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Narrowband & IP Strategy

Narrowband & IP Strategy. Steve Wickenden & Dave Hughes 12 November 1999. Objectives. Explain issues for UK in current deployment of Narrowband Networks Describe NB capacity demand and supply Identify drivers for change Provide an overview of BT’s 2 year plan

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Narrowband & IP Strategy

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  1. Narrowband & IP Strategy Steve Wickenden & Dave Hughes 12 November 1999

  2. Objectives Explain issues for UK in current deployment of Narrowband Networks • Describe NB capacity demand and supply • Identify drivers for change • Provide an overview of BT’s 2 year plan Inform OPF of our Dial IP proposals • Provide an overview of Products and Pricing • Provide an overview of deployment plans

  3. DMSU DMSU DMSU WAT/ DJSU DLE DLE DLE Narrowband Core Network Topology 74 DMSUs (71 Sys X & 3 NGS) 33 DJSUs/WATs (32 Sys X & 1 NGS) 795 DLEs

  4. BT Plans to increase Narrowband Capacity • Next Generation Switch • Wide Area Tandems • DLE Tandems • Virtual Switch Location

  5. Next Generation Switch Replace System X DMSU/DJSU/WATs in fully interconnected single tier network. • First switch operational 9/99 • 3 switches now operational • 6 switches operational 11/99 • 11 switches operational 3/00 • 39 switches operational 3/01

  6. Wide Area Tandems Provide access to/from directly connected BT Local Exchanges • 16 operational at 10/99 DLE Tandems Provide access to/from directly connected BT Local Exchanges • First switch operational 4/00 • 80 switches operational 9/00

  7. Virtual Switch Locations Standard Interconnect Link BT Switch A Operator Network P O C BT Switch B Temporary Extension Circuit • Operators will interconnect temporarily with a switch other than that requested - switch B rather than switch A • BT meets costs of extending the Operators interconnect link to the offered switch • BT meets costs of connecting Operators to requested switch when this is • replaced by NGS

  8. BT Narrowband Demand Drivers • Future demand is not “more of the same” • PSTN future demand mix will be increasingly • dominated by interconnect calls • Interconnect demand is being dominated by • Internet calls

  9. Core Network “In Use” Capacity Growth 100000 90000 80000 70000 60000 50000 40000 30000 20000 10000 0 2Mbits Oct-98 Apr-99 Oct-99 Apr-00 May-99 May-00 Jul-99 Jul-00 Aug-98 Nov-98 Aug-99 Nov-99 Aug-00 Feb-99 Mar-99 Feb-00 Mar-00 Jan-99 Jun-99 Jan-00 Jun-00 Sep-98 Dec-98 Sep-99 Dec-99 BT to BT OLO Internet Other OLO

  10. OLO Forecasts of Interconnect Capacity for Internet Calls 30000 25000 20000 2 mbits 15000 10000 5000 0 Dec-98 Mar-99 Jun-99 Sep-99 Dec-99 Mar-00 Jun-00 Sep-00 06/98 Forecast 10/98 Forecast 03/99 Forecast  06/99 Forecast 09/99 Forecast 09/00 Projected Outturn

  11. Narrowband Switch Limitations • Not appropriate for long duration calls • Inefficient transport for IP calls • Higher unit costs compared to equivalent IP technology • Narrowband solution may not deliver the optimum • consumer prices

  12. Summary 1. BT’s plans will meet immediate demands on the narrowband network 2. Calls to the internet are driving the expansion of the BT and Operator Narrowband networks 3. Narrowband switches are not the best technology to use for volume growth of Dial IP traffic 4. The Internet explosion could drive IP investment to support Broadband Britain

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