Com21 Announces Fourth Quarter Revenue Range.

MILPITAS, Calif. -- Com21, Inc. , a leading global provider of system solutions for the broadband access market, announced today that its revenues for the fourth quarter of 2001 will be slightly down from earlier estimates, and will be in the $25 million to $26 million range. The Company previously announced that its revenues would fall between $28 million and $30 million for the quarter.

"We are pleased with the higher than anticipated sales of our ATM-based ComUNITY Access(R) System products," said George Merrick, Com21's president and CEO. "This increase, however, was offset by lower than expected DOCSIS modem sales, which caused our revenue to be slightly below our previous estimates."

Additional details of Com21's fourth quarter results will be reported during the Company's quarterly investor conference call, currently scheduled for Friday, January 18, 2002 at 5 p.m. Eastern Standard Time (10 p.m. Greenwich Mean Time). Access details for the conference call are forthcoming.

About Com21, Inc.

Com21, Inc. (http://www.com21.com/) is a leading global supplier of system solutions for the broadband access market. The Company's ATM, DOCSIS, EuroDOCSIS, and DVB-based products enable cable operators and service providers to deliver high-speed, cost-effective Internet and telephony applications to corporate telecommuters, small businesses, home offices, and residential users. To date, Com21 has shipped over 1.8 million cable modems and over 1,700 headend controllers worldwide. Com21 systems offer commercial service in cable systems passing 19 million households worldwide.

Com21 is an ISO 9001 registered company with over 175 employees worldwide. The Company's corporate headquarters is located in Milpitas, California, USA, with its European sales and support center in Delft, The Netherlands. In addition, Com21 maintains a research and development facility in Cork, Ireland, as well as sales and support offices in the United States and Canada, Europe, Asia, and Latin America.

Safe Harbor Act Clause

This press release contains forward-looking information within the meaning of Section 27A of the Securities Act of 1933 and Section21E of the Securities Exchange Act of 1934, and is subject to the safe harbors created by those sections. This press release contains forward-looking statements related to revenue results for the fourth quarter of 2001. Actual results may differ materially due to a number of factors, including the completion of the accounting close, reconciliation of the Company's accounts, and management's estimates for sales returns and allowances for pricing adjustments. The matters discussed in this press release may also involve risks and uncertainties concerning Com21's products and services described in Com21's filings with the Securities and Exchange Commission (SEC). In particular, see the risk factors described in the Company's most recent Form 10K, as amended, and Form 10Q. Com21 assumes no obligation to update the forward-looking information contained in this press release.

NOTE: Com21(R) is a registered trademark of Com21, Inc., Milpitas, California, U.S.A. All other trademarks are the property of their respective owners.

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Contact: Cindy Villanueva, Public Relations of Com21, Inc., +1-408-544-1349, or cindyv@com21.com, or Brenda Clery, Marketing Communications of Com21 International, +353-1-838-4029, or bclery@com21.com; or Scot Howard of FutureWorks, Inc., +1-408-428-0895, ext. 103, or scot@future-works.com, for Com21, Inc.

Website: http://www.com21.com/