3. Director Industry Development Jo Upward

4. FORWARD LOOKING STATEMENTS – CAUTION ADVISED Certain statements in this presentation are forward-looking and are made in reliance on the safe harbour provisions of the US Private Securities Litigation Reform Act of 1995. These statements include, without limitation, those concerning: BT's plans for transformation of its networks; benefits to customers of the 21CN programme; key milestones and expected timetable for delivery of 21CN; and the benefits in relation to, for example interconnect, convergence and broadband Although BT believes that the expectations reflected in these forward-looking statements are reasonable, it can give no assurance that these expectations will prove to have been correct. Because these statements involve risks and uncertainties, actual outcomes may differ materially from those expressed or implied by these forward-looking statements Factors that could cause differences between actual outcomes and those implied by the forward-looking statements include, but are not limited to: material adverse changes in economic and financial markets conditions in the markets served by BT; supplier arrangements; future regulatory actions and conditions in BT’s operating areas; technological innovations; developments in the convergence of technologies and the anticipated benefits and advantages of new technologies, products and services, including broadband, not being realised

5. AGENDA 10.30 Welcome and Introduction Jo Upward 10.35 21CN Migration Proposal Consultation Process Jo Upward 10.45 21CN Migration Proposal and Key Strategic ElementsMatt Beal 11.00 21CN Migration Proposal Detail Matt Beal Operations Detail Operational Risks and Issues 11.20 Introduction to Migration Delivery Team The Way Forward Deb Covey 11.30 Q & AAll 12.00 CloseJo Upward 12.10 Lunch

6. NATIONAL MIGRATION PROPOSAL: CONSULTATION FRAMEWORK

7. NATIONAL MIGRATION PROPOSAL: CONSULTATION FRAMEWORK SCOPE: BT will consult specifically on its proposed Migration Plan as part of the consultation on 21CN OBJECTIVE & TIMESCALES present as clear a view as possible of the Migration Plan, including aspects where changes can be considered, and those that cannot, e.g. end date. commences in October with a formal statement of closure expected in January. Migration Plan published to key stakeholders from February. CAVEAT the published Migration plan, which covers a 5 year term, will be subject to regular review within the I&M working group, and inevitably will be subject to change.

8. WHY ARE WE CONSULTING? Goal: Production of a Plan of Record for business planning purposes BT does not have all the answers BT seeks views on the most appropriate and timely approach to: Reach acceptable solution to all parties – recognising the schedule will be fine tuned to reflect operational needs as migration proceeds Effective change control management Minimising & anticipating the impact on customers

9. FIT WITH EXISTING CONSULT 21 PROCESS Migration Proposal Consultation Operationally under the umbrella of the I&M working group Co-Chairs – Chris Danzelman (C&W), Mike Cook (BT) may include separate ‘community of interest’ sub groups End user communications Customer Migration Communications working group communications programme to support public dissemination of this information Appropriate, timely and relevant

10. Pre-Consultation (22/9-20/10) Framework & Enablers Consultation (21/10– 16/12) Multi/Bi-Lateral Consultation NATIONAL MIGRATION PROPOSAL: CONSULTATION PROCESS OVERVIEW Revised National Migration Proposal 21/10

11. NATIONAL MIGRATION PROPOSAL: PRE-CONSULTATION PHASE Pre-Consultation Goals: Answers to the questions: key topics for the Consultation phase appropriate structure for consultation: multi-lateral v bi-lateral discussion additional information required for meaningful consultation on the NMP industry view regarding operational disputes process envisioned in the TSR Undertakings written views and comments on the issues raised in the NMP 22/09National Migration Proposal (iteration 1) issued to industry 04/10National Migration Proposal Information Exchange Event 07/10Pre-consultation closes 19/10Implementation & Migration Working Group Consultation phase approach (21/10 – 16/12) Timetable for additional information Overview of Comments & BT approach Overview of Change Control & Dispute process 21/10National Migration Proposal (iteration 2) issued to industry

12. NATIONAL MIGRATION PROPOSAL: CONSULTATION PHASE What we are consulting on: Operational impact of timing Sequencing Specific event driven freeze periods Sensitive customer impact Forecasted cost optimisation NGN business plans Re-use of ‘stranded assets’ Other issues raised within scope from the pre-consultation 21/10 National Migration Proposal (iteration 2) issued to industry 22/10 – 02/12/05 Multi/Bilateral Consultation Communities of interest 02/12 - 16/12 Consultation conclusion 01/2006 Formal issue of National Migration Plan 02-03/2006 Publication of the National Migration Plan

13. NATIONAL MIGRATION PROPOSAL: KEY STRATEGIC ELEMENTS AND DETAIL

14. Director 21 CN Solution Definition and Delivery Matt Beal

15. NATIONAL MIGRATION PROPOSAL: STRATEGIC IMPORTANCE To ensure a smooth transition to the UK’s advanced communications network for the future: BT recognises the importance of gaining industry involvement before the Migration Plan is finalised BT remains committed to give as much advanced notice as possible of its 21CN intentions The information is provided to elicit feedback and to enable industry to undertake preliminary : Business planning Capital investment programme planning Resource planning

16. NATIONAL MIGRATION PROPOSAL: INFORMATION OVERVIEW Topology of 21CN Network Deployment of MSANs Mass migration to the 21CN network Consultation principles Aim: Sufficient information for CPs to determine how and when they need to change their existing switch network to effectively interconnect with 21CN

17. NETWORK TOPOLOGY

18. NATIONAL MIGRATION PROPOSAL: KEY STRATEGIC ELEMENTS AND DETAIL

19. MSAN DEPLOYMENT Information disclosure: List of Metro and core node sites Specific building address available via NISCC List of Tier 1 MSAN sites List of other MSAN sites

20. MASS MIGRATION ROLLOUT Information disclosure: PSTN concentrator associated with each number block For each PSTN concentrator, we are providing: Quarter when traffic associated the concentrator is scheduled to be migrated onto the 21CN network The 21CN infrastructure details involved in supporting traffic from the concentrator: MSAN 1st and 2nd choice Metro nodes For each Metro node we are providing the 1st and 2nd choice NGS switch that will carry traffic

21. MASS MIGRATION – THE UK IMPACT March 2007 March 2008 March 2009 March 2010March 2011

22. MIGRATION CHECK LIST REFINEMENT Planning Phase: High-level SAN – identifying DLE and time window, and receiving feedback from CPs Detailed SAN – identifying routes, E1’s, transmission affected & specifying verification checks Implementation on timescales and method statements Agreement on costs Communications provider infrastructure migration Establish network freezes Network changes as per detailed SAN Post-migration verification checks End-user service migration Mitigating end-users concerns Patching to move services to the 21CN network Post-migration verification checks

23. SERVICE MIGRATION PLANS: PSTN AND BROADBAND MIGRATION Schedule plans for between 2 and 9 DLE transfer per week (equating to approx 150K lines). Planned for simultaneous migration of PSTN and BB. Data freeze periods will be discussed and agreed through the IMWG forum. Synchronised data will be maintained for a month period following migration for the event that regression and fallback is necessary. Business continuity success gate criteria must be achieved prior to any migration, co-ordinated from an Industry linked command and control centre.

24. OPERATIONAL READINESS 1. Service Migration & Continuity Customer Engagement CP Migration Plans Product & Service Migration 3. Business Continuity & Response Measurement Response Management Control 2. Operational Readiness De risk implementation Compliance to requirements Based on end-end impact COMPARATIVE IMPACT

25. STRUCTURED CONTINUITY PLAN Provides structured responses to problems related to mass migration Protects Customer Service Operations for BT, its Customers and their customers Avoid “Disasters” through preparation and learning Based on established “BAU” arrangements but greatly extended

26. WHY MORE THAN BAU? Maturity of the technology “Physical equipment” Reduced resilience and fallback at initial build Innovative nature of design 21CN brings new internal systems and working practices Presenting a highly visible target

27. WHAT ARE WE PLANNING? Pathfinder Full-scale migration of 350,000 end customers into 21CN network Developing framework for designing, trialing, and proving enhanced continuity plans to support mass-migration Developing Business Continuity framework Ensure continuity of service from now through completion of “Pathfinder” into mass migration Establish measurement framework to understand resource implications Initial draft available in late November 2005

28. NATIONAL MIGRATION PROPOSAL: INTRODUCTION TO MIGRATION DELIVERY TEAM & THE WAY FORWARD

29. Managing Director of Network Planning and Operations Deb Covey

30. RESPONSIBLE FOR 21CN Senior Team: 21CN Programme – Matt Beal Design – Daryl Dunbar Implementation – Ralph Steffans Testing and Trials – Dwight Davis Service Migration – Mike Cook Operational Management – Ashley Hannah

31. ANY QUESTIONS?