Copper Mountain Announces VantEdge Solution for Emerging Ethernet and ATM FTTx Architectures.

PALO ALTO, Calif. -- New High Performance Forwarding Engine and OC-12c/STM-4 Module Enable High-Density FTTx Aggregation Solution

Copper Mountain Networks, Inc. (Nasdaq:CMTN), a leading provider of intelligent broadband access solutions, today introduced a new version of its VantEdge access aggregation platform to meet the service demands of Fiber to the Node/Curb/Premises (FTTx) architectures.

Large carriers worldwide are re-architecting their broadband access networks to provide broadcast video and video-on-demand services, and to support other advanced, value-added applications such as gaming and Voice over IP (VoIP). For example, SBC Communications recently announced that it may spend up to $6 billion over five years to deploy a FTTP/FTTN broadband network.

Many of these new carrier architectures will utilize multiple access technologies, including Passive Optical Network (PON) based fiber to the premises (FTTP) and fiber to the neighborhood DSLAM node (FTTN) configurations. As such, the DSLAMs are situated close enough to residences and businesses to have sufficient bandwidth for multiple video streams to subscribers. To aggregate these DSLAMs and PON devices and to manage the traffic and subscriber sessions, carriers will require a low-cost, high-density aggregation platform in the telco central offices. Purpose-built for central office deployment and powered by the new System Control Module -- Advanced Processing (SCM-AP), the VantEdge meets these demanding requirements.

"We are seeing increasing interest by large carriers in FTTx network architectures," said Erik Keith, Broadband Infrastructure Senior Analyst at Current Analysis. "In order to fulfill the growing demand for both higher bandwidth and advanced services such as IP TV and Video on Demand (VoD), we estimate that carriers will invest a substantial amount of capital in aggregation devices for these networks in the coming years, and the winning platforms will offer very high performance, a broad range of ATM, Ethernet, IP and PPP features, and high reliability -- at very low cost."

Fifteen months in development, the new SCM-AP is built on the latest network processor technology from Intel(R), the Intel IXP28xx series. The new forwarding engine is backward compatible with the existing VantEdge chassis and line modules, including Gigabit Ethernet, 100BaseT, OC-3c/STM1, DS3/E3, and T1/E1 interfaces. Recognizing that many carriers will continue to leverage their existing ATM infrastructures, the VantEdge now supports a 2-port OC-12c/STM-4 line module with built-in automatic protection switching and hot-pluggable transceivers. The VantEdge also includes features to accelerate the transition from ATM to Ethernet-based access technologies, which reduce the cost and increase the bandwidth in the access network.

"The carriers' new approach to FTTx architectures obsoletes traditional metro office and PoP-based BRAS approaches," said Mark Tiedeman, Vice President of Marketing for Copper Mountain. "The VantEdge was architected and cost-optimized for deployment at the outer edge of large carrier access networks. These enhancements to the VantEdge platform create a compelling, high performance and cost-effective edge aggregation solution for deployment in next generation FTTx networks."

The OC-12c/STM-4 line module is available now and the SCM-AP will be available in October 2004. For more information, contact your Copper Mountain sales representative or visit www.coppermountain.com.

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].

Safe Harbor Warning

Portions of this release contain forward-looking statements regarding future events based on current expectations and are subject to risks and uncertainties, such as statements regarding Copper Mountain's unproven operating plan, current and future capabilities of Copper Mountain's products, and customer acceptance of Copper Mountain's products. 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 the VantEdge product and the market acceptance of this product; our ability to form and maintain successful marketing and distribution relationships with strategic partners, value-added resellers and other distribution partners; our ability to penetrate the incumbent local exchange carrier (ILEC), inter-exchange carrier (IXC), international postal, telephone and telegraph (PTT), and independent operating company (IOC) service provider markets with the VantEdge product; our ability to commence and successfully complete laboratory trials with our current and prospective customers; our ability to realize sufficient revenues in the future to sustain our operations or achieve profitability on an annual or quarterly basis; the need for additional financing and risks related to obtaining adequate financing in the current market environment; factors which could affect our profit margins or lead to increased expenses; factors affecting the demand for DSL and other broadband technologies; general economic conditions, and the extent and timing of the economic recovery, which are beyond Copper Mountain's ability to control. Prospective investors are cautioned not to place undue reliance on such forward-looking statements. Further, Copper Mountain expressly disclaims any obligation to update or revise any forward-looking 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, 2003 and other reports and filings made and to be made with the Securities and Exchange Commission, including, but not limited to, our Quarterly Reports on Form 10-Q.

Copper Mountain and all Copper Mountain product names are trademarks of Copper Mountain Networks, Inc. Intel is a registered trademark of Intel Corporation or its subsidiaries in the United States and other countries. All other marks are the property of their respective owners.