Copper Mountain Announces New Full-Rate ADSL Line Card for Emerging European Broadband Market.

Business Editors/High-Tech Writers

DSLcon Europe 2000 Conference and Exposition

SAS Radisson Hotel

Booth No. 106

COPENHAGEN, Denmark--(BUSINESS WIRE)--Oct. 31, 2000

CopperEdge(R) Annex B Multi-Mode ADSL Line Card Will Enable Carriers

to Deliver DSL Service to European Customers Served by Integrated

Services Digital Network Phone Lines

Copper Mountain Networks, Inc. (Nasdaq:CMTN), a leading provider of Digital Subscriber Line (DSL) solutions for business and residential users, today announced a new Full-Rate Asymmetric Digital Subscriber Line (ADSL) Line Card that will enable European telecommunications companies to deliver simultaneous voice and broadband data services to customers served by Integrated Services Digital Network (ISDN) phone lines. Designed for use with Copper Mountain's CopperEdge(R) 200 and CopperEdge 150 DSL Concentrators, the new CopperEdge Annex B ADSL Line Card is expected to be fully compliant with Annex B of the International Telecommunications Union ITU-T recommendation G.992.1, which defines specific requirements for ADSL systems operating in the frequencies above baseband ISDN services.

The CopperEdge Annex B ADSL Line Card will enable carriers and service providers to offer consumers converged voice and data services over the same copper pair they currently use only for dial-up ISDN voice and data services. The CopperEdge Annex B ADSL Line Card will support 24 ports and feature user-downstream speeds of up to 6.144 Mbps, and upstream speeds as high as 640 kbps. Supporting ADSL service with both the 2B1Q ISDN line code (50kHz baseband) common throughout most of Europe, and the 4B3T ISDN line code (70kHz baseband) prevalent in Germany and parts of Austria, the CopperEdge Annex B ADSL Line Card will enable providers to utilize the advanced features of Copper Mountain's CopperEdge DSL concentrators to cost-effectively provision, scale and manage simultaneous voice and data services for millions of European subscribers who are currently served by ISDN phone lines.

"ISDN is widely deployed in Europe, especially in Western Europe and Scandinavia," said Sam Knight, Copper Mountain's director of international marketing. "The CopperEdge Annex B ADSL Line Card will enable carriers and DSL service providers who standardize on CopperEdge concentrators to aggressively expand their footprints throughout Europe's rapidly growing consumer broadband market. The CopperEdge Annex B ADSL Line Card is expected to be the first ITU-T Annex B-compliant, Full-Rate ADSL solution delivered from a DSL concentrator based on Internet Protocol (IP) intelligence. Our emphasis of support for interoperation with a wide range of third-party customer premise equipment (CPE) enables carriers to select from among best-in-class CPE vendors as they build their networks."

"Copper Mountain has consistently focused on developing practical solutions to meet broadband service providers' needs," said Shahin Bakhshandeh, chief technology officer of Netherlands-based VersaPoint, which has standardized on CopperEdge DSL concentrators to provision the first pan-European DSL broadband service. "Copper Mountain's CopperEdge Annex B ADSL Line Card will enableVersaPoint to leverage the provisioning and scaling advantages of our CopperEdge DSL concentrators to cost-effectively extend the reach of our DSL service to millions of customers in every European market where ISDN telephone service is deployed."

About the CopperEdge(R) Annex B ADSL Line Card

Designed for Copper Mountain's CopperEdge 200 and CopperEdge 150 DSL concentrators, the CopperEdge Annex B ADSL Line Card will be fully compliant with Annex B of the International Telecommunications Union ITU-T recommendation G.992.1, which supports the G.dmt ADSL variant of broadband service over ISDN. The CopperEdge Annex B ADSL Line Card will support up to 24 Full-Rate ADSL ports per card for maximum subscriber density. It employs next-generation silicon technology that reduces power requirements, increases deployable density, and allows the CopperEdge Annex B ADSL Line Card to simultaneously process four lines per chipset. The card will support Full-Rate ADSL at downstream transmit speeds of up to 6.144 Mbps and upstream transmit speeds of up to 640 kbps in Germany and parts of Austria, while allowing concurrent ISDN services on the same copper pair. The introduction of the Copper Mountain Annex B ADSL Line Card will allow customers to maintain their baseband voice and data ISDN services while adding high-speed DSL communications. The CopperEdge Annex B ADSL Line Card will be hot-swappable in CopperEdge 200 and CopperEdge 150 DSL concentrators, can run concurrently in the same chassis with Copper Mountain Full-Rate ADSL Annex A, G.lite, IDSL, and SDSL line cards, and is interoperable with integrated access devices (IADs) and a wide range of third-party CPE.

About the CopperEdge 200 and CopperEdge 150 DSL Concentrators

Copper Mountain's CopperEdge 200 DSL Concentrator is optimized for deployment in COs and very large multi-tenant unit (MTU) buildings, and supports up to 192 ports of voice and data services. The CopperEdge 150 DSL Concentrator is available in 24- and 48-port configurations and is ideal for deployment in small- and medium-sized MTUs. The CopperEdge 200 and 150 both support any combination of ADSL, G.lite, IDSL, and SDSL concurrently from a single chassis.

A remote-terminal (RT) version of the CopperEdge 200 is also available for deployment on digital loops, in hardened cabinets that house Digital Loop Carriers (DLCs). Designed to meet the rigorous demands of the remote environment, the CopperEdge 200 RT enables broadband providers to offer a full range of services -- including high-speed Internet access; multi-line, toll-quality packet-voice service; virtual private networks (VPNs); Frame Relay; video streaming; and emerging productivity and entertainment applications -- to business and residential customers who cannot be reached effectively from phone company central offices.

The CopperEdge 200, CopperEdge 200 RT, and CopperEdge 150 support multiple networking models, configurable on a port-by-port basis, including CopperVPN(TM), VWAN, Frame Relay or ATM multiplexing, PPP over Frame Relay (RFC 1973) and ATM, IP Policy and Full Routing. Equipped with IP IQ(TM), Copper Mountain's robust Internet Protocol (IP) service intelligence, they dynamically recognize user profiles and services at the IP layer and allocate network resources appropriately, enabling service providers to maximize bandwidth utilization, scale to meet the escalating demands of millions of subscribers and support advanced services such as voice, data and multi-cast traffic -- all without the problematic virtual circuit proliferation associated with Asynchronous Transfer Mode (ATM)-based solutions. Assured interoperability with a wide range of CPE, Integrated Access Devices, switches, routers and gateways through Copper Mountain's CopperCompatible(TM) program enables service providers to integrate the CopperEdge 200, CopperEdge 200 RT, and CopperEdge 150 seamlessly into best-in-class network platforms. Copper Mountain's CopperView(TM) Network Management Tools enable remote configuration, fault analysis and performance monitoring capabilities for thousands of DSL concentrators and companion CPE from a single, central location.

Pricing and Availability for the CopperEdge Annex B Full-Rate ADSL Line Card

Copper Mountain's CopperEdge Annex B Full-Rate ADSL Line Card will be generally available in January 2001 at a U.S. list price of $12,995.

About Copper Mountain Networks

Copper Mountain Networks, Inc. (Nasdaq:CMTN) manufactures DSL equipment for central office, digital loop and multi-tenant unit (MTU) broadband networks worldwide. Its DSL solutions enable carriers and service providers to deliver cost-effective, high-performance data and voice services over existing copper telephone wiring. Its CopperEdge(R) 200 DSL Concentrator is deployed in some of the world's largest public networks, and its environmentally hardened CopperEdge(R) RT (remote terminal) DSL Concentrator extends the reach of DSL to the millions of customers served by digital loop carriers (DLCs). Copper Mountain's OnPrem(TM) MTU Concentrator offers a cost-effective and scalable platform for MTU service providers. With IP IQ(TM), Copper Mountain's robust Internet Protocol (IP) service intelligence, service providers can maximize bandwidth utilization, support value-added broadband services, and scale to meet the demands of hundreds of thousands of subscribers. Copper Mountain's CopperRocket(R) CPE family and CopperCompatible(R) program ensure that Copper Mountain DSL concentrators are interoperable with the broadest range of customer premise equipment (CPE). Customers wanting more information about Copper Mountain products or office locations worldwide can contact Richard Washbourne at 650/687-3380 or visit the company's World Wide Web site at http://www.coppermountain.com. For investor relations information, call toll free 1.877.INFO.CMTN (463.6268) or contact the company at [e-mail].

Portions of this release contain forward-looking statements regarding future events and are subject to risks and uncertainties, such as factors which could affect future revenue and earnings. Copper Mountain wishes to caution you that there are some factors that could cause actual results to differ materially from the results indicated by such statements. These factors include, but are not limited to: rapid changes in the service provider landscape and among our CLEC customer base, quarterly fluctuations in operating results attributable to the timing and amount of orders for our products, factors affecting the rate of DSL deployment by our customers, market acceptance of our products, the concentration of our revenue in a small number of customers, our ability to penetrate the international, multi-tenant unit (MTU) and the incumbent telecommunications service provider (ILEC/IXC) market, risks related to integrating the operations and products of OnPrem Networks with our own operations and product offerings, risks related to our rapid growth, our ability to keep pace with rapidly changing product requirements, and factors affecting the demand for DSL technologies. We refer you to the documents Copper Mountain files from time to time with the Securities and Exchange Commission, specifically the section titled Risk Factors in our Annual Report on Form 10-K for the year ended Dec. 31, 1999 and other reports and filings made with the Securities and Exchange Commission.

Note to Editors: Copper Mountain and all Copper Mountain product names are trademarks of Copper Mountain Networks, Inc. All other marks are the property of their respective owners.