Adelphia Communications Completes Widespread HDTV Rollout Based on BigBand Networks' BMR; Deployments in More than 20 Systems of Nation's Fifth Largest Cable Operator.

Business Editors/High-Tech Writers

REDWOOD CITY, Calif.--(BUSINESS WIRE)--Jan. 20, 2004

BigBand Networks, Inc., a leading provider of broadband multimedia platform solutions for broadcast television and on-demand services, today announced that Adelphia Communications Corporation, the fifth largest U.S. cable operator, has expanded its usage of the BigBand BMR(R) (Broadband Multimedia-Service Router), with deployment of BigBand HDTV in 23 systems across the country that serve more than 1.5 million cable subscribers.

"BigBand HDTV enables us to rapidly launch and scale high definition offerings to our subscribers," said Doug Ike, vice president, advanced digital services, Adelphia. "This is a cost effective way to maximize customer satisfaction with our digital offerings."

Adelphia's HDTV rollout enhances existing deployments in several headend locations of BigBand Grooming for standard digital video broadcasting. As previously announced, the operator also is using BigBand VOD Edge in its Los Angeles-area launch of Adelphia OnDemand. The Adelphia customers who are now connected to the BigBand HDTV deployments are among the eight million total digital cable subscribers, which BigBand Networks recently announced are connected to HDTV programming via the company's platforms.

"We are working closely with Adelphia through their expansion of offerings including more digital programming, VOD and HDTV," said Brian Bentley, senior vice president, worldwide sales, BigBand Networks. "Our platform solution approach and active professional services activity assure effective and economical expansion of compelling offerings to Adelphia's subscribers over time."

The BMR incorporates HDTV as an integrated, modular service within a networked, multi-service environment. Benefits include:

-- Intelligent line-up planning and control over HDTV feeds and

SDTV feeds across multiple channels, or multiplexed within the

same channels;

-- RateShaping(R) bit rate adaptation to maximize high definition

video quality while expanding channel capacity;

-- Automated cable plant adaptation to real-time changes by

broadcasters in HDTV spectrum usage; and

-- Combining HDTV content with associated Program and System

Information Protocol (PSIP) data over the same digital cable

resources.

About BigBand Networks

BigBand Networks, Inc. designs, manufactures, sells and supports platforms for broadband multimedia services. These platforms are built on the company's NativeMedia(TM) technology uniquely capable of communicating and processing video, audio and data in their native formats. The field-upgradeable architecture combines advanced hardware and software technologies for high performance with agility to optimize for each service supported. This enables network operators to cost-effectively expand revenue-generating offerings of broadcast-quality content and advanced, interactive services. Services supported by BigBand Networks' platforms include digital broadcast television, HDTV, transport of high quality video, ad insertion, VOD and iTV. The company's customers include Comcast, Time Warner Cable, Cox Communications, Adelphia Communications, Mediacom Communications and Rogers Cable. BigBand Networks is based in Redwood City, CA. For more information on BigBand Networks, please visit www.bigbandnet.com.

About Adelphia Communications Corporation

Adelphia Communications Corporation is the fifth-largest cable television company in the country. It serves 3,500 communities in 31 states and Puerto Rico, and offers analog and digital cable services, high-speed Internet access (Adelphia Power Link), and other advanced services. For more information on Adelphia Communications Corporation, please visit www.adelphia.com.