BigBand Networks Expands Presence in China, Demonstrates New Digital Video Technologies At CCBN.

Video Networking Pioneer Opens Fourth Office in China, Demonstrates Technologies Designed to Allow Operators to Build and Monetize a Digital Infrastructure

BEIJING -- CCBN Exhibition and Conference -- BigBand Networks, Inc., (NASDAQ: BBND), today announced that it has opened its fourth office in China at that nation's largest cable industry conference. The company--which also plans to demonstrate an array of technologies at the conference this weekend designed to aid the China cable industry's continuing migration to digital TV services--officially opened a research and development facility in Shenzhen, in Guangdong province, to support its other offices in Hong Kong, Beijing and Shanghai.

"The Shenzhen facility further demonstrates our continued commitment to the Chinese market," said Johnny Cheung, BigBand's senior director of the Asia-Pacific region. "We will be demonstrating a range of technologies this week that are designed to help China's operators to upgrade to a digital infrastructure and support new, revenue-generating applications to fully leverage their investments in these upgrades."

BigBand Networks will operate four distinct technology exhibits today through Sunday in Hall 2, Booth 2504 at the China International Exhibition Center. BigBand's demonstrations include:

* Headend-in-a-Box. BigBand Networks will demonstrate the "headend-in-a-box" capabilities of its BMR([R]), which processes video from a wide range of sources--including satellite feeds, digital and analog broadcasts and VOD servers--for delivery over Ethernet, QAM, ASI and other formats. BigBand's BMR combines a wide range of digital video headend functionality in a self-contained piece of modular hardware.

* Advanced Video-on-Demand. This demonstration showcases BigBand's role in delivering advanced video-on-demand and time-shifting services, which can generate additional revenue for operators. Time-shifting refers to the ability for viewers to have some degree of control over when they begin watching programs.

* Video over DOCSIS([R]). In this demonstration, BigBand's Cuda([R]) Modular CMTS architecture delivers HDTV over a cable modem simultaneously to a laptop PC and a television.

* Addressable Advertising. This demonstration illustrates the ability of BigBand's BMR for measurable delivery of tailored advertising to individual recipients.

BigBand Networks' Shenzhen office officially opened in a ceremony on Thursday, March 29. The new office supports development of video, voice and data technology as an extension of BigBand's other development sites. The company expects that development to include functionality designed to meet the specific needs of Chinese service providers.

About BigBand Networks

BigBand Networks, Inc., (NASDAQ: BBND), is a leading provider of broadband multimedia infrastructure for video, voice and data. The company's solutions are designed to process, optimize, and deliver services such as broadband Internet, VoIP, digital broadcast television, HDTV, transport of high quality video, local advertising, VOD, interactive TV and IPTV across coaxial cable, fiber or copper. Service providers use BigBand Networks' platforms to cost-effectively expand revenue-generating offerings of rich content and advanced interactive services. Customers include six of the ten largest service providers in the U.S., and leading service providers in North America, Asia, Europe and Latin America. Founded in 1998, BigBand Networks is based in Redwood City, Calif., with offices worldwide. For more information, please call 650-995-5000, email [e-mail] or visit www.bigbandnet.com.

BMR, Cuda 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 trademark of Cable Television Laboratories, Inc. All other marks are the property of their respective owners.

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 features available in, and the potential benefits to be derived from, BigBand Networks' products, and market acceptance of such products. Such 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, shifts in customer demand, shifts in strategic relationships, delays in BigBand's ability to deliver 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.