Anthony Stephens 21CN Customer Engagement 1 21CN High Level Consultation Plan The following plan provides a four month view of key consultation themes that are planned for sharing across the 21CN working groups and provides a summary of themes covered to date. Enquiries to Customer Engagement Programme Manager Contact: (21CN Customer Engagement)

Anthony Stephens 21CN Customer Engagement 2 March 06April 06May 06June 06 Consultation Plan Review PSTN Disconnection & Data migration Emergency & critical numbers definition Emergency & critical numbers identification and monitoring 21CN Node preparation Consultation Plan Review PSTN Fallback network principles PSTN (Voice)Network Resilience Broadband Migration Methodology Pathfinder Planning Session Consultation Plan Review Broadband Migration Fallback Broadband Resilience Pathfinder Planning Session Consultation Plan Review ISDN2 Migration Methodology ISDN30 Migration Methodology End Customer Experience Logical Security (T.B.A Poss July) MCC Design overview Pathfinder Planning Session I&MWG, BI-Laterals, BB/LLU & Line Access Working Groups

Anthony Stephens 21CN Customer Engagement 3 March 06April 06May 06June 06 MCC, Provisioning Experts Working Groups MCC – High level design, Requirements review MCC - MCC Final design review, requirements review MCC – Service management principles and processes. MCC – War gaming design ACO placement & review Routing Plans: format, management CP experience Ordering Process The Implementation Process Necessity & content driven by CP input at previous meeting

Anthony Stephens 21CN Customer Engagement 4 March 06April 06May 06June 06 Working Group Operation and setup Core Test Release: Prioritised List Test requirement template review Voice Trials overview VIC Testing overview Sharing and managing results Review of test requirements received to date Voice Trials Proposal Interoperability Workshops summary VIC Test Proposal feedback overview Conformance Testing Working Group Summary of consultation Summary of test requirements received to date Interoperability testing proposal overview Viewing test results Review Industry 21CN Test and Trials plan VIC Test results Voice Trials results to date CP Test Environment definition

Anthony Stephens 21CN Customer Engagement 5 March 06April 06May 06June 06 21CN Resilience design for Voice Proposed disaster recovery methodologies in the event of a catastrophic network incident. A ‘before and after’ comparison, i.e. differences and improvements in resilience between 20C and 21CN Business Continuity 21CN Resilience design for Broadband Proposed disaster recovery methodologies in the event of a catastrophic network incident. A ‘before and after’ comparison, i.e. differences and improvements in resilience between 20C and 21CN Business Continuity Requirements Capture - Interim compliance report to IMWG Emergency & critical numbers definition Emergency & critical numbers - Pre-transfer identification and monitoring

Anthony Stephens 21CN Customer Engagement 6 Oct -Dec 05Jan 06Feb 06 Business Continuity Principles BT Plan & approach to consultation Migration & Provisioning Plan Management Migration & Provisioning Operational Milestones BT Approach to end customer migration PSTN Line disconnection Consultation Closure Request & change management process Interconnect migration slot allocation process BT Trial & Testing strategy principles Consultation Summary Migration of PSTN voice services Network Tones & Announcements NGS Capacity check request process Network ringing current BT Approach to CPE compatibility testing & known issues Compression & Grooming ISDN2, 30, Broadband & PSTN Business continuity requirements capture stage report Pathfinder - articulated operational gateways and entry criteria BT’s Testing Proposal, Pre- Consultation Issued to Industry BT Tower Launch event on BT’s Testing Proposal

Anthony Stephens 21CN Customer Engagement 7 History - Ver 1.0December 05 - New, Anthony Stephens - Ver 1.1 January 06 - Up Issued, Anthony Stephens - Ver 1.2 February 06 - Up Issued, Anthony Stephens - Ver 1.3 March 1st 06 - Up Issued, Anthony Stephens - Ver 1.4 March 10th 06 - Format change and up issued, Anthony Stephens