Tom McKee Loralee Spence
Centillium Communications, Inc L2 Public Relations
(510) 771-3446 (530) 676-8575
[email protected] [email protected]



Centillium CopperLite and Optimizer Chipset Solutions Support G.992.2 "Annex C" Specification, Accelerating Rollout of DSL Services in Japan

FREMONT, Calif., October 19, 1999 -
Centillium Communications, Inc. extended its commitment to international industry standards today by announcing new CopperLite™ and Optimizer™ chipset solutions that support Annex C of the ADSL G.lite (ITU-T G.992.2) standard. Annex C addresses the unique characteristics of copper loop plants in Japan, which require different modem and central office technology than plants in the United States (Annex A). These characteristics include paper insulation for copper wiring and widespread deployment of TCM-ISDN systems. Annex C describes specifications that solve line interference issues and allow an ADSL system to coexist with TCM-ISDN in the same binder.

Centillium is the first and only company to make G.992.2 Annex C chipset solutions available to manufacturers of DSL equipment like modems and DSL access multiplexers (DSLAMs). Now these companies can sell their products into the networking equipment market in Japan, accelerating the rollout of DSL services in the world's second largest economy. Momentum is rapidly building for ADSL G.lite services in Japan, led by NTT's announcement of plans to begin rolling out a commercial ADSL service in the third quarter of 1999. NTT has selected Sumitomo Electric and other major Japanese networking equipment manufacturers to supply DSLAM equipment based on Centillium's CopperLite chipset solutions. The service offers a downstream rate of 500Kbps and an upstream rate of 200Kbps in the Tokyo and Osaka metropolitan areas.

"Centillium has been in production with the Annex C product for a few months now," said Faraj Aalaei, co-founder and vice president of marketing for Centillium Communications. "We worked very closely with our partners and customers in Japan to develop a chipset solution that overcomes the interference issues specific to Japanese copper loop plants. As a result, equipment manufacturers can confidently use Centillium chipsets as the foundation for building ADSL G.lite products that provide high-performance Internet connectivity all over the world, including Japan. In fact, modems based on the Optimizer chipset are the first to deliver ADSL G.lite connectivity anywhere around the globe."

"The opportunity for DSL services in Japan is enormous," said Laurie Falconer, DSL Analyst, TeleChoice, Inc. "Unlike the U.S. market, the Japanese residential market does not have a pervasive coaxial cable infrastructure capable of being upgraded to handle broadband communications. DSL is the only technology that will permit broadband network access from the home in Japan and availability of Centillium's CopperLite chipset solutions will help speed the rollout of services."

Centillium Chipset Solutions Support G.992.2 Annex A and Annex C
Centillium's CopperLite Central Office (CO) CT-L41SC04 and Optimizer™ Customer Premises Equipment (CPE) CT-L42SU15 chipsets are the industry's highest performance, lowest power dissipation ADSL G.lite solutions specifically designed for mass consumer markets.

Centillium has developed patent-pending software technology that implements either G.992.2 Annex A or G.992.2 Annex C specifications on a single hardware platform. This provides telecom equipment manufacturers with enormous flexibility, allowing them to design a single line card for carriers in Japan and the rest of the world. The CopperLite CT-L41SC04 eliminates costly infrastructure upgrades by offering the industry's lowest power consumption (600 mwatts /per port) and ensures software upgradability over time by delivering ample processing power.

Centillium's flexible hardware platform also allows end users to utilize a single ADSL G.lite modem anywhere around the globe. Centillium's Optimizer chipset family is the most highly integrated, lowest power-consumption CPE solution for consumer DSL modems. Based on third-generation patented technology, the Optimizer CT-L42SU15 dramatically reduces the cost, form factor, and power usage normally associated with DSL modems. For the first time ever, modem manufacturers can develop business card-sized G.lite ADSL modems, while carriers and consumers can leverage the preferred Universal Serial Bus interface to ease the deployment of DSL services.

About Centillium Communications
Centillium Communications, Inc. is a communication solutions company dedicated to delivering high-speed Internet access to bandwidth-hungry businesses and consumers. The company designs and markets Digital Subscriber Line (DSL) chipset solutions for central office equipment, DLC line cards, and customer premises equipment. Centillium's chipset family is the industry's highest port density, lowest power dissipation solution available to networking equipment manufacturers today. Centillium Communications, Inc. is located at 47211 Lakeview Blvd., Fremont, CA 94538. Additional information is available at For sales information, contact Al Gharakhanian at (510) 771-3418.

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©1999 Centillium Communications, Inc. CopperLite is a trademark of Centillium Communications, Inc. All other products or service names mentioned herein are the property of their respective owners.

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