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


Centillium's CopperFlite ADSL Chipset is Building Block in Lucent Stinger LS DSL Access Concentrator Platform for Japan

FREMONT, Calif., January 15, 2001 - Centillium Communications, Inc. (Nasdaq: CTLM), innovator of broadband communications technology, today announced that Lucent Technologies has selected its CopperFlite Multi-mode Asymmetric Digital Subscriber Line (ADSL) chipset for deployment in Lucent's newly-developed Stinger LS DSL platform for the Japanese market. Lucent began deploying the Stinger LS--which is based on the company's original Stinger DSL platform but is adapted to meet the needs of the Japanese market--in September 2000. Centillium's CopperFlite Multi-mode chipset is the only field-proven ADSL chipset that conforms to the Annex C standard for Japan.

Annex C addresses the unique requirements for operating with Japan's existing telecommunications infrastructure, in which pulp insulation is commonly used and ISDN service is the norm. Pulp insulation and the prevalence of ISDN service significantly increase the adverse effect of crosstalk from other lines in the loop bundle, a serious barrier for the wide deployment of ADSL in such environments. Centillium's innovative and patented technology is the foundation of the Annex C standard that overcomes the crosstalk problem and enables Japanese carriers to deploy ADSL in the same bundles that contain ISDN.

"In order to adapt our highly successful Stinger DSL platform for use in Japan, we had to consider the unique requirements of the Japanese market," said Ashok Dhawan, President of Next Generation Access, Lucent Technologies. "One of the biggest technological challenges in Japan is the crosstalk interference between the large installed base of ISDN lines and newer ADSL lines. Centillium is the only field-proven chipset provider to offer both Fixed Bit Map (FBM) and Dual Bit Map (DBM) technologies to alleviate crosstalk problems. Centillium's CopperFlite ADSL chipset will give us the competitive edge we are looking for as we launch our DSL product line in the Japanese market."

"Centillium is the proven leader in Japan's ADSL market," said Shahin Hedayat, President, General Manager of Access Business Unit, Centillium Communications, Inc. "Because of our leadership in driving the Annex C standard development, and because we are the first and only ADSL chipset maker with field-proven products that conform to the standard, customers like Lucent know they can count on us to help them deliver the best of what DSL offers in Japan."

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 most recent Quarterly Report on Form 10-Q, which can be viewed at the Securities and Exchange Commission's website at

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