Harmonic Announces First Quarter 2008 Reporting Date

Business Wire, April 7, 2008

SUNNYVALE, Calif. -- Harmonic Inc. (Nasdaq: HLIT) today announced that it plans to report its first quarter 2008 results after market close on April 23, 2008.

Harmonic will host a conference call to discuss its financial results at 2:00 P.M. Pacific (5:00 P.M. Eastern) on April 23, 2008. A listen-only broadcast of the conference call can be accessed on the Company's website at www.harmonicinc.com or by calling 1.706.634.9047 (conference identification code 42477573). The replay will be available after 6:00 P.M. Pacific at the same website address or by calling 1.706.645.9291 (conference identification code 42477573).

Harmonic intends to discuss financial and other statistical information on this conference call. This information will also be available on the Company's website at www.harmonicinc.com either in the press release related to the above broadcast, by accessing the listen-only broadcast described above or by accessing the replay of the broadcast described above.

About Harmonic Inc.

Harmonic Inc. is a leading provider of versatile and high performance video solutions that enable service providers to efficiently deliver the next generation of broadcast and on-demand services including high definition, video-on-demand, network personal video recording and time-shifted TV. Cable, satellite, broadcast and telecom service providers can utilize Harmonic's digital video, broadband optical access and software solutions to offer consumers a compelling and personalized viewing experience.

Harmonic (NASDAQ: HLIT) is headquartered in Sunnyvale, California with R&D, sales and system integration centers worldwide. The Company's customers, including many of the world's largest communications providers, deliver services in virtually every country. Visit www.harmonicinc.com for more information.