ADVISORY/Copper Mountain, 3Com, and TollBridge Kick Off Nine-City Seminar Series On In-Building DSL Market in San Jose.

News/Assignment Editors & High-Tech Writers

ADVISORY...for Wednesday (June 21)

--(BUSINESS WIRE)

Industry Leaders to Inform Property Owners/Managers, CLECs, and ISPs

on Leveraging DSL Opportunity in the MTU/MDU/Hotel Market

    WHO & WHAT:

      Copper Mountain Networks, Inc., (Nasdaq:CMTN), the market-share
    leader in business Digital Subscriber Line (DSL) equipment, will
    kick off its nine-city, half-day seminar series, in San Jose on
    June 21, 2000. The seminar series, entitled "Carpe Diem: Seize the
    Day," led by Copper Mountain in conjunction with partners 3Com
    Corporation and TollBridge Technologies, targets property
    owners/managers, Competitive Local Exchange Carriers (CLECs), and
    Internet Service Providers (ISPs). Copper Mountain and its
    partners will educate the attendees on leveraging DSL in the
    multi-tenant unit/multi-dwelling unit (MTU/MDU) and hotel
    marketplace.

      The Carpe Diem series will explain the basics of how and why it is
    profitable to deploy multi-service DSL in the commercial and
    residential multi-unit marketplace. Seminar attendees will gain
    insight into the market opportunity and business case for
    in-building DSL, maximization of ROI with multiple,
    revenue-generating services, ease of serving the multi-tenant
    marketplace, and the acceleration of DSL deployments.

    WHERE & WHEN:

    The Westin Santa Clara Hotel
    5101 Great America Parkway
    San Jose, California
    Wednesday, June 21, 2000
    Time:  8:30 AM-12:30 PM

      (Note: Other Carpe Diem seminar locations are Los Angeles, Denver,
    Dallas, Chicago, Toronto, New York, Washington, D.C., and Atlanta.
    A schedule of locations and dates is included in this media
    alert.)

    COMPANY BACKGROUND:

      Copper Mountain Networks, Inc., (Nasdaq:CMTN) develops and markets
    a comprehensive family of DSL solutions that enable high-speed
    internetworking over existing copper facilities. The company's
    mission is to enable carriers and other service providers to offer
    a full range of high-performance, cost-effective data and voice
    services over DSL that are easy to deploy, use, and manage. Copper
    Mountain's CopperRocket(R) CPE family addresses the bandwidth,
    reliability, ease-of-use, and cost concerns of remote offices and
    users. Its CopperEdge(R) and OnPrem(TM) DSL concentrators and
    CopperView(TM) network management solutions offer a robust and
    scalable platform that allows carriers and multi-tenant-unit
    service providers to generate a high return on investment while
    satisfying the ever-increasing user demand for bandwidth. For
    information about Copper Mountain products, visit the company's
    World Wide Web site at http://www.coppermountain.com.

      Seminar locations and dates

    San Jose, The Westin Santa Clara Hotel        Wednesday, June 21
    Los Angeles, Hyatt Regency at Macy's Plaza    Thursday, June 22
    Denver, Hyatt Regency Denver                  Friday, June 23
    Dallas, The Westin Hotel, Galleria            Tuesday, June 27
    Chicago, Hyatt Regency O'Hare                 Wednesday, June 28
    Toronto, Hilton Toronto                       Thursday, June 29
    New York, Millennium Broadway Hotel           Tuesday, July 11
    Washington D.C., J.W. Marriott Hotel          Wednesday, July 12
    Atlanta, The Ritz Carlton Atlanta             Thursday, July 13

Space is limited. Register now by calling (toll-free) 877/746-7955 or register online at www.coppermountain.com/carpediem.

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.