BigBand Networks to Report Second Quarter 2007 Financial Results

July 18, 2007

REDWOOD CITY, Calif., July 18, 2007—BigBand Networks, Inc., (NASDAQ: BBND), a leading provider of broadband multimedia infrastructure for video, voice, and data, today announced that it will issue a press release reporting financial results for the second quarter ended June 30, 2007, immediately following the close of the market on Thursday, August 2, 2007.

The Company will host a corresponding conference call and live webcast at 2:00 p.m. Pacific Daylight Time on August 2, 2007. The webcast will be available live on the Investor Relations section of the Company’s corporate website at www.bigbandnet.com, and via replay beginning approximately two hours after the completion of the call until the Company’s announcement of its financial results for the next quarter. An audio replay of the call will also be available to investors beginning at approximately 4:00 p.m. Pacific Daylight Time on August 2, 2007 until 11:59 p.m. Pacific Daylight Time on October 31, 2007, by dialing +1.800.405.2236 or +1.303.590.3000 for callers outside the U.S. and Canada and entering passcode 11093322.

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 of video, voice and data across a wide range of services, including digital TV, high definition TV, addressable advertising, video-on-demand, interactive TV, Internet TV, video telephony, high-speed Internet and voice-over-IP. BigBand Networks' customers include more than 100 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.