Centillium Communications, Inc.

For Centillium: For UNH InterOperability Lab:

Loralee Spence Michael Froning

(530) 676-8575 (603) 862-4105

[email protected] [email protected]

CENTILLIUM TECHNOLOGY JOINS MULTI-VENDOR ADSL CONSORTIUM
AT UNIVERSITY OF NEW HAMPSHIRE'S INTEROPERABILITY LABORATORY

FREMONT, Calif., July 13, 1999 - Deepening its commitment to international industry standards, Centillium Technology Corporation today announced that it has joined the Asymmetric Digital Subscriber Line (ADSL) Consortium of the InterOperability Laboratory located on the campus of the University of New Hampshire (UNH-IOL). The UNH-IOL ADSL Consortium tests G.lite (G.992.2) and G.dmt (G.992.1) networking equipment for multi-vendor interoperability to ITU standards and specifications.

Centillium plans to participate in future multi-vendor ADSL testing periods scheduled at the University of New Hampshire. In addition, Centillium will submit digital G.lite modems and central office/DLC line cards, based on its Optimizer™ and CopperLite™ chipset families, to help build an interoperability testbed at the UNH-IOL and to investigate interoperability with G.992.2-compliant networking equipment from other vendors.

"As one of the suppliers of G.lite technology, Centillium brings an additional perspective to the ADSL Consortium," said Scott Valcourt, ADSL Consortium Manager. "Centillium's involvement reinforces the necessity of interoperability as a key factor to ADSL's future success. The Laboratory provides an independent setting where engineers come to examine interoperability issues and solve problems in common surroundings, benefiting individual vendors as well as the ADSL industry as a whole. Companies using the laboratory generate significant gains from mutual interoperability testing and provide a valuable education to our students."

"Joining this well-respected independent testing organization will benefit our customers," said Faraj Aalaei, vice president of marketing and business development, Centillium Technology. "Membership in the UNH-IOL ADSL Consortium allows us to test interoperability with several vendors at once. It also enables us to identify specific conformance, management and configuration issues, speeding the time-to-market for our initial G.lite-compliant products, as well as future enhancements."

Centillium CO Chipset Solutions

The two-part CopperLite™ CO (central office) chipset consists of the CT-L21DC08 Digital chip and CT-L21AC08 Analog chip. Networking equipment manufacturers can use these cost-effective, power-efficient chip sets as the foundation for multi-port line cards in DLCs and DSL Access Multiplexers (DSLAMs), as well as next generation carrier-class platforms.

The CopperLite CO chipset is highly integrated and offers maximum port density, supporting up to eight DSL ports with just two chips. Very low power requirements help keep power dissipation to just 0.65 watts per port. The CopperLite chip set was recently used by Promatory Communications to build the industry's highest port density line card with 32 ports. Promotory's DSLAM can deliver 1000 G.lite ports in a standard 7-foot rack based on Centillium's chip set.

The CopperLite CO chipset is based on Centillium's software-upgradable Communications DSP, which ensures long product life cycles without the need for costly hardware upgrades. The chipset provides end users with high-bandwidth Internet access at speeds of 1536kbps downstream and 512kbps upstream over "Plain Old Telephone Service" (POTS) - or up to 27 times faster than conventional 56kbps analog modems.

Centillium CPE Chipset Solutions

Centillium recently announced the Optimizer™ USB chipset family, the most highly integrated, lowest power-consumption CPE chipset for consumer DSL modems. Based on third-generation patented technology, Centillium's Optimizer CPE chipset 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 CPE modems, while carriers and consumers can leverage the preferred Universal Serial Bus interface to ease the deployment of DSL services.

About the University of New Hampshire InterOperability Laboratory

The University of New Hampshire is the Land, Sea and Space Grant public university of the State of New Hampshire. The InterOperability Laboratory, founded in 1988, serves to educate students in computer communications technology and to foster interoperability within the 16 industry groups involved in the Laboratory. Over 100 worldwide companies are members of the UNH InterOperability Laboratory. For more information, visit the UNH InterOperability Laboratory at http://www.iol.unh.edu.

About Centillium Technology

Centillium Technology 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. Additional information is available at http://www.centillium.com.

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