Interconnect Network Description
This page gives access to BT's Network Description, which gives an overview of BT's Public Switched Telephony Network (PSTN).
It also gives access to Network Information Publication Principles (NIPP) Annex B, which from March 2004 has been provided separately from the NIPP data files.
Registered users can obtain more detailed information about BT's PSTN from NIPP.
NIPP is detailed information about BT's Network that is provided in accordance with Ofcom's Network Information Publication Principles. The information is published quarterly and is only available to registered users.
Operators who have an Interconnection agreement with BT and require access to NIPP should speak to their BT Commercial Manager or Technical Account Director/Manager to arrange registration to enable access to NIPP.
If you already have access, click on the link to the right to enter the NIPP site.
Files available for you to download
BT Network Description Issue 8
NIPP Annex A