1. Introduction to Cable Telephony Craig Lee VP of Marketing Nuera Communications www.nuera.com

2. Cable Telephony Technology –Hybrid VoIP –Softswitch-controlled –CBR (Constant Bit Rate) CableLabs/PacketCable Market Forecast Business Case

3. Broadband Access (Hybrid 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 CMTS Cable Modem DSL Modem Local Exchange GR-303/V5.2 Gateway

4. PacketCable Architecture Router Managed IP Backbone CMTS eMTA SYSLOG RKS DNS DHCP SNMP TFTP KDC Media Player Controller Gate Controller Call Agent Media Player PSTN Media Gateway Controller Media Gateway Signaling Gateway Call Management Server OSS Servers Media Servers PSTN Gateways HFC

5. Circuit-Switched Voice CBR (Constant Bit Rate)

6. Broadband Trunking PacketCable Full VoIP network architecture –Softswitch (CMS/MGC) control Platform for next generation services: IP centrex, unified messaging, “ follow me ” IP Network SS7 CMS/MGC LE Switch PSTN Application Servers Broadband Access Network TGCP BTX-8

7. Cable Television Laboratories, Inc. (CableLabs) –Founded in 1988 by members of the cable television industry –Funded by the monthly subscription fees paid by members as well as by testing-related fees. Nonprofit research and development consortium –Pursues new cable telecommunications technologies –Helps cable operators integrate those technical advancements into their business objectives. Serves the cable television industry by: –Researching and identifying new broadband technologies –Authoring specifications –Certifying products –Disseminating information

8. PacketCable Project PacketCable is a CableLabs-led initiative aimed at developing interoperable interface specifications for delivering advanced, real-time multimedia services over two-way cable plant. VoIP is the first service identified for delivery over the PacketCable architecture.

9. Addressable Cable Telephony Market Media Gateway Potential and Sales

10. Broadband Access Pricing GR-303/V5.2 Gateway Router DSLAM CMTS Cable Modem DSL Modem Local Exchange Gateway $40/sub Cable Modem $150/sub CMTS $60/sub