Investor News Release

MIDDLETOWN, N.Y.--(BUSINESS WIRE)--March 24, 2000--MEDIACOM COMMUNICATIONS CORPORATION (Nasdaq: MCCC) announced today that it has launched high-speed Internet access in five new markets: Franklin, NC; Chillicothe, IL; and Eveleth, Hutchinson, and Waseca, MN. With the addition of these new markets, Mediacom now offers cable modem service in 13 cable television systems passing 250,000 homes, of which 169,000 homes have been activated for two-way data communications.

Mediacom's high-speed Internet access service is being launched in partnership with ISP Channel, a subsidiary of SoftNet Systems, Inc. (Nasdaq: SOFN). ISP Channel's cable modem service allows customers to enjoy speeds many times faster than typical dial-up telephone modem service when downloading e-mails, files, graphics, audio and video. The cable modem "always on" connection allows customers to instantly check e-mail or stock prices without having to reconnect to the Internet. Additional ISP Channel services include personal web pages, news groups, and full multi-media capabilities as well as offering a unique customized community portal, ISP Channel Neighborhood.

"Our partnership with ISP Channel, which was finalized in November 1999, has enabled Mediacom to accelerate its deployment of high-speed Internet access and we expect to launch cable modem service to a third of our customer base by the end of 2000. In the communities where service has been launched we are pleased with the positive customer reaction to this leading-edge service," said John Pascarelli, vice president of marketing.

ISP Channel's president, Jonathan Marx, said, "We are proud of this partnership with Mediacom and are committed to the speedy deployment of ISP Channel broadband services to Mediacom's customers."

Mediacom Communications Corporation is the 9th largest cable television company in the United States based on customers served by wholly-owned systems after giving effect to its pending acquisitions and recently announced industry transactions. Mediacom's cable systems pass 1.1 million homes and serve 747,000 basic subscribers in 21 states, including its pending acquisitions. Mediacom was founded in July 1995 by Rocco B. Commisso, its Chairman and Chief Executive Officer, to acquire and develop cable television systems serving principally non-metropolitan markets in the United States.

More information about Mediacom Communications Corporation can be accessed on the Internet at www.mediacomcc.com .

Any statements in this press release that are not historical facts are forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from historical results or those the Company anticipates. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see "RISK FACTORS" in the Company's prospectus, dated February 3, 2000, filed with the Securities and Exchange Commission.

CONTACT: Mediacom Communications Corporation

             John Pascarelli
             Vice President of Marketing
             (914) 695-2660
             jpascarelli@mediacomllc.com