access to multi-media services.
The purpose of this Service Providers Information Note (SPIN) is to advise of new service provider payment applicable to e-mail usage.

Published 03/11/99


SPIN 018 - Calls & Access; new retail chargeband for access to multimedia services.
The purpose of this Service Providers Information Note (SPIN) is to inform Service Providers of the launch of a new number range on a new retail chargeband.

Published 03/11/99


SIN 316 Issue 4 -BT Enhanced Digital Value Call Access Service Description
This Service Information Note (SIN) describes the Enhanced Digital Value Call Access service. It is intended to provide general information about the service for Service Providers and Customer Premises Equipment (CPE) manufacturers and developers. As explained in Annex D, this SIN provides a correction to the Call Progress Information Codes used in the Enhanced Mid Call Diversion (EMCD) service.

Published
15/10/99


SIN 328 Issue 1 - BT ISPnet
The ISPnet service is offered to Internet Service Providers and other customers requiring provision of end user dial access to the Internet and to a host site containing the customer’s applications services.

Published
13/10/99


SIN 321 Issue 1 - BTnet Dial IP Service Description
The BTnet Dial IP service is a UK IP VPN (Virtual Private Network) service offering for customers requiring dial access into their IP networks.

Published 13/10/99


SPIN 016 - Calls and Access Product Information - A change on the Electronic Gateway
The purpose of this document is to inform Service Providers who take Calls and Access products from BT, of a change on the electronic Gateway.

Published 05/10/99



SIN 161 Issue 4 - BT LAN Extension Service 3 - Service Description
This SIN describes the BT Local Area Network (LAN) Extension Service 3 (LES 3). This service enables a customer to interconnect two or more IEEE 802.5 Token Ring LANs.

Published 01/10/99


TIG 7 Issue 6 - Public Switched Telephone Network Technical Characteristics Of The Supplementary Services available on the Analogue Line Interface
This Technical Interface Guide (TIG) specifies those technical characteristics of the Supplementary Services available on an analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT, delivered to a customer at the Network Termination Point (NTP). This issue includes an amended description of Choose to Refuse service.

Published 30/09/99


SIN 196 Issue 2 - LAN Interconnection Trial Service No.1 Description - WITHDRAWN
SIN 163 Issue 2 - Data Extension Service No.1 - Description - WITHDRAWN
SIN 165 Issue 2 - Data Extension Service No.2 - Description - WITHDRAWN
SIN 167 Issue 2 - Data Extension Service No.3 - Description - WITHDRAWN

Published September 99


SPIN 015 - Request for indication of interest in a Trial by BT Inbound Services of a Service Provider offering of its Telemarketing Services.
This document advises of a forthcoming trial by BT Inbound Services of a Service Provider offering of its Telemarketing Services.

Published 23/09/99



SPIN 013 Issue 3 - BT's Broadband ATM transport products: BT VideoStream & BT DataStream
BT recently outlined its roll out plan for ADSL based services. This Service Provider Industry Notification (SPIN) provides information about the launch of new products using BT's Broadband ATM Transport Services.

Published 17/09/99



SPIN 014 Send & Deliver - Withdrawal of Service
The purpose of this document is to advise service providers of the withdrawal of the Send & Deliver service.

Published 17/09/99



SIN 225 Issue 2.1 BT ISDNconnect Service Description
The BT ISDNconnect Service provides packet mode interconnection of a customer (who may typically be a Value Added Service Supplier or a packet switched data network operator) to its users by means of permanent logical links (PLL). This issue provides greater clarification on various issues and minor editorial changes throughout.

Published 16/09/99


SIN 322 Issue 1 EC Service Description
This Suppliers Information Note (SIN) describes the BT "EC" Service. It provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers. EC will provide flexible network services via a managed core infrastructure that will support integration of customers' data and voice traffic via virtual connections.

Published 01/09/99


SPIN 013 Issue 2 BT's Broadband ATM Transport Products: BT VideoStream & BT DataStream
BT recently outlined its roll out plan for ADSL based services. This Service Provider Industry Notification (SPIN) provides information about the launch of new products using BT's Broadband ATM Transport Services. Issue 2 includes further information and trial prices.

Published 24/08/99


SPIN 012 Issue 2 BT IPStream
BT recently outlined its roll out plan for ADSL based services. This Service Provider Industry Notification (SPIN) provides information about BT IPStream.
Issue 2 includes further information and trial prices.

Published 24/08/99


SIN 330 Issue 1 BT Highway S500/S1000/S2000 and Central Service Description
In July 1999, BT outlined its rollout plans for ADSL based high speed data services. This Suppliers’ Information Note (SIN) provides information about BT Highway S500/S1000/S2000.

Published 24/08/99


SIN 329 Issue 2 BT Broadband IP Products - Interface Specification
This Suppliers’ Information Note (SIN) gives interface information about BT IPStream and BT Highway S500/S1000/S2000, part of BT’s Internet Protocol (IP) Transport Services portfolio (SIN no. 302). Issue 2 includes the interface description for BT Highway S500/S1000/S2000 and Central

Published 24/08/99


SIN 264 Issue 5 BT CellStream - Service Description
The BT CellStream service supports the Broadband Integrated Services Digital Network (B-ISDN) platform, using a combination of Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) transport mechanisms for the transport of Asynchronous Transfer Mode (ATM) cells.

Published 16/08/99


SIN 311 Issue 1 BT LAN Extension Service 100 - Service Description.
This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 100 (LES 100). This SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers.

Published 16/08/99


SIN 306 Issue 1.1 BT VideoStream & BT Datastream (Service Provider) Services - Service Description and Interface Specification
This Suppliers Information Note (SIN) describes the BT VideoStream & BT DataStream Services and provides information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs), Customer Premises Equipment (CPE) manufacturers and developers. This issue includes addition of ADSL Helpdesk number in section 2.3.

Published 16/08/99


SIN 329 Issue 1.1 BT IPStream Service Provider
This Suppliers' Information Note (SIN) gives information about BT IPStream, part of BT's Internet Protocol (IP) Transport Services portfolio ( SIN no. 302 ). This SIN should be read in conjunction with SIN 302. This issue includes an amendment to the contact Information in sections 2 & 3.

Published 16/08/99


SIN 284 Issue 1 BT RedCARE Service Description and Attachment Requirements
This Suppliers Information Note (SIN) gives information about the BT RedCARE Service which is provided from a Protected Premises over the BT analogue local access network and the BT RedCARE network to an Alarm Receiving Centre.

Published 13/08/99


TIG 7 Issue 5 BT Public Switched telephone Network (PSTN): Technical Characteristics of the Supplementary Services available on the Analogue Line Interface
This Technical Interface Guide (TIG) specifies those technical characteristics of the Supplementary Services available on an analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT, delivered to a customer at the Network Termination Point (NTP). This issue details amendments to Homemover Redirect (4.17) and Repeat Last Call has been added to Annex A.

Published 12/08/99


SIN 306 Issue 1 BT VideoStream & BT Datastream (Service Provider) Services - Service Description and Interface Specification
This Suppliers Information Note (SIN) describes the BT VideoStream & BT DataStream Services and provides information for use by BT and Independent Service Providers (SPs), Other Licensed Operators (OLOs), Other Network Operators (ONOs), Customer Premises Equipment (CPE) manufacturers and developers.

Published 04/08/99


SIN 329 Issue 1 BT IPStream Service Provider
This Suppliers' Information Note (SIN) gives information about BT IPStream, part of BT's Internet Protocol (IP) Transport Services portfolio ( SIN no. 302 ). This SIN should be read in conjunction with SIN302.

Published 04/08/99


TIG 7 Issue 4 BT Public Switched telephone Network (PSTN): Technical Characteristics of the Supplementary Services available on the Analogue Line Interface
This Technical Interface Guide (TIG) specifies those technical characteristics of the Supplementary Services available on an analogue line interface of the Public Switched Telephone Network (PSTN) provided by BT, delivered to a customer at the Network Termination Point (NTP). This issue details amendments to Soft Dial Tone (clause 4.17), Prompted Ring Back (clause 4.9) and Choose to Refuse (Clause 4.16).

Published 03/08/99


SIN 297 Issue 2.0 BT FEATURELINE Service Description
FeatureLine is a service provided from BT's public exchanges that offers customers facilities similar to those of a small Private Branch Exchange (PBX), but without the need for the customer to have switching hardware on their premises.

Published 29/07/99


SIN 324 Issue 2.0 - BT FeatureNet Embark Service Description
FeatureNet Embark enables customers with both large and very small sites to link together into a corporate telephone network, giving the benefit of a private network. This service is available on a national basis. The product delivers an integrated Virtual Private Network (VPN) and Centrex service. Initially, the service will only be available from System-X local exchanges.

Published 29/07/99


SIN 327 Issue 1 - Distribution of Suppliers' Information Notes
This Suppliers' Information Note (SIN) announces the cessation of paper distribution to interested parties.

Published 01/07/99


SIN 277 Issue 2 - Impact on Terminal Equipment of Changes to The Dialled Digit Number Length in The Public PSTN and ISDN
This issue of the SIN has been published to take account of the impact of the UK National Code and Number Change that is taking place over the next 2 years.

Published 01/07/99


SIN 326 Issue 1 - BT INTERNATIONAL MEGASTREAM 155 - SERVICE DESCRIPTION
BT International MegaStream 155 is an international Synchronous Digital Hierarchy (SDH) point to point leased high speed digital service supporting customer access at 155 520 kbit/s which conforms to ITU-T Recommendation G.707 [6].

Published 23/06/99


CALLS AND ACCESS PRODUCT INFORMATION
Informs Service Providers of the launch of a number of new products to be made available for BT Retail customers in July 1999.

Published 07/06/99


SIN 316 Issue 3 - Enhanced Digital Value Call Access - service description
The BT Enhanced Digital Value Call Access service uses an ISDN I.421 primary rate access and complements the existing BT ISDN 30 (I.421) Service as defined in SIN 261 [1]. The Enhanced Digital Value Call Access service is available to customers (who will typically be Service Providers) employing direct trunk level connection to the BT network for high traffic, multiple line call delivery. Issue 2 announced enhancements to the service planned to be implemented in spring 1999 and this Issue announces a further enhancement to the service planned for implementation in late 1999. This enhancement is the addition of the Enhanced Mid Call Diversion (EMCD) supplementary service.

Published 03/06/99


SIN 261 Issue 4 - BT ISDN 2e and ISDN 30e (ISDN30 (I.421) using full ETSI Call Control - Service Description
This SIN describes the BT ISDN 2e and ISDN 30e ETSI services. ISDN 30e has previously been referred to as ISDN 30(I421) and has been re-branded for new installations on the full ETSI call control platform.

Published 03/06/99


TIG 11 issue 2 - BT FeatureNet ™ Service: 300 Technical Characteristics Of The Non-ISDN Interfaces
This Technical Interface Guide (TIG) specifies the technical characteristics at the Network Termination Point (NTP) for the non-ISDN interfaces providing voice telephony on BT's FeatureNet service.

Published 21/05/99


SIN 141 - Revised Nominal Line Feed Current for PSTN Connections - WITHDRAWN
SIN 200 - European Emergency Number - WITHDRAWN
SIN 215 - National Code Change - WITHDRAWN
SIN 255 - Public Switched Telephone Services Technical Information For Suppliers (Support for MF)

Withdrawn May 99


SIN 256 - BT ISDN2 Service Evolution to European Standard (ETSI) ISDN changes to an existing network service - WITHDRAWN - The information contained in this SIN has been incorporated into SIN 171.

Published April 99


SIN 259 issue 1.1 - SecureStreamTM 300 (Formerly called the Circuit Switched Data Network [CSDN]) Interface And Signalling Requirements - Service Description
The service functions as a Virtual Private Data Network using the proven digital technology of BT's UK National Telex network at a rate of 300 bit/sec. The service offers a transparent connection between customer data terminals.

Published 28/04/99


SIN 171 issue 8.1 - BT ISDN 2 Using limited ETSI Call Control
This Suppliers Information Note (SIN) describes the "BT ISDN 2" service (I.420 Basic User-Network Interface) which is supported on the limited ETSI call control platform. It is intended to provide general information about the service for apparatus manufacturers and developers.

Published 27/04/99


SIN 232 Issue 4.1 - BT ISDN 30 (I.421) - SERVICE (Using limited ETSI Call Control)
This Suppliers Information Note (SIN) describes the BT ISDN 30 (I.421) Service supported on the limited ETSI call control platform, (CCITT Recommendation I.421 User-Network Interface). It is intended to provide general information about the service for Customer Premises Equipment (CPE) manufacturers and developers.

Published 27/04/99


SIN 291 issue 2 - BT FrameStream ™ Service Description
This Suppliers Information Note (SIN) describes the BT FrameStream service which uses Frame Relay (FR) technology. This document provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers.

Published 21/04/99


The following TIGs have been reissued:

TIG 6 issue 2 - BT Public Switched Telephone Network (PSTN):
Technical Characteristics of BT's Type 2 Channel Associated Signalling System (CASS) Interface

TIG 7 issue 2 - BT Public Switched Telephone Network (PSTN):
Technical Characteristics Of The Supplementary Services available on the Analogue Line Interface

The following new TIGs have been issued:

TIG 20 issue 1 - BT FrameStream*:
Technical Characteristics Of The Frame Relay Interface

TIG 21 issue 1 - BT Basic X.25 Direct*:
Technical Characteristics of the X.25 Interface

Published 21/04/99


SIN 289 Issue 2.0.
This Suppliers' Information Note (SIN) describes the BT MegaStream 155 and MegaStream Aggregate services . BT MegaStream 155 is an inland Synchronous Digital Hierarchy (SDH) point to point or aggregate (MegaStream Aggregate), leased high speed digital service supporting customer access at 155 520 kbit/s which conforms to ITU-T Recommendation G.707[6]. The MegaStream 155 service will support the SDH Virtual Container VC4. The use of the VC4 will depend on customer application, however, if the customer wishes to sub-divide the VC4 into VC12s, VC3s, or ATM etc, then BT recommends that the multiplexing structure in figure 1 of ETS 300 147 [10] is adopted. The MegaStream Aggregate service allows for multiple numbers of inland MegaStream 2048Kbit/s circuits or a combination of MegaStream 2048Kbit/s, 34,368Kbit/s and 45,736Kbit/s, or KiloStream Aggregate Interface Bearer, International Private Circuits, ISDN 30 or any other 2Mbit/s presentation as per the multiplexing structure in figure 1 of ETS 300 147[1possibly from all over the United Kingdom to be delivered to a site as a single 155,520Kbit/s customer presentation.

Published 22/03/99


SIN 243 Issue 2.0. BT ISDN Services. ISDN International Interworking .
The purpose of this Suppliers' Information Note (SIN) is to provide Customer Premises Equipment (CPE) suppliers and manufacturers with information specific to international interworking between BT's ISDN services and overseas ISDNs. This SIN should be read in conjunction with the SIN appropriate to the BT ISDN service of interest. For an overview of all current BT ISDN services and an index of ISDN related SINs, see SIN 312.

Published 12/03/99


The following SINs have been withdrawn because they all describe approval requirements which are now out of date.

    SIN 114 Connection to BT Network Using DASS 2 - Requirements for PBXs already approved to BS 6450 part2

    SIN 139A (Addendum to SIN139) BT requirements for 2048kbit/s Interface to the BT Network providing access to international 1544 kbit/s Networks

    SIN 140 2048 kbit/s Interface to the BT Network Providing Access to International 1544 kbit/s Networks - Connection Requirements

    SIN 205 Access to BT's Callstream Services via 2048kbit/s Interface Using Channel Associated Signalling Approval Requirements

    SIN 180 Starsat Service - Connection Requirements

    SIN 149 Racenet - Connection Requirements

    SIN 160 ETAN (EFTPOS Term'l Access N/W) - Conn. Requirements

    SIN 185 Interim Analogue Private Circuit - Connection Reqs

    SIN 170 International MegaStream (2Mbit/s) - Connection Reqs

    SIN 219 MegaStream 34 - Attachment Requirements

    SIN 325 Issue 1. Approval Requirements for Terminal Equipment
    This SIN has been issued to give all the necessary contact details for enquiries about approval of terminal equipment intended for connection to BT networks. Future SINs will not contain specific references to approval organisations or requirements but will refer to SIN 325. This SIN gives contact information, including www sites and e-mail addresses, for all UK bodies associated with granting approval and will be updated as the approval regime evolves.

    Published 12/03/99


    SIN 301 Issue 1. UK National Code and Number Change
    This Suppliers Information Note announces the proposed changes and gives references to important www sites.

    Published 22/02/99


    SIN 276 Issue 1 WITHDRAWAL OF BT Managed Telemetry service marketed as MeterLink.
    This Suppliers Information Note advises that BT will cease to provide the BT Managed Telemetry Service incorporating the BT MeterLink service.

    Published 12/02/99


    SIN 314 Issue1 BT Digital Video Broadcast (DVB) service using the Asynchronous Serial Interface (ASI).
    The BT DVB ASI service allows transport streams formatted in accordance with A010 REV1.0[2] to be carried across its telecommunications network via terminal multiplex equipment located on customers premises.

    Published 12/02/99


    SIN 316 Issue 2.1 Enhanced Digital Value Call Access
    Issue 1 of this SIN announced the introduction of the Enhanced Digital Value Call Access service. The availability of the service to customers is subject to operational availability and customer requirements. Enhancements to the service are planned to be implemented in spring 1999. These enhancements include customer controlled channel blocking, and additional network controlled options in the channel hunting algorithm and use of the Status Enquiry procedure. These enhancements are included in this issue of the SIN.

    Published 25/01/99


    SIN 312 Issue 1.1 ISDN Overview
    An editorial update of Issue 1. A number of ISDN related SINs have been published since BT launched it's first ISDN service and the purpose of this SIN is to provide an overview of BT's ISDN services and index the SINs related to them.

    Published 18/01/99


    SIN 324 issue 1 - FeatureNet Embark - SERVICE DESCRIPTION
    FeatureNet Embark enables customers with both large and very small sites to link together into a corporate telephone network, giving the benefit of a private network. This service is available on a national basis. The product delivers an integrated Virtual Private Network (VPN) and Centrex service. Initially, the service will only be available from System-X local exchanges. Customers will connect to the service either via centrex access lines, which are based on the existing FeatureLine product (details are contained in SIN 297), or via 2M/Bit DPNSS digital access.

    Published 14/01/99


    SIN 225 issue 2 - BT ISDNconnect (Formally; BT ISDN D-Channel Service or Fixed Channel Service) - SERVICE DESCRIPTION
    The BT ISDNconnect Service provides packet mode interconnection of a customer (who may typically be a Value Added Service Supplier or a packet switched data network operator) to its users by means of permanent logical links (PLL). The service is ideally suited to low throughput packet traffic between multiple users and a single customer. BT launched the ISDNconnect Service in September 1998. Following the phased geographically based rollout; a customer may gain access to the service from any point in the UK, provided the customer's ISDN user is in the launch area (London initially). Provision of the service is subject to operational availability.

    Published 04/01/99


    SIN 315 issue 1 - Analogue Display Services Interface Technical Information for Suppliers
    Any new technology can meet with problems in trying to enter the market. ADSI technology defined by Bellcore in the USA is available and offers the opportunity to provide easy control of PSTN supplementary services as well as other unique services that use the network as a bearer. The problem currently faced by Terminal Equipment manufacturers is that there are relatively few opportunities to use an ADSI phone. As a result convincing users that it is worthwhile investing in ADSI technology is proving difficult. This SIN provides details of a BT initiative to help stimulate this market. ADSI Services can be provided over any connection where the terminal equipment at the ends is connected to an analogue network e.g. the PSTN.

    Published 23/12/98


    SIN 133 issue 2 - BT Cardway Service Service Description
    The BT Cardway service provides a means of data communication between terminals connected via PSTN or ISDN lines and a central host computer connected via a private circuit. The principal application is the authorisation of credit card transactions in retail stores. The network is optimised for the real time transmission of short transaction messages. A typical Cardway call may have a duration between 5 and 15 seconds and convey a few hundred bytes of data.

    Published 23/12/98


    SIN 313 issue 2 - Flexinumber Automatic Update Facility Service Description(Formally Onenumber)
    The BT Onenumber Service has been available since January 1997 (see annex A for further detail) and is changing its name to Flexinumber in November 1998. The service directs a customer's calls to any fixed or mobile phone in the UK in accordance with their profile. Currently, customers update their profile by manually dialling the access number (0345 070700) and following a sequence of voice announcements. These prompt the customer to enter their customer number, PIN and commands as DTMF digits. This SIN introduces a new service, to be accessed via a different access number (maximum 11 digits in length), which will enable CPE to carry out this function automatically. The manual service for updating the customer profile will continue to be independent of the automatic service. Technical details of this new service are given in section 4.

    Published 23/12/98


    SIN 264 Issue 3 BT Cellstream Service Description
    The BT CellStream service supports the Broadband Integrated Services Digital Network (B-ISDN) platform, using a combination of Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) transport mechanisms for the transport of Asynchronous Transfer Mode (ATM) cells.
    This Suppliers Information Note (SIN) describes the BT CellStream service. It provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers, including details on service availability and tariffs, service features and options, service physical interface presentations and approvals related information.
    This latest issue announces in Section 3.3, improved access to International destinations as well as introducing a number of new CellStream service options. Section 3.4 describes the CellStream / FrameStream Service Interworking service.

    Published 18/12/98


    SIN 320 Issue 1 Serial Digital Video (SDV) and Associated AES/EBU Digital Audio Circuit - SERVICE DESCRIPTION
    Serial Digital Video (SDV) Circuits will be available on a point to point basis, within the UK. This product will be available either as a new provision, or as a migration from existing Analogue Presented PAL Vision Circuits, with associated Sound Circuits. This product allows Serial Digital Video from studio equipment, which operates at 270 Mbit/s to be transported between locations in the UK using BT's telecommunications infrastructure. This is achieved by the use of compression of the video and audio to fit within a standard 140 Mbit/s digital carrier.

    Published 30/11/98


    SIN 323 Issue 1 Switched Serial Digital Video (SDV) and Associated AES/EBU Digital Audio Circuit - SERVICE DESCRIPTION
    As for SIN 320 (above) but allowing switching between SDV circuits.

    Published 30/11/98


    Some BT ISDN SINs have been re-issued.
    SIN 171 - BT ISDN 2 Using limited ETSI Call Control has gone to issue 8
    SIN 232 - BT ISDN 30 (I.421) - SERVICE (Using limited ETSI Call Control) has gone to issue 4.
    SIN 312 has been published to help explain the relationship between the various services.

    Published 13/10/98


    SIN 307 issue 2, BT Prompted RingBack Service. -
    The Prompted Ring Back service is an enhancement to the RingBack Service in that an announcement is received during busy indication, (engaged tone) reminding the caller that RBWF (ring back when free) is available.

    This issue clarifies the number of bursts of engaged tone which will be received before the announcement. This change has been made in response to concerns about tone detection on automatic dialling equipment.

    Published 06/10/98


    STIN 306 VideoStream/SP* (Service Provider) Service - Trial Information Note.
    The information contained in this Suppliers Trial Information Note (STIN) relates to the trial of a planned service. This service provides Independent Service Providers and BT's Supplemental Systems Business (SSB) with a network service to support video based multi-media content services e.g. Video-on-demand. VideoStream/SP is a Service Provider product directed to support consumer delivery of Video based content and is packaged, tariffed and then sold on a bulk basis.. The quality of service offered is intended to be adequate for domestic services. The service has been designed for Service Providers operating their own Service Desk capability offering their own front-end installation, maintenance and billing support.

    Published 23/07/98


    SIN 261 Issue 3 -BT ISDN 2e and ISDN 30 (I.421) SERVICE using full ETSI Call Control
    This Suppliers Information Note (SIN) describes the BT ISDN 2e and ISDN 30 (I.421) National Service provided on the BT Euro-ISDN network platform which will use call control procedures fully aligned with the ISDN architecture as defined by the European (i.e. ETSI) standards. In this document, this network platform is referred to as the full ETSI call control network platform. The SIN is intended to provide general information about the service for Customer Premises Equipment (CPE) manufacturers and developers. The ISDN 2 and ISDN 30 Services currently offered by BT are supported on two network platforms, the limited ETSI call control platform and the full ETSI call control platform. The limited ETSI call control platform was designed and implemented prior to the completion of the European ISDN standards published by the European Telecommunications Standards Institute (ETSI).

    Published 23/07/98


    SIN 316 - Enhanced Digital Value Call Access service.
    The BT Enhanced Digital Value Call Access service uses an ISDN I.421 primary rate access and complements the existing BT ISDN 30 (I.421) Service as defined in SIN 261 [1]. The Enhanced Digital Value Call Access service will be available to customers (who will typically be Service Providers) employing direct trunk level connection to the BT network for high traffic, multiple line call delivery. The introduction of the ISDN option for this type of delivery will see a number of improvements over signalling systems currently employed, particularly fast call set-up and CLI presentation.

    Published 21/07/98


    SIN 313 - The BT Onenumber Service which has been available since January 1997 directs a customer's calls to any fixed or mobile phone in the UK in accordance with their profile. Currently, customers update their profile by manually dialling the access number and following a sequence of voice announcements. This SIN introduces a new service, which will enable CPE to carry out this function automatically.

    Published 05/06/98


    SIN 266 was published in November 1996 and has been produced here in pdf by request. SIN266 - BT's analogue presented vision circuits have a PAL System I video standard interface and are designed for the point to point transmission of unidirectional broadcast quality vision signals along with their associated audio, teletext and data signals. Separate sound circuits can additionally be provided.

    Published 01/06/98


    SIN 223 issue 2 describes the BT MegaStream 2 and BT MegaStream 8 services and provides technical information for terminal equipment manufacturers, suppliers and developers. This revision of the SIN introduces the X.21 interface on the MegaStream 2 Service.

    Published 21/05/98


    SIN 297 issue 1,BT FeatureLine Service. - FeatureLine is a service provided from BT’s public exchanges that offers customers facilities similar to those of a small Private Branch Exchange (PBX), but without the need for the customer to have switching hardware on their premises.

    Published 03/04/98


    SIN 302 issue 1, BT Internet Protocol (IP) Transport Services - The IP Transport Service Systems Business will comprise Internet and UK IP VPN (Virtual Private Network) service offerings with dial, fixed and gateway accesses.

    Published 20/03/98


    SIN 300 issue 1, BT MusicLine 2000 range of services -MusicLine 2000 is a highly flexible point-to-point service that meets the needs of Radio and TV broadcasters. The standard service consists of a Forward Direction 15kHz stereophonic service. Options allow for additional Forward Direction or Reverse Direction 15kHz channels, as well as the inclusion of multiple control channels and multiple 64kbit/s channels.

    Published 10/03/98


    SIN 290 issue 1, BT MusicLine One Service -This service provides a mono audio circuit with a nominal bandwidth of 20Hz to 7.5kHz and a loss/frequency response of:- ±1.0dB across the frequency range. Typical uses would be high quality speech contribution and AM/ MW transmitter feeds.

    Published 10/03/98


    SIN 278 issue 1, Enhanced Information Service for Emergency Calls -This Service, for Emergency Authorities only, transfers the CLI from the caller's point of origin to the Emergency Authority via the BT operator.

    Published 04/03/98


    SIN 240 issue 4, BT Switched Multi-Megabit Data Service (BT SMDS) -This SIN describes the BT SMDS following the introduction of the 0.2 Mbit/s access class rate.

    Published 18/02/98


    SIN 243 BT ISDN International Interworking With USA - Treatment Of 56KBIT/S Data Calls. This SIN was published in 1994 and has been requested in PDF.

    Published 13/02/98


    SIN 305 Schools' Internet Caller Service. This SIN is now at issue 2 and provides details of the product including price information.

    Published 10/02/98


    SIN 287 describes the BT Call Mapping Service that is available to third party service providers. The SIN provides information on the physical, electrical and the signalling mechanisms to be used at the interface between the BT network and the Voice Messaging Service Providers’ equipment.

    Published 22/01/98


    SIN 291 BT FrameStream service provides transport of Frame Relay Frames on a point-to-point basis. The service initially offers Permanent Virtual Circuit (PVC) connectivity between two FR Virtual Circuit (VC) end-points.

    Published 22/01/98


    SIN 293 BT Local Area Network (LAN) Extension Service 622 (LES 622)
    The LES 622 services are constructed from the LES 622B generic building block consisting of a single link between customers sites. The services operate at 622,080kbit/s (±20ppm) at distances of up to approximately 25km between customers sites.

    Published 22/1/98

    Addendum to SIN 264 Issue 2 BT CellStream Service Description. This addendum to the CellStream Service Description SIN 264 describes the BT CellStream Metropolitan service. Either load SIN 264 with the Addendum or just the Addendum alone.

    Published 07/01/98


    SIN 295 BT Basic X.25 Direct Service provides transport of X.25 packets between X.25 end-points. The service offers a Switched Virtual Circuit (SVC) between two X.25 Data Terminating Equipment (DTE) points. A DTE will support SVC incoming, SVC outgoing or SVC both way connections.

    Published 22/12/97


    SIN 305 Schools' Internet Caller Service - Information
    Details of the product including price information.

    Published 17/12/97


    BT ISDN Fixed Channel Service (Formally; BT ISDN D-Channel Service) Service Description The BT ISDN Fixed Channel Service provides packet mode interconnection of a customer (who may typically be a Value Added Service Supplier or a packet switched data network operator) to its users by means of permanent logical links (PLL).

    Published 16/12/97


    SIN 289 BT Megastream 155 Service Description BT MegaStream 155 is an inland Synchronous Digital Hierarchy (SDH) point to point leased high speed digital service supporting customer access at 155 520 kbit/s which conforms to ITU-T Recommendation G.707.

    Published 05/12/97


    SIN 286 BT LAN Extension Service 155 - Service Description issued. This Suppliers Information Note (SIN) describes the BT Local Area Network (LAN) Extension Service 155 (LES 155). The SIN also provides information about the service for use by Customer Premises Equipment (CPE) manufacturers and developers.

    Published 27/11/97


    SIN 304 Issue 1 - .Suppliers' Information Notes WWW Site - WITHDRAWN

    Withdrawn November 97


    SIN 227 Issue 3. The service description for Caller Display Services has been reissued with a note added to 3.2.1.2.1 (Start Point). This clarifies the status of the Call Waiting Beep with respect to the CDS signalling. There are no technical changes.

    Published 18/11/97


    SIN 275 Lowband Digital Access Service Description . Lowband Digital Access provides analogue PSTN and basic rate ISDN services through the same network connection to the customer.

    Published 13/11/97


    SIN 109 Issue 2 - Customer Premises Equipment (CPE) Compatibility with BT Exchange Equipment - WITHDRAWN

    SIN 132 - BT Cardway Service - Apparatus Approval Requirements - WITHDRAWN

    SIN 270 - Relocation of Technical Regulatory Services Unit TRSU - WITHDRAWN


    Technical Interface Guides are issued. The information in TIGs is provided in accordance with the requirements of the Telecommunications (Voice Telephony) Regulations 1997 to publish (in accordance with the EC Voice Telephony Directive 95/62/EC) technical characteristics of interfaces to the public fixed telephone network.