Harmonic Headend Powers IPTV Service for Kosovo Telco PTK

SAN JOSE, Calif. -- March 22, 2011 -- Harmonic Inc. (NASDAQ: HLIT) today announced that Post and Telecommunications of Kosovo (PTK) has deployed Harmonic's IP-based digital video headend solutions for its new IPTV service. PTK selected an integrated Harmonic solution -- ProView(TM) integrated receiver/decoders (IRDs), Electra(R) 8000 dual-channel SD/HD encoders, Ion(TM) AVC encoders, and NMX Digital Service Manager(TM) -- based on performance, video quality, and scalability.

Harmonic's ProView 7000 IRDs are used to receive and decode digital content sources, and Harmonic's Electra 8000 encoders enable PTK to efficiently deliver up to four full-resolution, HD services within a single 1-RU chassis. The Electra 8000 also provides advanced features such as simultaneous secondary output, up/down-conversion, and automatic audio level adjustment. The Ion AVC solution provides up to four encoders in a single chassis, providing PTK with an effective solution for expanding digital video services while minimizing capital and operating expenses. The NMX Digital Service Manager offers PTK an easy-to-use yet powerful solution for network configuration and management.

Harmonic and Slovenian interactive TV technology provider BeeSmart worked together to provide the complete end-to-end IPTV platform for PTK's multichannel television service, with BeeSmart providing the interactive TV middleware platform, as well as consulting and system design services.

"The fastest way to implement a successful end-to-end interactive IPTV service is to work with an experienced partner," said Geoff Stedman, vice president for corporate marketing at Harmonic. "Together Harmonic and BeeSmart have helped PTK quickly and efficiently launch an IPTV service that includes unique features such as targeted advertising, while providing the scalability and comprehensive software development support to facilitate the launch of additional services in the future."

Harmonic's IP-based digital video solutions will be on display at Harmonic's stand 85 during the IP&TV World Forum taking place March 22-24 in London, as well as on display as part of the company's comprehensive range of video distribution and delivery solutions at booth SU4909 during the 2011 NAB Show in Las Vegas, April 11-14. The company's line of production and playout solutions will be on display in booth SL2005 during NAB.

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About BeeSmart BeeSmart is an acknowledged interactive TV solution provider for service operators and the hospitality market. It sets new standards for interactive TV by converging TV, phone, and internet services on a single, telco-grade, service delivery platform. BeeSmart combines an exceptionally fast user interface, intelligent content recommendation system, VoIP on TV, web TV support, and the ability to host multiple operators on a single service delivery platform.

Enabling a higher return on service operator's investments, it also delivers the best TV experience to subscribers. The company's preferred way of working in the global market is developing strong business relationships with local partners through a comprehensive partner program, where the synergies for development of new services are harnessed.

About Harmonic Inc. Harmonic Inc. offers a comprehensive, innovative, and market-leading portfolio of video infrastructure solutions spanning content production to multiscreen video delivery. Harmonic customers can efficiently create, prepare, and deliver differentiated video services over broadcast, cable, Internet, mobile, satellite, and telecom networks while simplifying end-to-end asset management, reducing costs, and streamlining workflows.

Harmonic (NASDAQ: HLIT) is headquartered in San Jose, Calif., with R&D, sales, and system integration centers worldwide. The company's customers -- including each of the top 20 Fortune 2000 media companies -- choose Harmonic to enable their high-quality video services delivered to consumers in virtually every country. More information is available at www.harmonicinc.com.

This press release may contain 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: providing the scalability and comprehensive software development support to facilitate the launch of additional services in the future.

Our expectations and beliefs regarding the capabilities of Harmonic's IP-based digital video headend solution and the anticipated benefits for Post and Telecommunications of Kosovo (PTK) 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.

CONTACTS: Paulien Ruijssenaars Director of Public Relations for Harmonic +1.408.490.7021 paulien.ruijssenaars@harmonicinc.com

Michael Newman, StreetConnect Investor Relations for Harmonic +1.408.542.2760 hlit@stct.com

Sarah Kavanagh Public Relations for Harmonic Office: +1 650.726.3482 Mobile: +1 650.740.8583 sarah.kavanagh@harmonicinc.com

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