Philadelphia, PA - July 19, 2002 - Comcast Corporation today announced additional vendors for its previously released plans for deployment of Voice over Internet Protocol (VoIP) primary line phone service.

“This announcement brings Comcast one step closer to offering our customers another great product – residential voice service,” said Comcast Cable Communications President Steve Burke. “VoIP will play a significant part in Comcast’s future, and we’re pleased to help lead the way in bringing this service to consumers.”

Comcast’s initial deployment of its wireline VoIP voice service will run on Syndeo’s Syion™ 426 Call Management Server. This core element of the VoIP network will route packetized voice signals over facilities originally designed for data transmission, thus enabling Comcast to leverage its existing HFC (hybrid fiber-coax) network and back office operations to deliver both high-speed data and voice communications.

The additional vendors tentatively selected to supply remaining network components for Comcast’s initial VoIP service deployment are as follows: IP Unity Harmony6000™ Media Server platform will be used for automated announcements and to provide unified messaging service; Lucent Technologies VitalAccess™ software will provision the customer premises equipment; BayPackets RSI Mediate™ Record Keeping Server will process call events to create call detail records for billing and revenue assurance; Convergys ICOMS will be used for billing; Nuera ORCA® media gateway will provide the interface for voice traffic between the cable network and public switch telephone networks; Intel® SIU131 SS7 Signal Interface Unit™ will provide the interface for signaling between the cable network and signaling used by traditional telephone service providers. The Sigma™ Service Management Platform from Sigma Systems will seamlessly enable automated flowthrough service provisioning between Convergys, Syndeo, Lucent and IP Unity. Suppliers of the customer premises equipment have yet to be announced.
Each of the vendors participating in the deployment has committed to developing their respective products in compliance with PacketCable™ specifications. PacketCable is a CableLabs®-led initiative aimed at developing interoperable interface specifications for delivering advanced, real-time multimedia services over two-way cable plant. By deploying a PacketCable compliant platform, Comcast can ensure its IP phone service has the reliability, features and fidelity to which consumers are accustomed.

Previously Comcast announced that it has selected ARRIS to provide DOCSIS™ 1.1 carrier class CMTS equipment to manage the transmission and routing of IP voice packets with other data packets over the same cable network. Comcast plans to introduce IP phone service in a portion of the Philadelphia market in the second quarter of 2003. The exact location of and prices for the phone service have not been announced. Financial arrangements with vendors have not been disclosed. Comcast currently offers circuit-switched voice telephone service to about 40,000 customers in Michigan and Virginia.

About Comcast
Comcast Corporation (www.comcast.com) is principally involved in the development, management and operation of broadband cable networks, and in the provision of electronic commerce and programming content. Comcast Cable is the third largest cable company in the United States serving more than 8.5 million cable subscribers. Comcast's commerce and content businesses include majority ownership of QVC, Comcast-Spectacor, Comcast SportsNet, The Golf Channel, Outdoor Life Network, G4, a controlling interest in E! Networks, and other programming investments. Comcast's Class A Special and Class A Common Stock are traded on The Nasdaq Stock Market under the symbols CMCSK and CMCSA, respectively.

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