Dave D’Arcy & Jim Feenan BT Wholesale

1. 21CN Migration process overview Dave D’Arcy & Jim Feenan BT Wholesale The dates and other information about BT's 21CN programme in this presentation are based on the best information currently available. As in any programme of this size and complexity, they may be subject to change

2. Introduction • The purpose of this presentation is to explain the process of migration to 21CN: • Testing activities across the programme. • What happens before, during and after each migration phase. • Quality gate process and role of the Migration Control Centre (MCC). • Migration into business as usual. • Fallback and emergency & critical services. • The intended audience is: • Communication providers (CPs) and resellers.

3. What’s been done to date? Consult21 - ensure industry is aware of the 21CN vision and BT’s progress towards it. Proof of process - consultation, engagement, transparency. Testing - lab tests. - test calls. - CPE compatibility tests. Pre-migration work – infrastructure, products. switched-on – the industry-wide, non-commercial campaign to communicate about the process of migration. ….and the migration has started!

4. Ynysowen Bedlinog Bargoed Mountain Ash Treorchy Ferndale Treharris Abercynon Nelson Hengoed Ynysybwl Tonypandy Pontycymmer Porth Senghenydd OgmoreValley Maesteg Pontypridd Caerphilly Tonyrefail Treforest NewtownLlantwit Aberkenfig Llanishen Taffs Well Kenfig Hill Llantrisant Pentyrch Llanedeyrn Pencoed Whitchurch Llanrumney Radyr Bridgend Porthcawl Llandaff Peterston-S-Ely Roath Cardiff Southerndown Cowbridge Culverhouse Bonvilston Wick DinasPowys Penarth Llantwit Major St Athan Barry Sully Rhoose end user migration boundary Pathfinder migration in south Wales

5. Customer migration is underway • The first customer migrations began on 28th November 06 in Wick, near Cardiff. • The principle of building up gradually, ensuring infrastructure and full testing at each stage, is supported by industry. • Customers in Cardiff, Bridgend and the Pontypridd area will be the next to have their services transferred. • By the end of 2007, around 350,000 lines in south Wales are expected to have been migrated to the new infrastructure. • Migration will be underway in all regions of the UK during 2008. • By the end of the decade 21CN migration will be substantially complete. • Customer experience is key to success.

6. The many facets of testing 100,000s • Proof of Concept • Vendors testing • Conformance Testing (CT), Multi-Vendor CT (MVCT) and Network Integration Testing (NIT) • Operational Support Systems (OSS) testing • Integration Verification & Validation Testing (IVV&T), end-to-end OSS testing • Infrastructure/network testing • NIT and First Office Application (FOA) • Service testing • User & Live Acceptance Testing (UAT/LAT), Service FOA (SFOA), Consult21 Conformance Testing Working Group, Experience Development Centre (EDC), CP test facility Swansea • Transfer engineering (TE) • Test tools and test automation Test numbers 10s Test complexity

7. Lab Testing • Network Integration Testing (NIT) and Verification and Validation (IVVT) • 600,000 tests (100,000) since November 2006. • 9,500 trouble reports cleared. • Test labs at Adastral and Swansea (BT) and Solihull, Guilford and Reading (vendors with BT). • Test model equivalent to 20% UK inner core capacity. • Customer Premise Equipment (CPE) • Hundreds of CPE tested in the LAB and Swansea CP test facility. • Industry invited to offer CPE for testing. • Results published in open forum to industry via Consult21 test database. • Test management & automation • Central management of all test cases. • Audit trail of test configuration. • Database of test results. • Test planning and statistics on test execution.

8. MSAN Data Centre Core Core Metro Metro MSAN CS Core Core Metro Metro DC CS FOA FOA Approach BRAS Element Managers and OSS BRAS Broadband Remote Access Server MSAN Multi Service Access Node FOA First Office Application IP Internet Protocol DC Data Centre CS Call Server Tx Transmission V Voice BB Broadband Infrastructure FOA Tx FOA BRAS FOA IP FOA V MSAN FOA BB MSAN FOA Voice Service FOA1 Operational Testing Broadband Service FOA1 Transfer Engineering FOA1 Data services FOA1

9. Activity schedule timeline example (Taken from Broadband)Scenario Activity Schedule - Fulfilment: Time OSS – Integration & Initiation Provide – Mixed Products Provide – BT Trial End-Users Home Movers – Incl. Sim. Provides Modify Cease Migration Management Information Systems BTW End to End Forced Failure Billing Customer Reporting c 150 Plus Scenarios

10. PHASE 1 Proof of Concept Trials / Lab Testing PHASE 2 Out of Service Trials (FOA1) • PHASE 3 • In Service / Live Trials • (Pathfinder / FOA2) TE trials and testing, three phased approach • Proving the manual/automated methods for preparing the frame for TE. • Producing quality procedures. • Testing the synthetics used in modelling resources. • Assessing the impacts on customer service. • Progressively introducing the testing and trialling of Voice, Broadband and ISDN, migration methodologies. • Use of business scenarios / test cases to provide end-to-end testing of migration.

11. Timetable update: South Wales Apr/May/June 07 July/Aug/Sept 07 Oct/Nov/Dec 07 Jan to June 08 July to Dec 08 Wick and Bedlinog for voice (non ISDN) Migration of voice (non ISDN) on next 12 exchanges (58,000 lines) Migration of voice (non ISDN) on next 55 exchanges (290,000 lines) ISDN Trials ISDN2 & 30 Migrations Broadband Migration trial in West Midlands South Wales Industry review period

12. Timetable update: Overall programme 2007/08* 2008/09* 2009/10* 2010/11* 2011/12* First stage of migration for POTS (South Wales) ISDN 2 and ISDN 30 (South Wales) National Migration Begins (Broadband lines initially) National migration (voice, non ISDN) National Migration (Voice, Broadband and ISDN) New enhanced testing capability available for industry service testing * Periods indicated are financial years, April to March.

13. Generic migration process Prepare the network Configure and verify On the night migration Monitor Transfer completion Connect to 21CN Data Extracted TransformLoad Pre-transfer Testing From 12 weeks prior Post transfer tests & monitoring Up to 7 days after Cutover to 21CN Data Activation Call Re Routing to 21CN On the night Frames Cleansed Data Audited Frame preparation From 36 to 12 weeks prior Our goal = seamless customer transfer to 21CN

14. 21CN – Principles of end user migration • Smooth switchover planned • Designed & scheduled in consultation with industry. • Every effort made to minimise end user disruption. • Acting responsibly • Migration control centre will manage transfer process. • Special measures for emergency and critical services. • Established incident procedures come into play for unforeseen circumstances.

15. Migration Command and Control structure End Customers End Customer Contact Centre (Communications Working Group) Communication Providers BTW Service Centres Network Management Centre Migration Control Centre • Core Business Functions: • Pre-Migration Management • Migration Management • Schedule Change Management • Fault Management • Fallback Management INFORMATION FLOW • Alarm Monitoring • 2nd / 3rd line fault support

16. 21CN migration process summary • Migration Timetable • The preparation of the network • Testing • Configure and verify • On the night migration via the MCC to deliver and execute • Monitoring • Transfer completion • Customer experience at the forefront of all we do • Engagement, open and transparent

17. http://21cntestingdb.bt.com/

18. WEBCALLSUpdate 18 April Product retirements 24 April 21CN overview 2 May Migration process 22 May CPE compatibility testing programme 31 May Switched-on communications campaign 27 Sept Migration portal overview

19. SOURCES OF FURTHER INFORMATION • Information and support for communication providers on the 21CN programme: http://www.btwholesale.com/consult21 • The independent public information website covering the process of migration: http://www.switchedonuk.org • For general information about BT’s 21CN programme go to: http://www.btplc.com/21CN/

20. Questions  Answers