ATC Teleports, Inc. Completes Acquisition of ICG Satellite Services, Inc. and Appoints David Kagan as President and Chief Operating Officer.

FAIRFAX, Va.--(BUSINESS WIRE)--Dec. 2, 1999--

ATC Teleports, Inc., a wholly owned subsidiary of American Tower Corporation (NYSE:AMT), consummated the previously announced acquisition of ICG Satellite Services, Inc. (ICGSS) and its subsidiary, Maritime Telecommunications Network, Inc. (MTN).

The acquisition of ICGSS includes a teleport facility in Holmdel, New Jersey and a maritime telecommunications network based in Miami, Florida. The New Jersey teleport and operations center has major fiber connectivity to the Internet through leading service providers as well as 12 existing antennas and one under construction that will offer customers more choices in satellite coverage to the Atlantic Ocean Region. MTN provides Internet, voice, and data services to major cruise lines. This acquisition positions ATC Teleports as a leading provider in Internet transmissions via satellite from North America and service to mobile satellite receivers at sea.

David Kagan, President and Chief Operating Officer of ICGSS, has been appointed President and Chief Operating Officer of ATC Teleports. Mr. Kagan will report to David Garrison, Chairman of the Board of ATC Teleports. Alan Box will remain as Vice Chairman of the Board. Carl Cangelosi, former COO of ATC Teleports, has resigned to form his own communications consulting company.

Mr. Garrison stated, "I am pleased to be welcoming David Kagan to our team. Mr. Kagan and ICGSS have tremendous knowledge of Internet, voice and data traffic as well as a new branch of the industry, the maritime business, which will add to the capabilities of our existing professionals. The New Jersey teleport is a perfect fit for our existing business and I know Mr. Kagan will be highly effective in integrating ATC Teleports and ICGSS."

Mr. Kagan has served as President and Chief Operating Officer of ICGSS since June 1998 and joined ICGSS as Chief Financial Officer and Vice President in 1997. Prior to joining ICGSS, Mr. Kagan was Vice President of Finance and Treasurer at Norwegian Cruise Line Limited (NCL) for 10 years.

Mr. Garrison joined the Board of ATC Teleports in July, 1999. He is also a member of the Board of Directors of Ameritrade, a Nasdaq listed leader in online securities trading, as well as Director of GST Communications, a competitive local exchange carrier involved in the construction of Internet 2. Mr. Garrison also serves on the Boards of two Internet start up companies, enonymous.com and Datarover.

ATC Teleports, Inc. is a leading provider of domestic and international satellite services. Giving effect to pending transactions, the company owns and operates more than 110 antennas accessing most major satellite systems from U.S. teleport locations in California (under construction), New Jersey, Texas, and Virginia. ATC Teleports supplies terrestrial connections to major points of presence (POPs), co-location facilities and switching centers. It has 24x7 Technical Operations Centers located at 60 Hudson Street in New York, One Main Place in Dallas and in Alexandria, Virginia. The teleports provide complete engineering, management and technical assistance for full-time and occasional-use video, Internet, data and voice applications.

American Tower is the leading independent owner operator and developer of broadcast and wireless communications sites in North America. Giving effect to pending transactions, American Tower operates approximately 9,800 sites in the United States and Mexico, including approximately 300 broadcast tower sites. Of the 9,800 sites, approximately 8,700 are owned or leased towers and approximately 1,100 are managed and lease/sublease sites. Based in Boston, American Tower has regional hub offices in Boston, Atlanta, Chicago, Houston, and San Francisco. For more information about American Tower Corporation and ATC Teleports, please visit our web sites www.americantower.com and www.atcteleports.com.

This press release contains "forward-looking statements" concerning future expectations, plans or strategies that involve a number of risks and uncertainties. The Company wishes to caution readers that certain factors may have affected the Company's actual results and could cause results for subsequent periods to differ materially from those expressed in any forward-looking statement made by or on behalf of the Company. Such factors include, but are not limited to (i) substantial capital requirements and leverage principally as a consequence of its ongoing acquisitions and construction activities, (ii) dependence on demand for wireless communications, use of satellites for Internet data transmission, and implementation of digital television, (iii) the success of the Company's tower construction program and (iv) the successful operational integration of the Company's business acquisitions. The Company undertakes no obligation to update forward-looking statements to reflect subsequently occurring events or circumstances.