Press Release

Harmonic Announces Audio Webcast Presentation at the Lehman Brothers Worldwide Wireless and Wireline Conference

May 24, 2007

SUNNYVALE, Calif.--(BUSINESS WIRE)--May 24, 2007--Harmonic Inc. (Nasdaq: HLIT) today announced that Patrick Harshman, President and CEO, and Robin Dickson, Chief Financial Officer, will make a presentation at the Lehman Brothers Worldwide Wireless and Wireline Conference on Thursday, May 31, 2007, at 11:45 A.M. (Eastern 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. (Eastern Time) on May 31 through June 7 at the same Web address.

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 increase revenues and lower operational expenditures by using Harmonic's digital video, broadband optical access and software solutions to offer consumers the compelling and personalized viewing experience that is driving the business models of the future.

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.


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

    SOURCE: Harmonic Inc.