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21CN Implementation & Strategy 21CN CORE TRIAL

21CN Implementation & Strategy 21CN CORE TRIAL. Keith Davies. 21CN NETWORK STRUCTURE VISION THE KEY NETWORK NODES & FUNCTIONS. Call servers. Analogue PSTN. IAD. Physical metro node location. Physical core node location. Distributor Node. Aggregator Node. Metro Node. Core Node.

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21CN Implementation & Strategy 21CN CORE TRIAL

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  1. 21CN Implementation & Strategy 21CN CORE TRIAL Keith Davies

  2. 21CN NETWORK STRUCTURE VISIONTHE KEY NETWORK NODES & FUNCTIONS Call servers Analogue PSTN IAD Physical metronode location Physical corenode location Distributor Node Aggregator Node Metro Node Core Node Derived voice MPLS core Inter-metro node traffic Call servers – located in data centres with signalling long-lined Separation to IP/MPLS core Gateways – to NGS Gateways – to PNOs Media servers MSAN – initially DSLAM with PSTN/Combo cards or DSL cards Cabinets / PCPs

  3. For PSTN features multimedia & mobility services (Including “Broadband Voice” business services) Terminal adaptor ADSLmodem Gateway to legacynetworks and PNOs Provider EdgeRouter For tones, announcements,conference, messaging… VOICE -ARCHITECTUREOVERLAY Data centre location Intelligence Call servers PSTN replacement MSAN TDM & IP logical interconnects Analogue POTS Metro node ISDN2/30 ISDN Gateway TA Modem DSL Media server DSL Consumervoice MPLS core PE router Businessvoice NTE Business data AggregatorNode

  4. TRIAL ARCHITECTUREOVERLAY POTS features Metro Node location ADSLmodem Call servers PSTN replacement MSAN Analogue TDM logical interconnects POTS & DSL Combi Card DSL Metro node Gateway to legacynetwork Gateway Modem Media server MPLS core PE router MSiP Provider EdgeRouter For tones, announcements,conference, messaging… LegacyIP network BRAS AggregatorNode

  5. TRIAL STAGES • Stage 1: PSTN Trunking • Stage 1a: Class 4 Route Bypass • Stage 1b: Class 4 Switch Bypass • Stage 2. PSTN local switching + Broad Band • Stage 2a: Class 5 MGCP PSTN ~1000 lines • Stage 2b: Class 5 H.248 ~ same 1000 lines • Stage 2c: Class 5 Multi-vendor MSAN 3000 lines • Stage 4: Class 5 FTTP Link ~1000 lines

  6. 21C TRIAL CORE NETWORK PSTN PSTN London Central EC PoP

  7. TRIAL SERVICES Stage 1 PSTN • All PSTN & ISDN call types • Exceptionally 999/112 traffic is not routed through trial

  8. TRIAL SERVICES Stage 2 PSTN Consumer Direct Exchange Line (Analogue POTS) • The capability to make 999/112 calls will not be a guaranteed facility • The following call types will NOT be available • a. Calls to the operator (100) • b. Non-geographic special rate (08) except those numbers required for the trial e.g. Service Centre number • c. Premium rate calls (09) • d. International calls (00) • Limited range of PSTN Calling Features • Note. All triallists are BT employees

  9. TRIAL SERVICES Stage 2 Broad Band Trialists within reach of the service, will, at an appropriate time in the trial be offered BT Broadband 512k service (with modem), which includes 512k broadband access and a Voyager 205 router.

  10. 21CN TRIAL LOCATIONS Stage 2a & 2b Service Locations Cambridge Trial Node & WAT Bypass (Stage 1b) Stage 1a Trunk Route Bypass Stage 2a &2b London Central EC Trial Node Stage 2c Woolwich Trial Node L/WOOD GREEN EMPIRE WAT

  11. TRIAL TIMELINE Present Milestones • Stage 1a)….in service • Stage 1b) traffic loading imminent, complete by year end • Stage 2a) customer on load during January 2005 • Stage 2b) April / May 2005 • Stage 2c) June 2005 • Stage 4. Summer 2005 • Trial closes December 2005

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