Atlantic Tele-Network, Inc. Announces International Traffic Figures For Third Quarter 2000 and Other Recent Developments.

Business Editors

ST. THOMAS, U.S. Virgin Islands--(BUSINESS WIRE)--Oct. 10, 2000

Atlantic Tele-Network, Inc. (AMEX:ANK), released today international traffic figures for its subsidiary, the Guyana Telephone and Telegraph Company Limited ("GT&T") for the third quarter of 2000 and other recent developments.

Audiotext traffic, which has significantly lower profit margins than does regular in-bound international traffic, was down 75% from the third quarter last year. This trend continues the 67% year to year decline of audiotext traffic previously reported for the second quarter. Regular in-bound international traffic, which carries the highest profit margins of all of GT&T's international traffic, increased by 1.6% over the third quarter last year. Access lines in service increased to 68,794 from 63,552 one year ago, bringing Guyana close to a 10% teledensity rate, without counting about 5,000 additional cellular lines.

The Company also announced site selection and equipment orders for the start of a web-enabled operator center in Guyana for which the Government has given the Company a five year tax holiday.

Cornelius B. Prior, Jr. Chairman of the Board and Chief Executive Officer of Atlantic Tele-Network, Inc. said "Although in-bound international traffic was down 1.9% from the preceding quarter it was up 1.6% from the third quarter of last year, despite the continued refusal of AT&T to send U.S. traffic to Guyana directly. MCI does have direct satellite and fiber optic facilities to Guyana and Sprint has recently agreed to send U.S. traffic to Guyana using the Americas II fiber optic cable. This is the first fiber optic cable to Guyana, connected in September and to begin carrying commercial traffic shortly, with greatly increased capacity. The quality and capacity of the fiber connection will enable the new operator center to compete with other operator centers across North America. We are also pleased that lines in service are up 8.2% over last year, and that out-bound international traffic is up 22.5% over last year's third quarter and 11% over the second quarter. We intend to put these numbers before the PUC of Guyana, which is presently considering our request for increased rates, since these access lines and traffic are the result of significant investment by GT&T."

Atlantic Tele-Network, Inc. is a telecommunications company with headquarters in St. Thomas, U.S. Virgin Islands. It's principal subsidiary, Guyana Telephone and Telegraph Company, Limited, is the national telephone service provider in the Cooperative Republic of Guyana for all local, long-distance and international service. ATN recently acquired Wireless World, LLC the largest internet service provider in the United States Virgin Islands and Antilles Wireless Cable TV Company, which provides St. Thomas with wireless TV service using MMDS technology. ATN also owns a 80% interest in ATN (Haiti) S.A., formerly Digicom S.A., which provides dispatch radio, wireless data network and paging services in Haiti, and 30% of Bermuda Digital Communications Ltd., which operates under the name "Cellular One" and is the sole cellular and PCS competitor to the Bermuda Telephone Company.

This release contains forward-looking statements within the meaning of the federal securities laws. Actual results could differ materially from these statements as a result of many factors, including matters discussed in the Company's Form 10K annual report for the year ended December 31, 1999 and Form 10Q quarterly reports for the quarters ended March 31, and June 30, 2000, which are on file with the Securities and Exchange Commission.

                      ATLANTIC TELE-NETWORK, INC.
                    Selected Operations Statistics
For the Quarters Ended September 30, June 30, 2000, March 31, 2000
                       and September 30, 1999
               (In Thousands, Except Access Line Data)


Guyana Telephone & Telegraph Co., Ltd.

                          As of       As of       As of       As of
                         -------     -------     --------   --------
                        09/30/00     06/30/00    03/31/00   09/30/99
                         -------     -------     --------   --------

Access lines at end of
 period                  68,794       67,186      65,505     63,552


International Long-Distance Traffic:

                                 For the Three Months Ended
                                 --------------------------
                         09/30/00     06/30/00    03/31/00  09/30/99
                         --------     --------    --------  --------

International Minutes of Traffic:

  Inbound                15,581       15,890      15,408     15,339
  Audiotext               2,017        3,487       6,468      7,968
                         ------       ------      ------     ------
     Total inbound       17,598       19,377      21,876     23,307

  Outbound                5,133        4,626       4,480      4,191
                         ------       ------      ------     ------
     Total               22,731       24,003      26,356     27,498
                         ======       ======      ======     ======


International Minutes of Traffic Mix:

  Inbound                 68.5%        66.2%       58.5%      55.8%
  Audiotext                8.9%        14.5%       24.5%      29.0%
  Outbound                22.6%        19.3%       17.0%      15.2%
                         ------       ------       -----      -----
     Total               100.0%       100.0%      100.0%     100.0%
                         ======       ======       =====      =====