Harmonic To Demonstrate Multi-Screen, Network PVR and Transcoding Solutions at TELCOTV 2009

SUNNYVALE, CALIF. — NOVEMBER 9, 2009 — At TelcoTV 2009 booth #539, Harmonic Inc. (NASDAQ: HLIT) will feature its comprehensive range of video delivery solutions for telco service providers, including Harmonic's MediaPrism™ Convergence Suite, the industry's most comprehensive suite of tools for real-time and offline content ingest, transformation, distribution and delivery to the TV, PC and mobile devices. Other key demonstrations will include a network personal video recording (PVR) demonstration in conjunction with Minerva Networks, Harmonic's Electra® 8000 multi-format, multi-channel HD/SD MPEG-4 AVC/MPEG-2 compression platform, the versatile ProStream™ 1000 with ACE™ technology for any-to-any transcoding and the Direct-2-Edge™ (D2E) cable IPTV solution, ideal for hybrid cable/telco operators.

Additionally, Harmonic has been named a finalist for the TelcoTV Vision Awards in the "Innovation in Encoding" category. Winners will be announced at TelcoTV 2009 on November 11. Taking place in Orlando, Florida from November 10-12, TelcoTV 2009 is a conference and exhibition for North American telecom carriers looking to investigate, implement, and manage a comprehensive entertainment convergence strategy.

"Harmonic offers a wide variety of high quality and high performance solutions that make it possible for telcos to cost-effectively enhance their IPTV service offerings with mobile and Internet TV, as well as superior quality HDTV," said Thierry Fautier, Senior Director of Convergence Solutions at Harmonic. "At this year's TelcoTV 2009 exhibition, we will showcase these solutions, including the MediaPrism Convergence Suite, which recently earned a perfect 5-diamond rating from Broadband Gear Report for superior technical innovation, and our best-in-class HD, stream processing and cable IPTV solutions."

Demonstrations at Harmonic's booth #539 include:

• The MediaPrism Convergence Suite for multi-screen video delivery to any device, featuring the ProStream 4000 real-time transcoder, which can also be easily used for picture-in-picture generation with Microsoft Mediaroom

• A live demonstration of Microsoft Smooth Streaming to PCs and IP set-top boxes using Harmonic's StreamLiner® 3000, a solution that enables adaptive bit-rate technology to the IP set-top box and reduces network costs

• Latest generation compression solutions, including the new Electra 8000 encoder and the ProStream 1000 with ACE technology for any-to-any transcoding applications

• A network PVR demonstration showcasing integration between Harmonic's time-shifted TV solution and Minerva's iTVManager

• Harmonic's Direct-2-Edge cable IPTV solution for bringing high quality IPTV services to a cable or hybrid network architecture, honored by Internet Telephony magazine with a 2009 IPTV Excellence Award

In addition to the demonstrations at TelcoTV 2009, Thierry Fautier, Senior Director of Convergence Solutions at Harmonic, will participate as a panelist at the "New Media: Managing a Brave New World" session called "Mobile TV Maturation: Some Much Needed Clarity" on November 11 at 1:00pm EST.

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About Harmonic Inc.

Harmonic Inc. is redefining video delivery with the industry's most powerful solutions for delivering live and on-demand video to TVs, PCs and mobile devices. Harmonic's 20 years of technical innovation and market leadership enable the company to offer a unique and comprehensive solution portfolio—including encoding, transcoding, content preparation, stream processing, asset management, edge processing, and delivery. Broadcast, cable, Internet, mobile, satellite and telecom service providers around the world choose Harmonic's IP-based digital video, software, and broadband edge and access solutions. Using these award-winning and industry-leading solutions, operators can reduce costs and differentiate their services by offering consumers a higher quality, personalized multi-screen 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.

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: featuring Harmonic's comprehensive range of video delivery solutions for telco service providers, and showcasing high quality and high performance solutions.

Our expectations and beliefs regarding these matters and the anticipated features and benefits of the products, solutions and technology to be shown at TelcoTV 2009 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.