ZyXEL broadband access solution receives certification from Copper Mountain

CopperCompatible designation for Prestige 642 line opens additional markets for high-value DSL customer premises equipment

Placentia, November 13, 2000 - ZyXEL Communications, a leading designer and manufacturer of broadband access solutions, today announced that its Prestige 642 Series product line had received full compatibility certification from Copper Mountain Networks, Inc. (Nasdaq: CMTN), a leading provider of Digital Subscriber Line (DSL) solutions for business and residential users.

The "CopperCompatible" certification ensures buyers that ZyXEL's broadband access solutions are fully interoperable with service provider networks utilizing Copper Mountain equipment. The "CopperCompatible" program was created to help facilitate faster and broader market acceptance of DSL as a mainstream bandwidth delivery mechanism. With Copper Mountain's extensive installed base of DSL equipment, this certification gives customers on many of the world's most highly subscribed DSL networks the ability to take advantage of the Prestige 642 Series advanced features and superior value. Those networks include those of ICG, NorthPoint, Rhythms NetConnections, and UUnet/MCI/WorldCom.

"Copper Mountain is pleased to certify ZyXEL's Prestige 642 line as CopperCompatible," said John Nevius, product line manager, CPE at Copper Mountain. "We are pleased that DSL providers who have standardized on Copper Mountain DSL Concentrators will now be able to offer their customers ZyXEL's feature-rich router line."

"This is a very exciting time to be in the broadband Internet access business," said Munira Brooks, Vice President of Marketing and Business Development of ZyXEL USA. "We look forward to further extending our relationship with Copper Mountain as we continue to work together to support the access requirements of customers in a full range of target markets."

ZyXEL's Prestige 642 Series DSL Bridge/Router is a feature-rich, value-priced access solution specifically designed to meet the unique requirements of small office/home office and residential users, enabling high-speed Internet connections at speeds of up to 8Mbps. The Prestige 642 provides full-featured routing options, including IP/IPX routing, DHCP server and client support, IP Policy Routing, and IGMP for IP multicast. It also provides for highly automated setup and administration - a key requirement for large-scale DSL service roll-outs.

Copper Mountain had previously certified ZyXEL's Prestige P641 CopperCompatible.

About ZyXEL
ZyXEL Communications Co. (http://www.zyxel.com ), with its headquarters in Hsinchu, Taiwan, is a leading supplier of complete networking access solutions for Internet/Intranet/VPN/Extranet applications. Products developed by ZyXEL over the years are not only industry leaders, but consistently win acclaim and are selected by worldwide telecommunications companies, ISPs, and other major businesses. Network service providers served by ZyXEL now include Bell Atlantic , Chunghwa Telecom, EarthLink, France Telecom, Sprint, Telefó®©£a Brazil, Telia, and Verio.