Other BT PLC sections

Document source

Association for Payment Clearing Services. For APACS Standards

Association for Payment Clearing Services
Mercury House
Triton Court
14 Finsbury Square
London, EC2A 1BR

Tel: +44 20 7711 6200
Fax: +44 20 7256 5527

Audio Engineering Society For AES Society Standards

Audio Engineering Society
60 East 42nd Street
New York
NY 10165

+ 1 212 661 2355


American National Standards Institute. Contact for ANSI Specifications

ATM Forum

Information on the ATM Forum is available at http://www.atmforum.com/

Bellcore (for Bellcore Standards)

Bellcore Customer Service
8 Corporate Place (Room 3A184)
Piscataway, NJ 08854-4196

+1 732 699 5800


For Bluetooth specifications

British Approvals Board for Telecommunications (BABT)

BABT is an independent company within the TÜV SÜD Group. It certifies products and services in the fields of radio and telecommunications.

BT SINs sometimes reference documents managed by BABT. For example, BT SIN 227 (Calling Line Identification) references BABT's NV NTR Issue 2.

BABT should be contacted directly at the above email address or telephone number if a document is not readily available on the website.

British Standards

BSI – British Standards Insitute – The UK National Standards Organisation (NSO). Produces standards in the UK. Extends (internationally) into ISO and IEC, and in Europe into CEN/CENELEC and ETSI. BSI are able to provide copies of the following standards ETSI, CENELEC, British and ANSI/IEEE.

020 8996 7000
020 8996 7001 (fax)

BT Generic Standards

BT Generic Standards contain requirements that may be applied to goods or services purchased by BT

BT Interconnect Provisioning Manuals

The Interconnect Technical & Provisioning site provides UK Telecommunications Operators with much of the Technical information they will need to establish and maintain an interconnection with the BT network

BT Network Requirements (BTNRs)

The following three BTNRs:

BTNR 188 “Digital Private Signalling System No 1 (DPNSS 1)”
BTNR 189 “Interworking Between DPNSS1 and Other Signalling Systems”
BTNR 189I “Interworking Between DPNSS1 and ISDN Signalling Systems”

are published as NICC (Network Interoperability Consultative Committee) Documents ND1301, ND 1302 and ND 1303 respectively. These are available from the NICC website at http://www.nicc.org.uk/

The following BTNRs have not been published as NICC documents, but they have been made available here because they are referenced in SINs, STINs and SPINs:

BTNR 2511 "Interface of Telecommunications Equipment with a Nominal 48 V Negative d.c. Power Supply"
BTNR 181 Vol 1 & Vol 2 "Signalling System AC15"
BTNR 185 "Signalling System MF4 via Private Circuits"
BTNR 190 Vol 1 & Vol 2 "Digital Access Signalling System No 2 (DASS 2) PBX Interface"

No other BTNRs are available outside BT, except when supplied to selected companies as part of an invitation to tender for BT contracts. Please see the Selling2BT entry on the Useful Contacts page for information on the BT procurement process.

CDS™ Trade Mark Logo Licence Terms

To apply for a copy of the CDS ™ trade mark logo licence terms please write to:

Head of Trade Marks
BT Intellectual Property Division
pp C5.A
BT Centre
81 Newgate Street
London EC1A 7AJ

DVB Technology

Contact for DVB Interfaces.


ETSI (the European Telecommunications Standards Institute) is a non-profit making organization whose mission is to produce the telecommunications standards that will be used for decades to come throughout Europe and beyond.

for ETSI Standards

European Broadcasting Union (for EBU Standards)

European Broadcasting Union,
Ancienne Route 17a
Case portale 67
CH-1218 grande Saconnex

+41 22 717 21 11

Frame Relay Forum

Frame Relay Forum Implementation Agreements are available from this site

Global Engineering Inc.

15 Inverness Way

For international and national standards, specifications, and publications. Technical information and regulations, mechanical design specifications, electrical design specifications, and news from the world's leading Standards Developing Organizations (SDO), associations, and societies, such as ANSI, ASME, IEEE, UL, ISO, TIA, IEC, BSI, ASQ, ASTM, SAE, GM, FORD, NEMA, EIA, ISA, CSA, ICEA, JSA, DIN, API, IPC, CSR, and many, many others.

Tel: +1 303 792 2181
Fax: +1 303 792 2192

IBM Red Book Standards

For IBM Redbooks in Adobe PDF format, bound hardcopy or on CD-ROM


Contact for IEEE 802 standards

Internet Engineering Task Force RFCs

Contact for RFCs


International Telecommunications Union
Places des Nations
CH-1211 Geneva 20

Copies of ITU-T (formerly CCITT) documents can be obtained from ITU-T

+41 22 730 5111
+41 22 733 7256
Telex: 421000

NCITS InterNational Committee for Information Technology Standards

The InterNational Committee for Information Technology Standards (INCITS) is a forum for information technology developers, producers and users for the creation and maintenance of formal de jure IT standards. INCITS is accredited by, and operates under rules approved by, the American National Standards Institute (ANSI).


The Network Interoperability Consultative Committee site publishes Specifications, Guidelines and Technical Reports.

Nortel Specification Orderline

Copies of Nortel DMS100 documentation for use with SIN 357.

+1 0800 684 2273


Ofcom is the regulator – or “watchdog” – for the UK telecoms industry.

Parlay Group

Parlay X Web Services Specification

Public Network Operator Interest Group Technical Recommendations

These Technical Recommendations are published on the Network Interoperability Consultative Committee (NICC) publications page at the website above.

RFCs (Request for Comments) of the Internet Engineering Task Force

The web address for a specific RFC is http://www.ietf.org/rfc/rfcNNNN.txt, where NNNN is the number of the RFC

Society of Motion Picture and Television Engineers standards

Society of Motion Picture and Television Engineers
595 West Hartsdale Avenue
White Plains
NY 10607-1824

Copies of SMPTE documents may be obtained from Society of Motion Picture and Television Engineers.

Tel: +1 914 761 1100
Fax: +1 914 761 3115

UK Statutory Instruments (SI)

With effect from June 2004 the Explanatory Memorandum, setting out a brief statement of the purpose of an instrument and providing information about its policy objective and policy implications, which are produced to accompany any Statutory Instrument or Draft Statutory Instrument laid before Parliament have been published on this website.

Technical Indexes Ltd.

RG12 8DW

For copies of ATM Forum Standards.

+44 (0) 1344 861666 +44 (0) 1344 714440 (fax)

Telcordia Technologies

Contact for Telcordia Specifications

Telecommunications Industry Association (TIA)

What is TIA?

The Telecommunications Industry Association (TIA), formed in 1984 as a result of liberalisation and as the industry counterpart to the Regulator OFCOM, is a non-profit making organisation owned by its members. TIA, the prime national trade association for the telecommunications industry in Great Britain, is committed to improving the competitiveness of Member Companies.

TIA, which has more than 300 member companies, aims to promote business development, customer assurance and business efficiency in the British communications and networking technology industries. It represents and informs its members on British and EU regulatory affairs, standards and policy issues, and acts as the industry's 'self-policeman' providing codes of conduct and practice, dispute resolution and arbitration services. TIA provides a wide range of international trade development and support services through its 'Telecoms Partners' programme.

TIA are official distributors of all telecoms related standards documents: BS, EN, ETSI, ISO/IEC, ANCI, EIA/TIA, etc.

UK Interface Requirements

UK Interface requirements information.


USB (Universal Serial Bus) documentation