Press Release

SUNNYVALE, Calif., May 11, 2007 (BUSINESS WIRE) -- Harmonic Inc. (Nasdaq:HLIT) today announced that Patrick Harshman, President and CEO, and Robin Dickson, Chief Financial Officer, will make a presentation at the Deutsche Bank 2007 Technology Conference on Tuesday, May 15, 2007, at 2:30 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 May 15 through May 22 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.

SOURCE: Harmonic Inc.

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