Press Release

COLOGNE, Germany--(BUSINESS WIRE)--May 30, 2006---Harmonic Inc. (Nasdaq:HLIT) today announced two new rack-mountable platforms for the award-winning FLXLink(TM) transport solutions. The FLXLink HLP 9200 and HLP 9300 systems enable operators to more flexibly scale bandwidth needed for backhauling mobile voice, data and, more frequently, video content between the fiber-based access network and the towers at the wireless edge, while providing more efficient use of the often limited physical space at the tower site. Also ideal for enterprise applications such as PBX interconnect, VPN, Internet access and other managed services, the new platforms are fully compatible with Harmonic's existing FLXLink scalable T1/E1, 100-Mbps and 1-Gbps solutions.

Around the world, consumers have come to depend on their mobile devices for voice and data services, and are embracing emerging bandwidth-intensive narrowcast multimedia applications, such as mobile video conferencing and on-demand streaming video to the handheld. To accommodate the expanding range of services and growing volume of traffic, operators must find a way to efficiently and securely scale the bandwidth to and from the wireless network. This need will be further compounded as various technological advances enable business, entertainment and education to become increasingly untethered. In anticipation of the fully unwired world, operators are turning to Harmonic's FLXLink solution -- which is fully interoperable with networking equipment at the operator and customer premises -- to cost-effectively transport services using up to 10 distinct wavelengths on the same fiber that carries residential broadband services.

The new one rack unit (RU) FLXLink HLP 9200 and 2-RU HLP 9300 platforms host multiple service cards, or network interface units (NIU), improving system density and manageability. In addition, the modular design allows operators to scale the capacity as needed by simply adding NIUs to the platform, or upgrading a NIU with one that offers greater capacity.

"The future of communications and entertainment is tightly connected to the evolution of mobile technologies that will allow anytime, anywhere and on any device access to existing and yet to be imagined services," said Sunil Frida, Commercial Services Solution Manager for Harmonic Inc. "Harmonic is actively leading the way in making the mobile video, voice and data triple play a reality with advanced digital video and broadband networking solutions. FLXLink's ability to backhaul increasing volumes of wireless content as well as to cost-effectively transport a range of enterprise applications provides a new revenue source for broadband network operators. The new FLXLink HLP 9200 and HLP 9300 platforms are more easily incorporated into the service provider and customer facilities, and provide a more flexible and scalable way to provision bandwidth-intensive services to the wireless edge."

The 2-RU FLXLink HLP 9300 holds up to three T1/E1 cards, each delivering four full T1/E1 circuits and one 100-Mbps Ethernet service. To satisfy the increasing appetite for enterprise bandwidth, the platform can alternatively house a combination of six 100-Mbps and 1-Gbps high-speed Ethernet cards while the 1-RU HLP 9200 holds two NIUs. The new HLP 9300 platform also offers a DC powering option which is often a key requirement for tower site deployments. Operators can enjoy increased service uptime and availability with redundant and hot-swappable AC and DC power supplies. In addition, by enabling the use of the same type of NIU at both the service provider and customer facilities, Harmonic dramatically reduced the spares requirement, further enhancing an already compelling business case.

In use by cable operators and telcos worldwide, FLXLink facilitates the introduction and delivery of a range of value-added services using the existing fiber without affecting the capacity or quality of the currently provisioned services. The FLXLink T1/E1 solution recently won the International Engineering Consortium's prestigious InfoVision Award for best-in-class wireless broadband product, highlighting the product's strength in creating a highly secure, flexible and reliable way for operators to deliver the mobile triple play.

About Harmonic Inc.

Harmonic Inc. is a leading provider of digital video, broadband optical networking and IP delivery systems to cable, satellite, telecom and broadcast network operators. Harmonic's open standards-based solutions for the headend through the last mile enable customers to develop new revenue sources and a competitive advantage by offering powerful interactive video, voice and data services such as video-on-demand, high definition digital television, telephony and Internet access.

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 evolution of mobile technologies that will allow anytime, anywhere and on any device access.

Our expectations and beliefs regarding these matters may not materialize, the features and benefits of the FLXLink HLP 9200 and 9300 systems described above may not be realized, 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, 408-543-2392 (Media Relations)
             sarah.lum@harmonicinc.com
             or
             StreetConnect
             Michael Newman, 408-542-2760 (Investor Relations)
             hlit@stct.com

    SOURCE: Harmonic Inc.