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BT Wholesale Numbering and Addressing Policy Overview (NIPP) - January 2006

This document outlines BT Wholesale's Numbering and Addressing Policy (NIPP) as discussed in the Consult.21 Interconnect Working Group on January 24, 2006. It provides comprehensive details on the network planning and interconnection strategies to enable Communications Providers (CPs) to effectively route calls. Key components include quarterly network information updates, descriptions of digital switching units, planned network changes, and interconnection interfaces. It also emphasizes the obligation to give reasonable advance notice of network changes impacting interconnect requirements.

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BT Wholesale Numbering and Addressing Policy Overview (NIPP) - January 2006

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  1. Consult 21 Interconnect Working Group 24 January 2006 John Baughan BT Wholesale Numbering & Addressing Policy

  2. NIPP • Network Information Publication Principles • Oftel (now Ofcom) Code of Practice - 1994 • Availability - In Confidence to CPs • Function - To enable CPs to plan their network routeing for Interconnect

  3. NIPP • A general description of BT’s Network • More detailed information published quarterly (QNI) - January, April, July, October • Precise details during interconnect negotiations • BT - will give operators “reasonable” advance notice of its network planning programme • To inform operators of changes which will affect interconnect

  4. Requirements of CoP • General Network Description • Town location of - Host Processors, Trunk Exchanges, International Exchanges • Interconnection interfaces available • Call routing principles

  5. Requirements of CoP • Quarterly Network Information • Number Ranges hosted on a processor System type of processorTown location of processorDigital Main Switching Unit hosting processorPlanned changes to any of the above

  6. NIPP Document Quarterly Network Information - Main • Sections 1-4 • Introduction and Explanation of Data Files • Section 5 • Planned Changes to BT Network • New Exchanges - Re-parenting - Closures • Switches - Transport - Signalling - Synchronisation

  7. NIPP Document Quarterly Network Information - Annexes • A - Code of Practice – On web • B - Interconnection Facilities – On web • C - Detailed Explanation of Data Files • D - London Network Structure • E - Provincial Network Structure • F - Frame Relay Interconnection

  8. Number ranges in use Parenting of ranges DLT to DLTE DLTEs DLE to DMSU Parent Priority DMSU re-parenting DMSU to NGS Exchange Names GNP Prefix routing Ranges being modernised Ranges being re-parented National Grid References NNIs Tandem parenting WAT to WAT Exchange addresses NIPP Data

  9. Recent Changes • Annexes published separately • Alignment with EBC • Changes to file format • Changes to web pages • Move to monthly update of some data files

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