For illustrative purposes, here are simple graphic representations of call paths through BT’s network today and 21CN.
through strategic 21CN domains
Voice call path - today and tomorrow
Broadband call path - today and tomorrow. Offers a simple graphic representations of the path a broadband takes through the network
Voice to communications provider today and tomorrow. Offers a simple graphic representations of the path a voice call takes between a communications provider’s and BT’s network. Standards and designs are being defined for communications providers wishing to move to IP-based interconnect. One proposal is that IP-based functionality will be at a metro node with a point of handover at a MSAN.
Current thinking. No implementation assurances