Laurie Falconer
Centillium Communications, Inc.
(510) 771-3647
[email protected]


Centillium Communications Included in Program to Integrate Copper Mountain's Technology into its Industry Leading Chipsets to Support Voice Over DSL

FREMONT, Calif., August 21, 2000 - Centillium Communications, Inc. (Nasdaq: CTLM), innovator of broadband communications technology, today announced an expansion of its relationship with Copper Mountain Networks, Inc. (Nasdaq: CMTN) to include participation in Copper Mountain's CopperSilicon Initiative. Centillium will incorporate Copper Mountain's intellectual property into its next-generation Customer Premise Equipment (CPE) and Central Office (CO) chipsets to ensure full interoperability of Centillium-based CPE with Copper Mountain's family of DSL concentrators.

Centillium Communications and Copper Mountain Networks have been partners for over a year in marketing DSL equipment. Copper Mountain currently utilizes Centillium's innovative chipsets in line cards for its widely deployed family of DSL concentrators, which support full rate, Turbo G.lite, and G.lite ADSL services. Via the CopperSilicon Initiative, Centillium and Copper Mountain will collaborate on development of equipment supporting the VoDSL service market.

"Centillium has worked closely with Copper Mountain in fulfilling the growing needs for innovative, next generation chipsets and we are pleased to be a part of the CopperSilicon Initiative," said Faraj Aalaei, CEO and co-founder, Centillium Communications. "The combination of the Copper Mountain intellectual property with Centillium's innovative broadband communications solutions is unbeatable in the market."

"We are very pleased that Centillium and Copper Mountain are expanding our relationship. By incorporating Copper Mountain technology into its next-generation VoDSL chipsets, Centillium will ensure that these chipsets are interoperable with Copper Mountain central office equipment," said Rick Gilbert, Copper Mountain's president and CEO. "Centillium's VoDSL chipsets are helping to make VoDSL technology even more affordable to service providers and their business customers."

About Centillium Communications
Centillium Communications, Inc. is combining technical innovation and customer commitment to make broadband communications a market reality. Centillium consistently delivers value to its customers by providing broadband networking systems for applications across all market segments. The company designs and markets communications chipset solutions for central office equipment, digital loop carrier (DLC) line cards, and customer premise equipment for Digital Subscriber Line (DSL), Voice over Packet (VoP) and Premise Networking. The Centillium Communications headquarters are located at 47211 Lakeview Blvd., Fremont, CA 94538. Additional information is available at

Forward Looking Statements
Except for historical information contained in this press release, the foregoing contains forward-looking statements that involve risks and uncertainties. Actual results may differ materially from those indicated by such forward-looking statements based on a variety of risks and uncertainties, including the risks and uncertainties relating to actual quantities and timing of any orders received under the contract and the successful development and market acceptance of Centillium's new products. The company assumes no obligation to update these forward-looking statements to reflect events or circumstances after the date hereof. Information about potential factors that could affect Centillium's financial results is included in Centillium's Annual Report on Form 10-K and most recent Quarterly Report on Form 10-Q, available for viewing on the Securities and Exchange Commission's website at

Centillium Communications and the Centillium logo are trademarks of Centillium Communications.

Copyright 2003 Centillium Communications, Inc. All rights reserved. All other products or service names mentioned herein are the property of their respective owners.

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