Comcast, Broadcom and Ucentric Team Up To Trial Leading-Edge Home Media Distribution Technology.

Business Editors/Technology Writers

IBC 2002

MAYNARD, Mass.--(BUSINESS WIRE)--Sept. 9, 2002

Reliable, Cost-Effective Multi-Media Coax Networking Solution for

'Whole-Home' Services Delivery for Cable Operators

Comcast Corporation (Nasdaq:CMSCK)(Nasdaq:CMCSA), Broadcom Corporation (Nasdaq:BRCM), and Ucentric Systems today announced plans for a joint trial in Philadelphia that uses cable television in-home coaxial infrastructure and Home Phone line Networking Alliance (HomePNATM) technology to create a home networking solution capable of delivering robust multi-media traffic and services.

Broadcom's HomePNA iLine32(TM) chip provides the physical and Quality of Service (QoS) protocol layer of the network over existing coaxial cable. Ucentric's Home Media LAN software provides the software layer.

This is the second Comcast and Ucentric trial. The first Ucentric software trial was announced in October 2001, and is ongoing. HomePNA over coax brings a reliable and cost-effective technology to the 'whole-home' entertainment service offering. The HomePNA standard has historically and successfully used telephone lines to create home networks and is now being extended to coax. The trial is an important step in validating the application of HomePNA to networking over coaxial applications.

"Comcast is committed to providing its customers with the best services and technologies. High-quality, cost-effective home digital media distribution that is simple to work with in the field will provide the basis for deployment of advanced services to consumers. The depth of experience and expertise that Broadcom and Ucentric bring is a tremendous asset as we continue our commitment to the most innovative developments in digital home entertainment," said Steve Craddock, senior vice president of New Media Development for Comcast.

"We view HomePNA over coax as a significant development in home media distribution for cable operators," said Michael Collette, chief executive officer, Ucentric Systems. "We now have a cost-efficient, standards-based solution with enough bandwidth to run advanced video solutions. Using existing coaxial cable in the home, operators can offer consumers new, advanced services, such as Multi-TV Personal Video Recording, which offers new consumer benefits while at the same time eliminates the need to purchase separate PVR boxes for each television. Working with a known medium like coax also significantly eases the deployment process at the system level."

"We are pleased to be working with Comcast and Ucentric to demonstrate today the promise of IP-based distribution of video throughout the home. Broadcom's iLine32 HomePNA over coax solution is reliable, predictable and cost-effective, vital attributes as service providers like Comcast look to reach multiple rooms in customers' homes with advanced, on-demand services, such as Multi-TV PVR," said Tim Lindenfelser, vice president and general manager of Broadcom's Broadband Communications Business Unit.

Ucentric and Broadcom will demonstrate Multi-TV PVR delivered using HomePNA over coax at the International Broadcasting Convention (IBC2002) in Amsterdam, Sept. 13-17, 2002.

About the Companies

Comcast Corporation

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.

Broadcom Corporation

Broadcom Corporation is the leading provider of highly integrated silicon solutions that enable broadband communications and networking of voice, video and data services. Using proprietary technologies and advanced design methodologies, Broadcom designs, develops and supplies complete system-on-a-chip solutions and related hardware and software applications for every major broadband communications market. Our diverse product portfolio includes solutions for digital cable and satellite set-top boxes; cable and DSL modems and residential gateways; high-speed transmission and switching for local, metropolitan and wide area networking; home and wireless networking; cellular and terrestrial wireless communications; Voice over Internet Protocol (VoIP) gateway and telephony systems; broadband network processors; and SystemI/O(TM) server solutions. These technologies and products support our core mission: Connecting everything(TM). Broadcom is headquartered in Irvine, Calif., and may be contacted at 949/450-8700 or at www.broadcom.com.

Ucentric Systems

Founded in 1999, Ucentric Systems is the leading provider of unbranded multi-TV PVR applications and media distribution software for the service provider marketplace. Multi-TV PVR applications are designed to make the lives of consumers richer, simpler and more convenient. With Ucentric software integrated into set-top boxes, service providers can more cost effectively drive profitable top-line growth through new services, deploy proven digital entertainment services, and reduce churn. Ucentric, based in Massachusetts, is backed by Polaris Venture Partners and Pilot House Ventures. For more information about Ucentric, please visit www.ucentric.com.

Safe Harbor Statement of Broadcom Corporation under the Private Securities Litigation Reform Act of 1995:

All statements included or incorporated by reference in this release, other than statements or characterizations of historical fact, are forward-looking statements. These forward-looking statements are based on our current expectations, estimates and projections about our industry, management's beliefs, and certain assumptions made by us. Forward-looking statements can often be identified by words such as "anticipates," "expects," "intends," "plans," "predicts," "believes," "seeks," "estimates," "may," "will," "should," "would," "potential," "continue," similar expressions, and variations or negatives of these words. In addition, any statements that refer to expectations, projections or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking statements. These forward-looking statements speak only as of the date hereof, and are based upon the information available to us at this time. Such information is subject to change, and we will not necessarily inform you of such changes. These statements are not guarantees of future performance and are subject to risks, uncertainties and assumptions that are difficult to predict. Therefore, our actual results could differ materially and adversely from those expressed in any forward-looking statements as a result of various factors. Our Annual Report on Form 10-K, subsequent Quarterly Reports on Form 10-Q, recent Current Reports on Form 8-K, and other Securities and Exchange Commission filings discuss some of the important risk factors that could contribute to such differences or otherwise affect our business, results of operations and financial condition. We undertake no obligation to revise or update publicly any forward-looking statement for any reason.

Broadcom(R), the pulse logo, Connecting everything(TM), iLine32(TM) and SystemI/O(TM) are trademarks of Broadcom Corporation and/or its affiliates in the United States and certain other countries. HomePNA(TM) is a trademark of the Home Phoneline Networking Alliance. All other trademarks mentioned are the property of their respective owners.