American TeleSource Opens Its First Communication Center in the United States; Additional Centers to Open in San Antonio, Brownsville and Mission, Texas.

Business Editors/High-Tech & Telecommunications Writers

SAN ANTONIO--(BUSINESS WIRE)--March 22, 2000

American TeleSource International, Inc. (AMEX:AI) announced today the opening of its first Communication Center in the United States. The inaugural Center is located in Laredo, Texas, operating under the name Computel(SM).

Arthur L. Smith, Chairman and CEO, commented, "Currently, ATSI is the largest independent owner of Communication Centers throughout Mexico. We maintain 130 stores in 66 Mexican cities that operate under the Computel name. Over Computel's 12-year operating history, it has earned nationwide brand recognition and customer loyalty. The Laredo Center represents the first step in bringing our successful Mexican retail strategy to the United States. The targeted Latino customer for Computel lives in the U.S. or Mexico, usually does not have basic telephone service, and needs to communicate with family and friends across the border. Through this well-known and widespread retail distribution network, ATSI is bringing its borderless customers an array of services, which are typically beyond their reach. These services go beyond basic telephony to include Internet, voice mail, prepaid cellular and paging."

Mr. Smith continued, "Our retail strategy is not only to expand the service offerings in our existing Communication Centers, but also to increase the number of locations in both the U.S. and Mexico. Over the next quarter, we anticipate opening additional Centers in the Texas cities of San Antonio, Brownsville and Mission."

American TeleSource International, Inc. is an emerging international carrier serving certain niche markets in and between Latin America and the United States. The Company's borderless strategy includes the deployment of a "next generation" network for more efficient and cost effective service offerings of domestic and international voice and data. ATSI has clear advantages over the competition through its corporate framework consisting of unique licenses, interconnection and service agreements, network footprint, and extensive retail distribution. ATSI's wholly owned subsidiary, GlobalSCAPE, Inc. (www.globalscape.com), is a leader in the development, marketing, distribution and support of award winning Internet-based software in a broad array of categories including file management, multimedia utilities and Web site development tools.

This news release contains forward looking statements such as "The Laredo Center represents the first step in bringing our successful Mexican retail strategy to the United States and Over the next quarter, we anticipate opening additional Centers in the Texas cities of San Antonio, Brownsville and Mission." These statements describe management's beliefs and expectations about the future. We have identified forward looking statements by using words such as "expect," "believe," and "should." Although we believe our expectations are reasonable, our operations involve a number of risks and uncertainties, and these statements may turn out not to be true. Risks that could cause these statements not to be true include loss of key customers, inability to obtain additional capital, inability to make payments to suppliers and lenders on time, dilution of our common stock, equipment failures leading to service interruptions, failure to profitability, and other Risk Factors discussed in filings made by the Company with the SEC.