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Cable Telephony & VoIP: SP-6Cable Telephony & VoIP: SP-6

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Agenda

Technology choices and issues CBR (Constant Bit Rate) Hybrid VoIP PacketCableTM VoIP SIP VoIP

Build versus outsource Cable telephony market forecast

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CBR - Constant Bit Rate(Circuit Switched)

NIU: Network Interface UnitHDT: Headend Digital TerminalCMTS: Cable Modem Termination System

Proprietary technology Over cable/HFC Provides same features and user experience as legacy networks Uses legacy billing systems, announcement servers and OSSs

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Hybrid VoIP(Circuit Switched and VoIP)

PacketCable LCS network architecture Over cable/HFC, DSL, fiber, wireless Provides same features and user experience as legacy networks Uses legacy billing systems, announcement servers and OSSs

Router

DSLAM

CMTSCableModem

DSLModem

LocalExchange

RDT-8GR-303

Gateway

PSTN

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PacketCable VoIP(Client/Server)

PacketCable VoIP network architecture Softswitch (CMS/MGC) control Secure voice and signaling E-911 and CALEA (wire tapping) compliant

IP Network

SS7

CMS/MGC

LESwitch

PSTN

MediaServers

Broadband Access Network

TGCP

BTX-8

NCS

NCS: Network Call SignalingTGCP: Trunking Gateway Control ProtocolCMS: Communications Management ServerMGC: Media Gateway Controller

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SIP VoIP(Peer to Peer)

Source: BroadSoft

IETF SIP architecture SIP application server control Open standard with broad range of services CALEA (wire tapping) compliance issues

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To Outsource or Not To Outsource

Outsource advantages• Many cable MSOs have no experience with telephony• Telephony service providers know how to offer reliable

service• Either way, offnet calls have to be handled by the PSTN• Lower capital expenditures

Outsource disadvantages• Who owns the customer? It has to be the cable

company.• Integrating billing systems: Customer gets one bill• Who gets the trouble call?• Cable company reputation in the hands of its outsourcer• Are you getting PacketCable compliant service?

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Outsource Issues

Outsource only call control Cable company owns media gateways Telco owns the softswitch

Outsource only off net media handling Cable company owns the softswitch Telco owns the media gateways

Outsource the whole VoIP network Integrate the billing and customer management

systems

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Market Forecast (IDC 2/04)

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Market Forecast(Friedman, Billings, Ramsey – 12/03)

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Thank You!

Larry GreensteinDirector of Product Management

Nuera Communications10445 Pacific Center Court

San Diego, CA 92121+1 (858) 625-2400

LGreenstein@nuera.comhttp://www.nuera.com