ADA awarded first Asian installation for circuit testing and performance monitoring at Chunghwa Telecom

Business Wire, May 12, 1997

SAN DIEGO--(BUSINESS WIRE)--May 12, 1997--Applied Digital Access Inc. (NASDAQ:ADAX) Monday announced that Chunghwa Telecom Co. Ltd. of Taiwan has placed an order for ADA's T3AS Test and Performance Monitoring System under a competitive bid.

As ADA's first Asian award, T3AS will provide full-time performance monitoring of Chunghwa Telecom's circuits and is planned for deployment by the Central Taiwan Business Group. With T3AS, Chunghwa Telecom can remotely obtain on-line performance data on DS1 circuits and test DS1 and DS0 circuits from a central location.

ADA's T3AS system enables organizations such as Chunghwa Telecom to offer improved reliability and performance along their DS1 and DS0 lines. Instead of having to send multiple units to test for trouble along a T1 line, T3AS allows the mance Monitoring System, Centralized Test System (CTS) and Remote Module, ADA has built a portfolio of proho are reevaluating and upgrading their infrastructure components to remain competitive.

ADA's other operations system software includes the Traffic Data Collection and Engineering (TDC&E) system which is a critical component in managing service quality in switched networks, and the Fault Management System (FMS) which is a highly scaleable alarm management system used to monitor the health of large heterogeneous networks in real time.

Applied Digital Access is a leading provider of Network Performance Management products that include systems, software and services used to manage the quality, performance, availability and reliability of telecommunications service providers' networks. These products enable telecommunications service providers to improve quality of service, increase productivity and lower operating expenses. The company has headquarters in San Diego.

News releases and other information about Applied Digital Access and its products and services are available at http://www.ada.com on the Internet. -0- NOTE: "Safe Harbor" statement under the Private Securities Litigation Reform Act of 1995: Except for historical information contained in this release, the preceding may contain forward-looking statements that involve potential risks and uncertainties as detailed in the company's Annual Report on Form 10-K for the year ending Dec. 31, 1996, and the most recent Form 10-Qs, which include the concentration of major customers, telephone company qualification requirements, high dependence on single product line, competition, management of changing business, mergers, rapid technological change and dependence on new products, dependence on suppliers and subcontractors, need to make advance purchase commitments, government regulation, proprietary technology, dependence on key personnel and volatility of stock price. The company's actual results could differ materially from those discussed in this release. Readers are cautioned not to place undue reliance on these forward-looking statements which speak only as of the date hereof. The company undertakes no obligation to revise or update these forward-looking statements to reflect events or circumstances after the date of this release.

CONTACT: Applied Digital Access Inc., San Diego

Steve Murphy/Peter Savage, 619/623-2200

619/623-2208 (fax)

or

The Townsend Agency

Susan Eppel, 619/457-4888

619/453-7010 (fax)