Press Release

SUNNYVALE, Calif.--(BUSINESS WIRE)--June 18, 2007--Harmonic Inc. (NASDAQ:HLIT) will highlight its latest IP-based digital video solutions at booth #6D3-01 during the upcoming CommunicAsia exhibition, an annual event held in Singapore and attended by the leading broadcast, cable, satellite and telco operators in the Asia Pacific region. Harmonic's market-leading MPEG-4 AVC (H.264) and MPEG-2 compression and video stream processing solutions for high definition (HD) and standard definition (SD) video will be displayed, as will an end-to-end video-on-demand (VOD) delivery platform for both real-time and non real-time content provisioning.

Leading operators in Asia continue to deploy innovative video services, including expanding their HD and VOD offerings, as well as implementing H.264-based compression to enhance bandwidth efficiency. To power these services, Harmonic's latest generation DiviCom(R) Electra(TM) SD and HD H.264 encoders and its StreamLiner(R) on-demand video delivery platform have been selected and deployed by several of the region's top tier operators, including the world's largest IPTV service provider.

"As momentum continues to grow in the region, we consider the CommunicAsia event to be an important venue to showcase our latest generation products and solutions," said Raymond Tse, Vice President of Asia Pacific Sales for Harmonic Inc. "Harmonic provides operators with a comprehensive range of compression, stream processing, edge and access solutions that are redefining video delivery. This portfolio is backed by Harmonic's technology innovation, market leadership and experience, enabling operators to deliver superior quality and high efficiency video systems that meet subscriber demands and increase revenues."

    Featured demonstrations at CommunicAsia 2007 include:

    --  Electra H.264 HD and SD compression systems

    --  Ion(TM) MPEG-2 encoding with integrated DiviTrackMX(TM)
        statistical multiplexing

    --  The market-leading on-demand video delivery platform,
        featuring the Armada(R) intelligent asset manager and
        StreamLiner video servers

    --  The ProStream(TM) 8000 digital video mosaic solution

In addition, Dr. Tong Yu will share Harmonic's extensive IPTV industry expertise as a presenter at two sessions of the BroadcastAsia Conference, held in conjunction with the exhibition. On June 19 at 11:30 A.M. local time, he will discuss "IPTV: Where We Are Today and Where Do We Go Next?" and he will also address the topic of "Digital Mosaic Solutions for IPTV Operators: From Multicast to Personalized" on June 20 at 3:05 P.M.

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.

This press release contains forward-looking statements within the meaning of Section 27(A) of the Securities Act of 1933 and Section 21(E) of the Securities Exchange Act of 1934, including statements related to the features and capabilities of the Harmonic solutions and systems to be demonstrated at CommunicAsia 2007.

Our expectations and beliefs regarding these solutions and systems and their anticipated benefits for customers may not materialize, and actual results could differ materially from those projected. The forward-looking statements contained in this press release are also subject to other risks and uncertainties, including those more fully described in Harmonic's filings with the Securities and Exchange Commission including its recent Reports filed on Form 10-K and Form 10-Q. Harmonic does not undertake to update any forward-looking statements.

EDITOR'S NOTE - Product and company names used herein are trademarks or registered trademarks of their respective owners.

    CONTACT: Harmonic
             Sarah Lum, +1-408-543-2392 (Media Relations)
             sarah.lum@harmonicinc.com
             or
             StreetConnect
             Michael Newman, +1-408-542-2760 (Investor Relations)
             hlit@stct.com

    SOURCE: Harmonic Inc.