Louisville, Colorado, October 20, 2000—Cable Television Laboratories, Inc. (CableLabs®) announced today that it has awarded CableLabs® Certified™ cable modem status to four modems. CIS and Net & Sys Co., Ltd., are new suppliers to receive certified status. The other companies - Ambit and Cisco Systems, previously had modems certified.

These announcements mean that 38 companies now have achieved certified status for about 100 cable high-speed data devices. Included in this ever increasing array of certified cable modems are two PCI modems, which manufacturers build inside personal computers.

Certified modems are identifiable by a �CableLabs® Certified™" seal. This seal informs consumers and cable operators that a modem complies with the CableLabs� cable modem specification. It also assures that it will communicate (interoperate) with qualified CMTSs, which are being deployed worldwide.

There are numerous regional deployments by cable operators on their broadband networks using cable modem products from the more than one dozen companies producing CableLabs® Certified™ cable modems. The cable industry has created a complete retail certification standard in its data modem program from a standing start four years ago.

A Certification Review Board, comprised of representatives of CableLabs member companies, grants certification status to DOCSIS™-compliant modems, and qualified status to headend equipment, based on lab tests completed by CableLabs as well as on field data. Certification to this point has focused solely on DOCSIS 1.0 products.

The effort has achieved widespread cable and vendor consensus on a series of definitions of key interconnection points in a cable data distribution network. It also has achieved North American (by the Society of Cable Telecommunications Engineers) and international (by the International Telecommunications Union) standardization using key elements of DOCSIS.

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 and www.ebif.tv.

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.