BigBand Networks to Demonstrate Industry-Leading Switched Digital Video Solution at KCTA 2007

Switched video pioneer to demonstrate proven, cost-effective solutions for Korean digital TV and HDTV expansion

June 12, 2007

Jeju, South Korea, KCTA Conference, June 12, 2007—BigBand Networks, Inc., (NASDAQ: BBND) the pioneer and deployment leader of switched digital video, today announced that it will demonstrate its industry-leading switched video solution and other video innovations June 13-15 in Booth A-3 at KCTA 2007, Korea’s premier interactive digital cable television conference and exhibition. BigBand also announced the opening of a new office in Bundang, near Seoul, to support the Korean market.

Switched digital video has captured the attention of the Korean cable industry as a cost-effective method to expand digital and HDTV programming in the wake of the South Korean government’s announcement in May that the country plans to end analog television broadcasting, and only allow digital services, by 2012. BigBand’s switched digital video solution creates capacity for new digital programming, including HDTV, by delivering existing programming only where it is requested by viewers, instead of delivering all programming to all subscribers at all times. BigBand’s solution has been selected by three of the five largest cable operators in the U.S., and its commercial deployments pass more than six million homes.

BigBand will demonstrate multiple technologies in addition to switched digital video at KCTA 2007, including:

• Headend-in-a-Box. This demonstration will show how the BigBand Broadband Multimedia-Service Router (BMR®) functions as a complete “headend-in-a-box” solution to provide rateshaping, scrambling, RF modulation and other functionality that would otherwise require multiple products from other vendors. The BigBand BMR is also a key component of switched digital video deployments.

• IPTV over DOCSIS®. This demonstration illustrates how cable operators can deliver IP-based video to either TVs or PCs leveraging their quadrature amplitude modulation (QAM) and CMTS equipment. The demonstration leverages BigBand’s modular CMTS (M-CMTS) architecture and two key DOCSIS 3.0 features—downstream channel bonding and DOCSIS 3.0 Multicast forwarding—to deliver the IP video.

For additional information about BigBand Networks’ technologies, or to arrange a demonstration, please email info@bigbandnet.com.

About BigBand Networks

BigBand Networks, Inc. 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 through any network. Service providers use BigBand Networks' platforms in efforts to cost-effectively expand revenue-generating offerings of rich content and advanced interactive services. Customers include cable operators, U.S. telecommunications companies, as well as leading service providers in 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 info@bigbandnet.com or visit www.bigbandnet.com.

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 of BigBand Networks’ products and the potential benefits to be derived from BigBand Networks’ 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.