1. business unit (for internal use only) / url (for external use) Implementation & Migration Programme Plans This presentation covers: Consultation Plan – a specific view of Q1 2006 activity (Slides 2 – 8) A view of the principles underpinning BT’s Testing Consultation (Slides 9-13)

2. business unit (for internal use only) / url (for external use) Implementation & Migration Programme Plans Anthony Stephens This presentation covers: Consultation Plan – a specific view of Q1 2006 activity

3. Test & Diagnostics Service Migration – BT Plan & Approach To deliver the objectives of the Implementation & Migration Working Group, Industry consultation/dialogue will be required in the following areas : Operational Readiness Service Migration Business Management Trials & Testing Fallback Procedures Migration Methodology & Procedures Operational Planning & Analysis End User Impact Analysis “Pathfinder” Success Criteria Command & Control Business Continuity Planning

4. Implementation & Migration Consultation Plan The following slides are an extract from the 21c Implementation and Migration consultation plan The objective is to: Provide visibility of key consultation topics spanning Q4 2005 - Q1 2006 Provide visibility of underpinning milestones

5. Implementation & Migration Consultation Plan - Q4 2005 Migration Proposal Consultation Concluded Interconnect operational and technical bi-laterals Business Continuity Agreed proposal & requirements capture docs issued to TIEPF Requirements capture underway through TIEPF Fall Back For Route Migration @ IMWG on 16/12/05 Migration Methodology & Procedures Principles Transfer slot allocation for route migration PSTN Mass Migration: Transfer principles & process End user impacts Trials & Test Sharing of initial thoughts on Consultation timeline & principles

6. 21c Implementation & Migration Consultation Plan - Quarter 1 Jan - Mar 06 Command & Control (Jan 05) Issue proposed scope for requirements capture Commence requirements capture (Jan 17th) Requirements capture close (Mar 15th) Requirements collation & data cleanse (Mar 30th ) Business Continuity Jan - Mar 06 Business continuity stage report (Jan 18th) Requirements capture phase closure (Jan 31st) Requirements collation & cleanse (Feb 1st) Achievability phase commences (Feb 28th) Requirements deployment and negotiation phase (start of ‘lockdown’ period) (Mar 1st) PSTN Mass Migration - Jan 18th Operational planning & analysis Pathfinder Feb 22nd Operational gates & readiness

7. business unit (for internal use only) / url (for external use) 21 CN Testing & Trials Andrew Hill BT is currently developing its Testing Plan; the objective of this presentation is to share with Communication Providers: BT’s Trials & Testing Strategy principles BT’s initial thoughts on a Testing Consultation Timeline in order to facilitate the operation of the newly created Conformance Testing Working Group (outlined at the Implementation & Migration Working Group on 15/11/05)

8. BT Test Objectives & Management The over-arching objective of 21st Century Network Testing and Trials is to deliver fit-for-purpose 21CN Network, Systems and Process Components. The key objectives for testing & trials are defined below and must meet BT’s Launch Integration Process Quality Gate criteria, in general they are as follows: - To ensure that the functionality provided works as expected and supports all the requirements of the 21CN Programme To ensure that interfaces between Networks and Systems are functioning as described in the technical architecture To ensure that all elements of the solution function correctly under normal and error conditions (technical and operational) Industry Communication on Testing will be managed through the Consult21 Conformance Testing Working Group

9. 21CN Test Strategy Principles BT collates and run Generic Test cases BT communicates Generic Test results to Industry via the Conformance Testing Working Group For infrastructure (as appropriate/applicable) For products For product migration verification tests For CPE testing (as appropriate/applicable) Non – Generic Test case requirements reviewed by the Conformance Testing Working Group CPE testing focuses on a representative selection of equipment in use in the market

10. BT’s initial view of Consultation Timetable December 2005: Create the Conformance Testing Working Group Communicate Test strategy principles January/February 2006 Launch Conformance Testing Working Group Communicate BT’s Testing Strategy including initial Generic test list & Test Case requirements capture template Communicate CPE test list to Communication Providers so that potential additions can be identified February/March 2006 BT Review Test Case requirements capture and update Generic test list BT produces a final prioritised list of CPE to test April 2006 onwards Generic test results made available to Conformance Testing Working Group CPE test results made available to Conformance Testing Working Group

11. CPE Testing Context 21CN is compliant to UK Transmission Plan, as is the existing PSTN. However complex routed calls over multiple operator’s networks can already exceed the UK National Transmission Plan limits. Industry is invited to note presentation on 15/12/05 by Allan Good to Interconnect & Portfolio Working Group on this topic The UK Transmission Plan can be found at: http://www.nicc.org.uk http://www.nicc.org.uk BT Supplier Information Notes (SINs) can be found at: http://www.sinet.bt.com http://www.sinet.bt.com