Louisville, Colorado, August 16, 2004—CableLabs® announced today that it has awarded PacketCable™ certification status to three companies—Ambit, Cisco-Linksys, LLC, and Scientific-Atlanta—in its recently concluded Certification Wave 30. The wave only tested embedded multimedia terminal adapters (E-MTA). A total of four E-MTAs were awarded certified status—two products from Cisco-Linksys were certified in addition to one each from Ambit and Scientific-Atlanta.

The E-MTA is a consumer premises device in the PacketCable network architecture, and serves as a key element originating and terminating Internet Protocol (IP) voice calls.

PacketCable is a CableLabs-led initiative to define a common platform to deliver advanced real-time communication services, such as voice-over-Internet Protocol (VoIP), over two-way cable plant. Built on top of the industry�s DOCSIS® 1.1 (Data Over Cable Service Interface Specification) cable modem infrastructure, PacketCable networks use IP technology as the basis for a multimedia architecture. A DOCSIS 1.1 network with PacketCable extensions enables cable operators to deliver data and voice traffic efficiently and economically using a single high-speed, quality-of-service (QoS)-enabled broadband architecture.

The PacketCable initiative has followed a similar process to that employed in the successful DOCSIS program. Manufacturers that receive CableLabs certification or qualification for their E-MTA, cable modem termination system (CMTS), Call Management Server (CMS), Media Gateway Controller (MGC), or media gateway (MG), have successfully completed an extensive series of interoperability tests supported by CableLabs� membership. These PacketCable devices were tested for interoperability in combination with other PacketCable components.

CableLabs® Certified™ or CableLabs Qualified means that the device has passed a series of tests for compliance with the indicated version of PacketCable and has thus demonstrated interoperable functionality with other "CableLabs certified/qualified" devices. "CableLabs Certified" is awarded to devices that will be used in a residence or business. "CableLabs Qualified" is awarded to devices that are used in a cable operator's network. Many of these devices provide other functions or are designed to comply with other specifications, in each case tailored by the manufacturer to meet the growing needs of consumers or cable operators in an evolving communication/entertainment sector. While CableLabs encourages such innovation and diversity, the phrase CableLabs certified/qualified should not be understood as an endorsement of these other attributes (or that the product is certified to other specifications or versions), which are solely the responsibility of the company making the additional claims.

About CableLabs: Cable Television Laboratories (www.cablelabs.com) was founded in 1988 by members of the cable television industry. A non-profit research and development consortium, CableLabs delivers innovations that enable cable operators to be the providers of choice in their markets. Cable operators from around the world are members. CableLabs maintains additional web sites at www.cablenet.org.

CableLabs® is a registered trademark of Cable Television Laboratories, Inc. Other CableLabs marks are listed at http://www.cablelabs.com/certqual/trademarks. All other marks are the property of their respective owners.