Adelphia Communications Deploys BigBand BMR; Nation's Fifth Largest Cable Operator First Uses BigBand Networks' Cost-Effective Digital Video Solution in Four Sites.

Business Editors

REDWOOD CITY, Calif.--(BUSINESS WIRE)--Jan. 21, 2003

BigBand Networks, Inc., a leading provider of broadband multimedia routing systems for broadcast television and advanced services, today announced that Adelphia Communications Corporation (OTC: ADELQ), the fifth largest U.S. cable operator, has deployed BigBand Networks' Broadband Multimedia-Service-Router (BMR(R)) for digital broadcast services at four headend system locations in California, Colorado and Pennsylvania.

Adelphia is using BigBand Grooming on the BMR to cost effectively gain control over programming line-ups and efficiently utilize network bandwidth and associated resources. The relationship signifies BigBand Networks' continuing success in the North American cable market, with six of the top ten operators as customers.

"We have selected BigBand Networks because the BMR platform lets us expand the digital broadcast programming we provide to our subscribers as an alternative to expensive plant upgrades," said Dan Liberatore, vice president of engineering of Adelphia. "The platform also promises to extend its cost effectiveness and plant efficiency benefits to additional services such as HDTV, digital ad insertion and VOD."

BigBand Grooming achieves a new approach to digital broadcasting within a networked, multi-service environment. By bringing together graphical user interface (GUI) software, high port density, and integrated switching from any input to any output, cable operators gain significantly better control over programming, and its consumption of network bandwidth. The BigBand BMR's high performance media processing further enhances bandwidth efficiency through selective application of BigBand Networks' RateShaping(TM) video bit rate adaptation to some or all programs on an as-needed basis. High input capacity on the BMR chassis enhances operator flexibility in creating line-ups from many satellite-based, off-air and local digitally encoded programming sources.

"Working with the BigBand BMR allows Adelphia to profitably maximize digital offerings and to more effectively compete with alternative programming carriers," said Jamie Howard, chief operating officer of BigBand Networks. "BigBand Networks looks forward to ongoing work with operators like Adelphia, further expanding content and services over cable with solutions such as BigBand Switched Broadcast and BigBand VOD Edge."

BigBand Grooming leverages the BigBand BMR's platform advantages in intensive media processing, integrated switching, high port density, reliable architecture, and ease-of-use. The modular NativeMedia(TM) operating system inside the BMR cost effectively provides operators with incremental scaling of capacity, and seamless addition of new functionality such as BigBand VOD Edge, BigBand Switched Broadcast, BigBand HDTV, BigBand Ad Splicing Gateway, and BigBand Transport Gateway.

About BigBand Networks

BigBand Networks, Inc. designs, manufactures, sells and supports Broadband Multimedia-Service Routers (BMR). The BMR is a new class of router built on the company's NativeMedia technology that uniquely routes and processes video, audio and data in their native formats. The field-upgradeable architecture combines advanced hardware and software technologies, for high performance media processing and switching, 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 the BMR 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, with headquarters in Coudersport, Pennsylvania, is the fifth-largest cable television company in the country. It serves 3,500 communities in 32 states and Puerto Rico. It offers analog and digital cable services, high-speed Internet access (Adelphia Power Link), and other advanced services. More information about Adelphia Communications can be accessed on the Internet at: www.adelphia.com.

Cautionary Statement Regarding Financial and Operating Data

As a result of actions taken by the former management of the Company: (a) the Company has not yet completed its financial statements as of or for the year ended December 31, 2001, or received its independent public accountants' report thereon or filed with the Securities and Exchange Commission (the "Commission") its Annual Report on Form 10-K for the year ended December 31, 2001; (b) the Company's former independent public accountants, Deloitte & Touche LLP, suspended their auditing work on the Company's financial statements as of and for the year ended December 31, 2001 and withdrew their audit report with respect to the year ended December 31, 2000; (c) the Company has not yet completed its financial statements as of and for the three months ended March 31, 2002, June 30, 2002 or September 30, 2002, or filed with the Commission its Quarterly Report on Form 10-Q for the quarters ended March 31, 2002, June 30, 2002 and September 30, 2002; and (d) the Company expects to restate its financial statements for the years ended December 31, 1999 and 2000, and its interim financial statements for 2001 and possibly other periods. Current management took control in May 2002 and has retained new independent auditors and begun the preparation of new financial statements for the periods in question; as a result of certain actions of prior management that the Company has previously disclosed, the Company is unable to predict at this time when such financial statements will be completed. In addition, current management believes that the public information provided by prior management on other matters of interest to investors, such as the Company's rebuild percentage (the percentage of the Company's cable television systems that the Company believes have been upgraded to current standards), was unreliable. As a result, the Company anticipates that it may have to supplement the financial and other information contained in this Form 8-K and that such supplemental information may be material.

Cautionary Statement Regarding Forward-Looking Statements

This document includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act") and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). All statements regarding Adelphia Communications Corporation and its subsidiaries' (collectively, the "Company's") expected future financial position, results of operations, cash flows, restructuring and financing plans, business strategy, budgets, projected costs, capital expenditures, competitive positions, growth opportunities, plans and objectives of management for future operations and statements that include words such as "anticipate," "if," "believe," "plan," "estimate," "expect," "intend," "may," "could," "should," "will," and other similar expressions are forward-looking statements. Such forward-looking statements are inherently uncertain, and readers must recognize that actual results may differ from the Company's expectations. The Company does not undertake a duty to update such forward-looking statements.

Actual future results and trends for the Company may differ materially depending on a variety of factors discussed in the Company's filings with the Commission, including its recently filed Current Reports on Form 8-K, the most recently filed Quarterly Report on Form 10-Q, the Form 10-K for the year ended December 31, 2000, and the most recent prospectus supplement filed under Registration Statement No. 333-64224, under the section entitled "Risk Factors" contained therein. Factors that may affect the plans or results of the Company include, without limitation: (a) the Company's filing of a petition for relief under Chapter 11 of the United States Bankruptcy Code; (b) the results of litigation against the Company including the recently filed civil complaint by the Commission and the potential for a criminal indictment of the Company; (c) the lack of substantial cable industry experience among certain members of the Company's senior management; (d) the effects of government regulations and the actions of local cable franchise authorities; (e) the availability of debtor-in-possession financing and surety bonds to support the Company's operations; (f) the results of the Company's internal investigation and the matters described above under "Cautionary Statement Regarding Financial and Operating Data"; (g) actions of the Company's competitors; (h) the pricing and availability of equipment, materials, inventories and programming; (i) product acceptance and customer spending patterns; (j) the Company's ability to execute on its business plans, to provide uninterrupted service to its customers and to conduct, expand and upgrades its networks; (k) technological developments; (l) matters relating to or in connection with the recent bankruptcy filing and proceedings of Adelphia Business Solutions, Inc.; (m) changes in general economic conditions and/or economic conditions in the markets in which the Company may, from time to time, compete; (n) the movement of interest rates and the resulting impact on the Company's interest obligations with respect to its pre-petition bank debt; and (o) the delisting of Adelphia Communication Corporation's common stock by Nasdaq. Many of such factors are beyond the control of the Company and its management.