1. MSAN Industry Experts Group 4 November 2005 Martin Whewell openreach Product Design

2. Wholesale Line Rental NGN Access The PSTN/ISDN Line and its services.... Shared Metallic Path Facility Network CPs WLR Network Features Retail Lines Wholesale Calls Carrier Preselect Network CPs Call/Line Resellers Retail Calls Voice Messaging W’Sale 1571 Call Minder Voice Mail Call Mapping Voice Mail Text Messaging Mobiles IPStream Central Plus BT BB DataStream LLUOs ISPs BB Resale Access Network Wholesale Retail

3. Wholesale Line Rental NGN Access The PSTN/ISDN Line and its services.... Shared Metallic Path Facility Network CPs WLR Network Features Retail Lines Wholesale Calls Carrier Preselect Network CPs Call/Line Resellers Retail Calls Voice Messaging W’Sale 1571 Call Minder Voice Mail Call Mapping Voice Mail Text Messaging Mobiles IPStream Central Plus BT BB DataStream LLUOs ISPs BB Resale Access Network Wholesale Retail

4. Service Wrap Provision ­ Order for line through openreach B2B gateway ­ Real-time transactional ebXML ­ Line card and network configuration supplied to openreach by BT Wholesale ­ Multi-product orders and migrations as per WLR Repair ­ openreach B2B gateway ­ KCI Touch-points Billing ­ Consistent Line rental charges ­ Composite openreach bill Performance KPIs as per WLR

5. MSAN Voice Access Infrastructure Operator BT Access network And Point of Interconnect CP Application Providing service features Media handled & routed on CP network

6. MSAN Voice Access Infrastructure-less Operator BT Access network And Point of Interconnect CP Application Providing service features Media handled & routed on BT network

7. MSAN Voice Access - Open questions What are the advantages of MSAN Voice Access over WLR3 ? Product variations – Infrastructure / Infrastructure- less operators ? Scope – PSTN or ISDN too ? Degree of feature support needed via AGCF (Remembering that CP will need to build features into Call Control application) ? Complex flows – 3-way call etc – bridged on BT network on in CP’s ? Announcements – delivered by CP’s network or by BT ?