Alpine Communications Selects Copper Mountain's VantEdge Access BRAS; Iowa-based Independent Operating Company to Deploy VantEdge for Broadband Aggregation.

Business Editors/High-Tech Writers

PALO ALTO, Calif.--(BUSINESS WIRE)--Dec. 10, 2003

Copper Mountain Networks, Inc. (Nasdaq:CMTN), a leading provider of intelligent broadband access solutions, today announced that Alpine Communications, a Elkader, Iowa-based Independent Operating Company (IOC) and provider of local, long distance and broadband services, has standardized on the VantEdge(TM) Access BRAS for broadband aggregation.

Alpine Communications joins a growing list of IOCs who, after deploying Copper Mountain's CopperEdge DSLAMs, have selected the VantEdge Access BRAS for broadband aggregation. Specifically, Alpine Communications will deploy the VantEdge to aggregate its existing CopperEdge DSLAMs using the VantEdge's high density T1 Inverse Multiplexing over ATM (IMA) aggregation capability.

"We needed a low cost, scalable solution for broadband aggregation," said Tim Johnson, Plant Manager at Alpine Communications. "Our experience with the reliability of Copper Mountain's products, coupled with the fact that both the CopperEdge and VantEdge share a common, easy-to-use network management system, made our decision an easy one."

"Deployment of the VantEdge as a broadband aggregation platform is an attractive next step for our existing CopperEdge customers due to the integrated management capabilities of the two platforms," said Rick Gilbert, Chairman and Chief Executive Officer at Copper Mountain. "We are pleased that Alpine Communications has selected the VantEdge, and we expect more of our IOC customers to consider the VantEdge for broadband aggregation as their networks grow and as they look to enable value-added services."

About Copper Mountain Networks

Copper Mountain Networks, Inc. (Nasdaq:CMTN) is a leading provider of intelligent broadband access solutions. The company offers a broad set of subscriber access and broadband remote access server (BRAS) equipment for ILECs, IXCs, PTTs, CLECs, IOCs, and other facilities-based carrier networks worldwide. These products enable efficient and scalable deployment of advanced voice, video, and data services while leveraging existing network infrastructures and reducing both capital and operational costs. Copper Mountain's products have been proven in some of the world's largest broadband network deployments. For more information, please visit the company's World Wide Web site at http://www.coppermountain.com. For investor relations information, contact us at 858-410-7110 or [e-mail].

About Alpine Communications

Alpine Communications, L.C. is a full-service independent telecommunications company, doing business in Northeast Iowa. As a local telephone service provider, Alpine Communications offers a range of telecommunications services from Caller ID and Voice Mail to Internet, long distance plans and special circuits, plus everything in-between. Alpine Communications currently provides DSL and wireless high-speed Internet to customers throughout Northeast Iowa. Visit www.alpinecom.net for more information about Alpine Communications.

Copper Mountain Networks Safe Harbor Warning

Portions of this release contain forward-looking statements regarding future events based on current expectations. These forward-looking statements and other statements, such as statements regarding Copper Mountain's operating plan and financial projections; the capabilities of Copper Mountain's products; such products' interoperability with the multi-vendor operational environment of Copper Mountain's prospective large carrier customers; and the market opportunities for such products including, but not limited to, acceptance and deployment of these products by prospective customers; are subject to risks and uncertainties. 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: our ability to successfully introduce and commercialize our products; our ability to penetrate the independent operating company (IOC), incumbent local exchange carrier (ILEC), inter-exchange carrier (IXC), and international postal, telephone and telegraph (PTT) service provider markets with our products; our ability to initiate and successfully complete laboratory trials with our current and prospective customers; our ability to compete effectively with other vendors of telecommunications equipment; our ability to keep pace with rapidly changing product requirements; and factors affecting the demand for DSL technologies, operations support system technologies, and other broadband access technologies. Prospective investors are cautioned not to place undue reliance on such statements. Further, Copper Mountain expressly disclaims any obligation to update or revise any forward-looking statements or other statements contained herein to reflect future events or developments after the date hereof. 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 December 31, 2002, and other reports and filings made with the Securities and Exchange Commission.