Press Release

CORRECTING and REPLACING Harmonic Announces Audio Webcast Presentation at Janco Partners Annual Media and Telecommunications Conference

March 14, 2005

SUNNYVALE, Calif.--(BUSINESS WIRE)--March 14, 2005--In BW6249 issued March 14, 2005: First graph, first sentence, should read: Harmonic Inc. (Nasdaq:HLIT) today announced its presentation at the Janco Partners Annual Media and Telecommunications Conference on March 16, 2005, at 12:00 P.M. (Pacific Time) -- instead of March 14, 2005.

The corrected release reads:

HARMONIC ANNOUNCES AUDIO WEBCAST PRESENTATION AT JANCO PARTNERS ANNUAL MEDIA AND TELECOMMUNICATIONS CONFERENCE

Harmonic Inc. (Nasdaq:HLIT) today announced its presentation at the Janco Partners Annual Media and Telecommunications Conference on March 16, 2005, at 12:00 P.M. (Pacific Time). The live audio webcast of Harmonic's presentation will be available from Harmonic's website, www.harmonicinc.com, under the Investor Relations Events section. The replay will be available after 5:00 P.M. (Pacific Time) on March 16 through March 23 at the same Web address.

About Harmonic Inc.

Harmonic is a leading provider of innovative broadband solutions that deliver video, voice and data to communications providers around the world. Harmonic's technically advanced fiber optic, digital video and IP data delivery systems enable network operators to provide a range of interactive and advanced digital services that include high-speed Internet access, telephony, digital video, HDTV, video and audio streaming, and video-on-demand.

Harmonic is headquartered in Sunnyvale, California, with R&D, sales, and system integration centers worldwide. The Company has customers in over 40 countries on six continents, including many of the world's largest communications providers. For more information, visit www.harmonicinc.com.


    CONTACT: Harmonic Inc.
             Robin N. Dickson, Chief Financial Officer, 408-542-2500
             or
             StreetConnect
             Michael Newman, Investor Relations, 408-542-2760

    SOURCE: Harmonic Inc.