Barrack Rodos Files Suit Against Harmonic Inc. and its Officers and Directors Alleging Misrepresentations.

Business Editors/Legal Writers

PHILADELPHIA--Aug. 16, 2000--Counsel for Class Plaintiff, Barrack, Rodos & Bacine, today issued the following:

A class action has been commenced in the United States District Court for the Northern District of California on behalf of all persons who purchased the common stock of Harmonic Inc. (NASDAQ: HLIT) ("Harmonic" or the "Company") between March 27, 2000 and June 26, 2000, inclusive (the "Class Period").

To sign up online:http://www.barrack.com/NewCases/NewCases.htm

The plaintiff seeks to recover damages on behalf of all purchasers of Harmonic common stock during the Class Period. He is represented by the law firm of Barrack, Rodos & Bacine, which has extensive experience in prosecuting investor class actions involving financial fraud. Barrack, Rodos & Bacine has prosecuted securities, antitrust and consumer class actions for over 20 years. The firm has offices in Philadelphia, San Diego, New York, Boston and New Jersey and has been designated lead counsel by federal and state courts across the country in large, complex cases. For more information about Barrack, Rodos & Bacine, please visit their website at www.barrack.com.

If you are a member of the Class described above, you may, no later than August 27, 2000, move the Court to serve as lead plaintiff of the Class, if you so choose. In order to serve as lead plaintiff, however, you must meet certain legal requirements.

On behalf of investors, Barrack, Rodos & Bacine has also filed class action complaints involving the securities of the companies listed below:

COMPANY               EXCHANGE SYMBOL   CLASS PERIOD      DUE DATE
-------               -------- ------   ------------      --------
Visual Networks, Inc. NASDAQ   VNWK     2/7/00-7/5/00     9/5/00
FirstWorld            NASDAQ   FWIS     3/8/00-7/5/00     9/5/00
Unify Corporation     NASDAQ   UNFY     5/19/99-7/28/00   9/29/00

If you wish to discuss any of these actions or have any questions concerning these cases or your rights or interests, please contact Maxine S. Goldman, Shareholder Relations Manager, at Barrack, Rodos & Bacine, 3300 Two Commerce Square, 2001 Market Street, Philadelphia, PA 19103, at 800-417-7305 or 215-963-0600, fax number 888-417-7306 or 215-963-0838 or by e-mail at [e-mail].