Harmonic Ships Two Million QAMs, Doubling QAM Shipments in Just Over One Year

SAN JOSE, Calif. -- Nov. 15, 2011 -- Harmonic Inc (NASDAQ: HLIT) today announced that it has strengthened its leadership position in the edgeQAM market with the shipment of more than two million QAMs to cable service providers worldwide, doubling the number of QAMs shipped since the company passed the one million mark in August 2010. Harmonic's edgeQAM technology powers premium services for more than an estimated 70 million cable subscribers worldwide, including video-on-demand (VOD), broadcast, switched digital video (SDV), modular cable modem termination system (M-CMTS) and cable IPTV services. Harmonic's NSG edgeQAMs have been deployed by 18 of the 20 largest MSOs in the United States, as well as Tier-1 MSOs in Europe and Asia.

"It took ten years to ship our first million QAMs, and just over one year to reach the second million," said Gil Katz, vice president of cable solutions at Harmonic. "As demand for more bandwidth increases, cable operators are seeking out Harmonic's proven, high-performance technology and extensive deployment experience to power their critical services. Our solutions provide operators with unparalleled density in easy-to-operate edge devices, lowering operating expenses while enabling a range of vital services."

"The edgeQAM market is growing as cable operators scramble to deliver more advanced video services to subscribers," said Alan Breznick, a senior analyst at Heavy Reading. "So it's not that surprising that cable bandwidth doubles every two years. But it is impressive that Harmonic doubled its QAM shipments in a much shorter period of time."

Harmonic's latest-generation edgeQAM, NSG(TM) 9000 HectoQAM(TM), is the first universal edgeQAM solution to deliver up to 648 QAMs per two-rack unit chassis. In addition to its high density, the HectoQAM incorporates technologies that significantly improve efficiency and ease of operation, including Harmonic's EQAM Virtualization(TM) software technology and frequency agility for flexible placement of QAMs across the spectrum.

The Harmonic NSG platform was originally introduced in 2000 as the world's first edgeQAM. Its successive generations are in use by hundreds of operators worldwide and have garnered multiple industry accolades, including Light Reading's Leading Lights Best New Cable Product Award, Internet Telephony IPTV Excellence Award, an IPTV World Series Award, an SCTE U.K. Technical Innovation of the Year Award, and a prestigious four-diamond rating from Broadband Technology Report.

Harmonic will demonstrate its innovative edge and access solutions, as well as its latest multiscreen video solutions, at the SCTE Cable-Tec Expo 2011, booth 968, Nov. 15-17 in Atlanta.

# # #

About Harmonic Inc.

Harmonic Inc. (NASDAQ: HLIT) provides infrastructure that powers the video economy. The company enables content and service providers to efficiently create, prepare, and deliver differentiated video services for television and new media platforms. More information is available at www.harmonicinc.com.

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including statements related to the capabilities and anticipated benefits of our NSG(TM) edgeQAM, NSG 9000 HectoQAM(TM), and other edge processing solutions. Our expectations and beliefs regarding NSG edgeQAM, NSG 9000 HectoQAM, and other edge processing solutions may not materialize and are subject to risks and uncertainties, including, without limitation, the possibility that these NSG products do not maintain their market leadership position or that one of more of the expected benefits, such as reductions in operating expenses, high density, high performance, efficiency and ease of operation, are not achieved.

The forward-looking statements contained in this press release are also subject to other risks and uncertainties, such as those more fully described in Harmonic's filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended December 31, 2010, its Quarterly Reports on Form 10-Q and its Current Reports on Form 8-K. The forward-looking statements in this press release are based on information available to Harmonic as of the date hereof, and Harmonic disclaims any obligation to update any forward-looking statements.

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