Future Voice Services Workshop 16th January 2008 Jo Upward Director 21CN Customer Experience

Agenda: 14:30 Welcome & Introductions 14:35 Engagement Approach & Timeline 14:50 Approach & Key Principles 15.10 Open discussion – Capturing the opportunities of future voice 17.15 Summary & Next Steps 17.30 Close

Our commitments Collaborating with you to develop future voice services Understanding and balancing the needs of the broad range of CPs LLU & Infrastructure players, SPs, Mobile & Cable TV providers as well as BTr For products and services and geographic rollout Fulfilling both our regulatory obligations and our commitments under TSR

Multi-laterally & bi-laterally Multi-laterally & bi-laterally Deployment Strategy & Future Voice Services: Timeline & process for engagement Nov / Dec 2007 Jan 2008 Feb/Mar 2008 Feb/Mar 2008 TBC 2008 Engagement with CPs to gain their views on: Future voice services Voluntary migration Principles of BT’s Deployment Strategy 2008/09 communicated BT confirms the principles it intends to adopt Detailed consultation continues Release of detailed roll-out strategy for voice Multi-laterally & bi-laterally Multi-laterally & bi-laterally

Engagement during January 16th January Voice Services Workshop for Consult21 Steering Board and significant voice product users (this workshop – invite only) 17th January (am) Managing Migrations @ IMWG 22nd January (am) Voice Services discussion @ Network Structure Working Group 22nd January (pm) Voice Services discussion for Line Access Working Group January (and beyond) Bi-laterals with voice players CP input used to shape BT’s thinking on: Future Voice Services BTs wider Deployment Strategy

Workshop Ethos & Approach CPs are being consulted ahead of any formal decision by BT to help shape BT plans Strawman approach to aid discussion on pro’s and con’s on options available Recognise and acknowledge different CP needs Guided by the key principles that BT outlined the last Steering Board

Ian Stirrat Director, 21CN Planning & Performance BT Design Deployment Strategy: Approach and Key Principles & responses to feedback Ian Stirrat Director, 21CN Planning & Performance BT Design

Overall 21CN Approach and Key Principles Overall objective unchanged: The delivery of a service independent core infrastructure that will enable services to be differentiated through the flexibility, control and intelligence that software can provide We will: look to deliver new services first, in advance of replicating existing services protect and enhance customer experience provide extended periods for voluntary customer upgrades to these new services, before moving to a technology migration of remaining customers build an open global and real-time platform on which new software services can be co-created with BT, or developed directly by our customers and third parties

Immediate Activity Areas Deliver new Data and Broadband products over a rapidly accelerating 21CN infrastructure Restart Pathfinder Continue to learn Review and progress best approach for Voice Progress our consultation with CPs

Infrastructure – Build out continues Site build schedule driven by demand Complete remaining UK footprint WBC footprint to 50% addressable market April 09 Introduction of Small site & Modular build capability Q3 08 Complete Transmission Infrastructure Q3 08 Complete Core & Metro Build Q2 08 Footprint for WBC 5% addressable market April 08

Pathfinder Bedlinog experience has been valuable Various service issues identified and resolved Restart when Customer Experience optimised: Software upgrades loaded before more DLEs loaded Gain further Customer Experience feedback: Validate Upgrade processes as new voice and other services are launched 21CN Performance with larger volumes Complete migration of both an AXE10 and System X Migration process and procedures Learning from full network configurations & Operational support learning Review scale and scope of Pathfinder subject to Voice approach

Voice Portfolio: Strategic Options Ian Hannah Director, Commercial Projects, BT Design Wolfgang Spinnler General Manager, 21CN Product Management, BT Design Dave Elmendorf Director, Service Execution Platform, BT Design

Creating a new voice services framework: the balancing act Enable Innovation & Differentiation to end users Consistency & ubiquity of end user services Exploit existing/NGN networks Access all or key segments of end users High degree of control over the end user service Optimising & integrating system & process devt roadmaps

Our Collective Opportunity To collaboratively develop a new framework for the NGN world that: Balances the needs of all CPs Enables BT to fulfil its obligations Create business opportunities Drives innovation to meet the evolving needs of consumer and business end users Builds confidence ahead of any network migrations We aim to conclude the analysis and share our proposed approach by March 2008 Today is a great opportunity for us all to fine tune our shared insights and understandings

The journey to create the new framework & your input What are the key attributes of the technical architecture necessary to support future voice services and the differing needs of UK CPs? What are CPs future voice capability needs that need to be satisfied by BT’s wholesale capabilities? What are the key features/services/attributes of future voice services for both business and consumer end users? What are the enablers which would make it attractive for you and your end user base to voluntarily migrate to those future voice services? What are you looking for in BT’s Deployment Strategy Plan to give you confidence in the achievability of its proposed future voice approach? Early migration National Migration What will enable you to migrate 80% of your end users to the new network (core voice?) What will enable you to migrate the remaining 20% of your end users to the new network (“core plus” voice?)

Moving forward today: We would like to explore 3 broad themes How quickly do we want to embrace the opportunities and challenges of this brave new world ? How do we create and sustain differentiation? How do we plan and manage the transition?

Complete Call Server (and Innovative Applications) How quickly do we want to embrace .. Broad Range of Potential Services for CPs Low-Level Dialed-Digit Primitives Complete Call Server (and Innovative Applications) Network-based CP SP 17 © British Telecommunications plc

Range of Potential Options for CPs © British Telecommunications plc CP with Call Server SP SP “Applications CP” CP has their own Call Server. They look to BT for virtual analogue lines Access to these lines (on BT’s MSAN’s) could be either at the SIP Proxy level or at a lower level “Virtual Line Control” level (e.g. access to switch hook, digit-at-a-time) P1 Communications Provider (CP) CRM, Billing Call Server Communications Provider (CP) CRM, Billing Communications Provider (CP) CRM, Billing Communications Provider (CP) CRM, Billing Apps P2 CP is a “SP” with account control for customer, and looks to BT for all network infrastructure including Call Server functions P1 P2 P3 P4 SIP, RTP (and L2C, T2R APIs) L2C, T2R APIs L2C, T2R APIs L2C, T2R & App. APIs Innovation Platform P3 CP is a “SP” with account control for customer, and looks to BT for all network infrastructure including Call Server functions. In addition, looks to BT to also provide advanced functionality (e.g. ‘Virtual Receptionist’ service) Standard Platform for Innovation Applications Voice Access (“Light”) Voice Features w/Optional Triggers Call Server - with Triggers Core & Core Plus Voice (“Heavy”) P4 CP is a “SP” with account control for customer, and looks to BT for all network infrastructure including Call Server functions. In addition, looks to BT to also provide advanced functionality (e.g. ‘Virtual Receptionist’ service) Also, the CP may implement their own applications to extend BT’s applications into a particular market segment/solution. (This is a new category of CP, an “Applications CP”) (Network Signaling: SIP-I, C7, but this signaling is not visible to CPs) IP/VPN Connectivity MSAN Baseband Line Card BB Broadband Baseband/Analog Voice with the Option for Broadband (IP) and Derived Voice (SIP, RTP, and Device-dependent CODECs) “Baseband Voice” “Derived Voice” 18

Range of Potential Options for CP © British Telecommunications plc CP with Call Server SP SP “Applications CP” Communications Provider (CP) CRM, Billing Call Server Communications Provider (CP) CRM, Billing Communications Provider (CP) CRM, Billing Communications Provider (CP) CRM, Billing Apps Several Options within Voice Access P1 P2 P3 L2C, T2R APIs P4 L2C, T2R & App. APIs SIP, RTP (and L2C, T2R APIs) L2C, T2R APIs Innovation Platform Standard Platform for Innovation Applications Voice Access (“Light”) Voice Features w/Optional Triggers Call Server - with Triggers Core & Core Plus Voice (“Heavy”) (Network Signaling: SIP-I, C7, but this signaling is not visible to CPs) IP/VPN Connectivity MSAN Baseband Line Card BB Baseband/Analog Voice with the Option for Broadband (IP) and Derived Voice (SIP, RTP, and Device-dependent CODECs) Broadband “Baseband Voice” “Derived Voice” 19 © British Telecommunications plc

Range of Potential Options for CP © British Telecommunications plc CP with Call Server Communications Provider (CP) CRM, Billing Call Server P1.1 Low level ‘dialed digit’ interface to CP P1 SIP, RTP (and L2C, T2R APIs) P1.2 Selective proxy of calls (e.g. BT handles emergency calls P1.3 BT behaves as SIP proxy MSAN IP/VPN Connectivity Voice Access (“Light”) Baseband Line Card BB Baseband/Analog Voice with the Option for Broadband (IP) and Derived Voice (SIP, RTP, and Device-dependent CODECs) Broadband “Baseband Voice” “Derived Voice” 20

End User Alternatives: Voice, Broadband, Converged © British Telecommunications plc End User Alternatives: Voice, Broadband, Converged CP with Call Server SP SP “Applications CP” Communications Provider (CP) CRM, Billing Call Server Communications Provider (CP) CRM, Billing Communications Provider (CP) CRM, Billing Communications Provider (CP) CRM, Billing Apps Each of these Products (P1-P4) have the option of being a converged product, and also provide Broadband connectivity to the customer. Broadband customers would have the option to receive one or more ‘derived’ voice channels. P1 P2 L2C, T2R APIs P3 P4 SIP, RTP (and L2C, T2R APIs) L2C, T2R APIs L2C, T2R & App. APIs Innovation Platform Standard Platform for Innovation Applications Voice Access (“Light”) Voice Features w/Optional Triggers Call Server - with Triggers Core & Core Plus Voice (“Heavy”) (Network Signaling: SIP-I, C7, but this signaling is not visible to CPs) IP/VPN Connectivity MSAN Baseband Line Card BB Voice, Broadband, Converged Baseband/Analog Voice with the Option for Broadband (IP) and Derived Voice (SIP, RTP, and Device-dependent CODECs) Broadband “Baseband Voice” “Derived Voice” 21

How do we create and sustain differentiation

Range of Potential Options for CP © British Telecommunications plc CP with Call Server SP SP “Applications CP” Communications Provider (CP) CRM, Billing Call Server Communications Provider (CP) CRM, Billing Communications Provider (CP) CRM, Billing Communications Provider (CP) CRM, Billing Apps BT’s SDK Domain BT’s SDKs allow Services to be Extended into specific market segments SDK provide robust toolkit, documentation, test cases, example code, so CPs can easily take advantage of BT’s APIs belonging to the Innovative Applications P1 P2 P3 L2C, T2R APIs P4 SIP, RTP (and L2C, T2R APIs) L2C, T2R APIs L2C, T2R & App. APIs Innovation Platform Standard Platform for Innovation Applications Voice Access (“Light”) Voice Features w/Optional Triggers Call Server - with Triggers Core & Core Plus Voice (“Heavy”) (Network Signaling: SIP-I, C7, but this signaling is not visible to CPs) IP/VPN Connectivity MSAN Baseband Line Card BB Baseband/Analog Voice with the Option for Broadband (IP) and Derived Voice (SIP, RTP, and Device-dependent CODECs) Broadband “Baseband Voice” “Derived Voice” 23 © British Telecommunications plc

Service Innovation Stack & SDK © British Telecommunications plc Platforms Technical Innovations Service Innovations SDKs Rapid Service Delivery (BSS/OSS) SOA BPEL Rapid Concept to Market and Micro Segmentation Web Services Portfolio Mgmt 21CN Innovation Platform SOA BPEL Communications Integrated w/ Applications Social Networks Mash-Up Web/SIP Convergence Speech Rec 21CN Call Server 21CN Call Triggers Rules-Engine Free On-Net and Extensibility to International 21CN Call Features Open Call Server Call Triggers 3rd Party Call Control Standard Media Servers IP/VPN Connectivity High Fidelity VoIP and Multiple derived voice channels IP/Internet Connectivity Global Reach Always-on Connections MSAN Baseband Line Card BB Powerful “Dashboards” via Devices Derived VoIP Advanced CODECs Broadband Access Media Gateways Devices Note: Most Significant “Innovation” is the ability to continually offer and modify communication applications that are open and can be tailored to specific customer groups and market segments. © British Telecommunications plc

How do we plan and manage the transition ?

How do we plan and manage the transition ? Emulate current world What opportunities does this create? What drives the CP decision making process for early migration? Create new basic voice service “80% of all end users use 20% of features” BT needs to innovate to meet it obligations in new way? national migration BT emulates some current services on 21CN? Early migration Opportunity for CPs to innovate to meet needs of specific market segments? Early migration