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Going faster and staying in control - Building the world’s biggest NGN

In this session, Tim Hubbard, Head of Technology Futures at BT, will discuss the technology, architecture, and delivery program of BT's 21CN, the potential opportunities enabled by it, and the implications for BT's business and systems.

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Going faster and staying in control - Building the world’s biggest NGN

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  1. Going faster and staying in control- Building the world’s biggest NGN Tim Hubbard Head of Technology Futures

  2. During the next 60 minutes I propose to discuss:- Why did BT begin 21CN An introduction to 21CN: the technology, architecture and delivery programme The potential opportunities enabled by 21CN

  3. 21CN Setting some context

  4. MSC MSC Signalling and Speech traffic DSC DSC Call control DLE DLE Conc Conc PSTN BT’s network architecture today PSTN PSTN PSTN DPCN DPCN Copper KiloStream ATM ATM DSL IP IP Fibre SDH SDH - - MSH MSH SDH - mesh SDH - mesh DWSS PDH PDH Today

  5. 21C Customer Experience Web21C Core network convergence Remake the Portfolio 21CN it’s big and bold Not simply network transformation…a radical overhaul of BT’s business and systems Supporting a fundamental shift in customers’ new requirements and expectations

  6. PSTN PSTN PSTN DPCN DPCN Copper KiloStream ATM ATM DSL IP IP Fibre SDH SDH - - MSH MSH SDH - mesh SDH - mesh DWSS PDH PDH Today Multi - service access Converged core Copper Call Control WWW Ethernet Backhaul IP/MPLS Fibre & Copper MSAN I/connects Content ISP Wireless 21CN Other CPs Current thinking. No implementation assurances 21CN evolution Massive network simplification

  7. Call Server: Carries out “call control” by setting up and tearing down multi media communications sessions, etc Directory: Holds all numbers, whether they are on 21CN, legacy PSTN, other CP network, etc MSAN: delivers either copper based, fibre based or wireless based services to end customers Session Border Controllers: Gateway for customer traffic between 21CN and legacy PSTN/other CP networks MSAN: Country specific MSAN: Converts analogue PSTN speech into VoIP Signalling Firewalls: Gateway for signalling traffic to/from 21CN and legacy PSTN and other CP networks BRAS: Broadband service delivery point (mainly UK) MSAN: Copper version has “combi card” functioning as DSLAM for broadband and concentrator for PSTN Other CPs 21CN network architecture Multi - service access Converged core Call Control Copper WWW Ethernet Backhaul IP/MPLS Fibre & Copper MSAN ISP Content Wireless

  8. 21CN Separating speech and control Metro/Core 21CN MSAN PSTN OCP MSAN

  9. 21CN Resilience Service Network MSAN Metro Core • UK government approved principles applied to 21CN globally • Physical and logical resilience • Services “homed” to two discrete source points • Service and network availability and quality at least equal to traditional services De-couple each “layer”

  10. Comms Providers Point of Interconnect End customer service (any CP) Openreach Network Backhaul Services portfolio BT Services Infrastructure (BTD/BTO) 21CN Equivalence of Input Last mile access End Users MSAN IP/MPLS Core Metro/Core POP MSAN POP Perceived areas of bottleneck by regulator

  11. 21CN progress Customer led Wholesale Ethernet service delivery in the UK (Jan 08) Service led Broadband migration in the UK started (Oct 07) PSTN Pathfinder progressing in South Wales 35% of UK national infrastructure operational Develop and test brand new product portfolio Delivered to 164 countries globally Shift to customer led migrations

  12. End customer site Access network copper pairs 21CN MSAN ISDN • Deployment of BTs NGN 21CN migration process BT serving exchange building DSLAM 20CN PSTN switch Main frame • Disconnect copper pairs from 20CN and re-connect onto 21CN • No change to CPE • No change to home or office wiring • No change to copper access network • No need for end customer site visit

  13. 21CN architecture blueprint Customers Configuration of products & services SDK (BT & 3rd party applications) Assembly of services & processes Capabilities Software Development Platform Service Creation Engine Management & IT Global platforms 21CN global network platform

  14. Non BT PSTN Non BT Broadband BGWs Non BT PSTN (CP control) Gateways (B/Band) Non BT PSTN and Broadband Gateways Control (PSTN) Enabling new levels of competition PSTN Call Server To other CPs To other CPs CMSAN To other CPs 21CN Backhaul Network Metro Node MSAN

  15. Going forward with 21CN??- potential services Personalised infotainment and product bundling to customers Service delivery from a “single point” Third party service “mash in” and “plug in” through open APIs and SDKs Discrete personalised advertising Global, virtual supply chains

  16. Current challenges being addressed Implications of UK NGA consultation OSS convergence

  17. In conclusion • 21CN is carrier grade, secure and industrialised • Customer experience on 21CN is paramount • 21CN moves BT from service specific platforms to multi service platform, delivering massive simplification • 21CN is enabling new service delivery over a global, real time, open platform

  18. Questions  Answers

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