BigBand Networks Updates BEQ6000 for China's Cable Market

Market Wire, May, 2008

BigBand Networks, Inc. (NASDAQ: BBND), a leading innovator in video networking, today announced an updated version of its "universal" edge QAM platform -- the Broadband Edge QAM (BEQ(TM)) 6000 -- for the Chinese cable market. The BEQ6000 is designed to accommodate a wide range of services, including broadcast digital TV, video-on-demand (VOD), switched digital video, network PVR, high-speed data and voice-over-IP. BigBand shipped approximately 140,000 edge QAMs in 2007 and is the deployment leader in switched digital video (SDV), a technology that allows cable operators to expand digital television programming at a relatively low cost.

"The BEQ6000's superior RF performance and reliability are designed to allow operators to ensure the highest quality for today's services and tomorrow's advanced services, and significantly reduce operational costs," said John Holobinko, BigBand's vice president of product management. "Now we're bringing this industry-leading platform to China's cable industry to support digital television services and video-on-demand."

The BEQ6000 establishes a number of industry benchmarks designed to enable it to achieve what BigBand estimates to be the lowest total cost of ownership of any available edge QAM platform. BEQ6000 benchmarks include:

--  Lower operational cost. The BEQ6000 is intended to provide significant
    improvements in operational cost over other leading edge QAM platforms. The
    BEQ6000's protocol support, power efficiency, RF performance and
    reliability are designed to lower the operational costs associated with
    delivering video, data and voice services.

--  Superior RF performance. The BEQ6000 achieves QAM modulation with up
    to twice the signal quality and up to twice the signal level compared to
    other leading QAM devices on the market today. This enables operators to
    achieve a high quality-of-service for a broad range of applications, even
    as they migrate to new, advanced technologies such as M-CMTS and SDV.

--  Superior reliability. The BEQ6000 has been designed with a balance of
    density, functional design, component durability, signal quality and
    modularity designed to make it the industry's most reliable edge QAM
    platform. BigBand has customized high-quality components -- such as power
    supply and fans -- to improve product uptime and enable longer product
    life. BigBand believes the BEQ6000 also features the industry's only
    service-level fault detection and protection switching to maximize the
    benefit of redundant transport and minimize the impact of routine network
    maintenance.
    

Pricing and Availability

The BEQ6000 is available now and has been deployed by service providers on multiple continents. For technical specifications and other information, visit: http://www.bigbandnet.com/index.php/beq6000.html?release=beqlaunch . For information about how to purchase a BEQ in China, please contact BigBand Networks in Hong Kong at 85.2.3151.7304, in Beijing at 86.10.6512.6860 or in Shanghai at 86.21.6391.6125; or send email to asiapac@bigbandnet.com .

About BigBand Networks

BigBand Networks, Inc. (NASDAQ: BBND) provides broadband service providers with innovative network solutions designed to make it easier to move, manage and monetize video. These solutions are based on BigBand's video-networking platforms that are built to enable efficient and reliable delivery across a wide range of services, including digital TV, high definition TV, advanced advertising, video-on-demand and interactive TV. BigBand Networks' customers include more than 200 service providers -- including six of the ten largest service providers in the U.S. -- and leading cable and telco service providers in North America, Asia, Europe and Latin America. BigBand Networks is based in Redwood City, Calif., with offices worldwide. For additional information about the company, please call 1.650.995.5000, email info@bigbandnet.com or visit www.bigbandnet.com .

BEQ6000 and all other BigBand Networks' brand and product names are service marks, trademarks or registered trademarks of BigBand Networks, Inc. in the United States and other countries. DOCSIS is a registered trademark of Cable Television Laboratories, Inc.

This release contains "forward-looking statements" as defined under the U.S. Federal Securities Laws, including the Private Securities Litigation Reform Act of 1995 and is subject to the safe harbors created by such laws. Forward-looking statements may relate to, but are not limited to the functionality, programming potential and other potential benefits to be derived by our customers from the use of the BEQ6000, forward-looking statements are based on current expectations that involve a number of uncertainties and risks that may cause actual events or results to differ materially. Factors that could cause actual events or results to differ materially include, among others, the following: rapid technological change that can adversely affect the demand for BigBand's products, design flaws in the BEQ6000, shifts in customer demand, shifts in strategic relationships, delays in BigBand's ability to deliver or decisions to discontinue its products and services, or announcements by competitors. These and other risks may be detailed from time to time in BigBand's periodic reports filed with the Securities and Exchange Commission, copies of which may be obtained from www.sec.gov . BigBand Networks is under no obligation to (and expressly disclaims any such obligation to) update or alter its forward-looking statements whether as a result of new information, future events or otherwise. Information contained in our website is not incorporated by reference in, or made part of this press release.