1. IMPLEMENTATION & MIGRATION WORKING GROUP PROVISIONING EXPERTS MEETING Wednesday 1st March 2006

2. Health Warning The information in this presentation relates to plans currently under development and subject to consultation and may be subject to radical change at any time without notice. The information in this presentation is without prejudice to commercial and contractual discussions. It does not imply acceptance of the Virtual Interconnect Circuit product, System Alteration Notice process nor its associated contractual clauses agreed or otherwise or indeed anything remotely connected with 21CN. This information is not suitable for children or those of a nervous disposition. This information may contain nuts. This information is suitable for vegetarians.

3. New ACO - Segregated Route Option Objective of session is to: Show current example of route to BT DLE Explain how VIC circuits will be shown on ACO Show result of Cardiff (Pathfinder) changes Summarise results of the exercise

4. ntl's version of BT ACO has: Extra columns with exchange 'real names' Extra column with transmission identity in ntl terminology ‘Transmission Verifier’ sheet for easy checking of Sneids IEC check system (BT switch against Point of Connection) BT ACO v. ntl version of BT ACO

5. Cardiff (CF/REX/1) Cardiff DLE E (CF/UE) Cardiff Iolite NGS (CF/ILT) 2 E1s on Sneid A 2 E1s on Sneid B 4 E1s on Sneid C 2 E1s on Sneid D Egress/IDA route (total = 10 E1s) Existing Egress, IDA, Ingress etc routes on six Sneids Migration Cardiff DLE Unit E (CF/UE) Today Note: NTS connection not shown

6. Cardiff (CF/REX/1) Cardiff DLE E (CF/UE) Cardiff Iolite NGS (CF/ILT) 2 E1s on Sneid A 2 E1s on Sneid B 4 E1s on Sneid C 2 E1s on Sneid D Egress/IDA route (total = 10 E1s) Existing Egress, IDA, Ingress etc routes on six Sneids Migration Cardiff DLE Unit E (CF/UE) Traffic removed from DLE route & segregated route(s) built Note: NTS connection not shown

7. Cardiff (CF/REX/1) Cardiff DLE E (CF/UE) Cardiff Iolite NGS (CF/ILT) Migration Cardiff DLE Unit E (CF/UE) New route jumpered on existing transmission 2 E1s on Sneid A 2 E1s on Sneid B 4 E1s on Sneid C 2 E1s on Sneid D Egress/IDA route (total = 10 E1s) Existing Egress, IDA, Ingress etc routes on six Sneids Note: NTS connection not shown

8. Cardiff (CF/REX/1) Cardiff DLE E (CF/UE) Cardiff Iolite NGS (CF/ILT) Migration Cardiff DLE Unit E (CF/UE) Traffic re-instated & old route data recovered 2 E1s on Sneid A 2 E1s on Sneid B 4 E1s on Sneid C 2 E1s on Sneid D Egress/IDA route (total = 10 E1s) Existing Egress, IDA, Ingress etc routes on six Sneids Note: NTS connection not shown

9. Today’s ACO: connections to CF/UE

10. ACO showing CF/UE virtual connections

11. Amended ACO (part) for Cardiff

12. SUMMARY New ACO format is manageable May be thousand or more additional rows…... Open to errors - no easy checking mechanism Excel not user friendly - need Access to manipulate data Poor data integrity using Excel: - no history log - no audit trail for changes