Applied Digital Access Adds Powerful Remote Network-Management Capabilities in .Provisioner 3.0.

SAN DIEGO--(BUSINESS WIRE)--Dec. 14, 1998--

Browser Interface Platform Independence and Support for

Next-Generation Digital Loop Carriers are Among Key Benefits

Applied Digital Access Inc. (ADA) (NASDAQ:ADAX) today announced the availability of .Provisioner 3.0, a telecom service-activation and circuit-provisioning network-management application with new features that boost remote-access flexibility and enhance customer control of the entire process of activation of new services.

Key enhancements are a Web-based graphical interface, a customer virtual network-management tool and integrated support for next-generation digital loop carriers (NGDLC). By using .Provisioner 3.0, the telecommunications service provider and enterprise end-user can take advantage of a larger number of functions that flow naturally from using a browser interface -- whether activating services or provisioning time-division multiplex (TDM) asynchronous or SONET services.

.Provisioner 3.0 users will realize immediate benefits in the following areas:

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--   The Web-based graphical interface allows the telecommunication
     service provider's operations staff to access network functions
     from remote locations -- freeing them from the tether to the
     central office. In the past, a field technician on a customer
     service call who wanted to test and configure a newly installed
     SONET or T1card had to return to the central office to execute
     these tasks.

     .Provisioner 3.0 allows configuring and testing on site, using
     any combination of telephone interface and modem. "Network access
     via the Internet is now possible from virtually any PC. This
     reduces telecom expenditures and provides platform independence
     to authorized users for the first time," said Steve Mueller,
     product line manager for Applied Digital Access.

--   With release 3.0, .Provisioner becomes a virtual
     network-management tool. .Provisioner 3.0 is equipped with a
     Web-based graphical user interface that delivers this critical
     functionality directly to the end-user and enterprise customer.
     Corporate IT professionals are empowered to view, monitor,
     activate and reconfigure their WAN circuits based on bandwidth
     requirements or network outages.

     A customer's data center experiencing problems that require
     switching all network circuits to a backup data facility could
     complete the task in minutes rather than hours. Telecommunication
     service providers support this development, Mueller said, because
     it helps them generate a new revenue stream by charging their
     customers to activate, manage and gain access to specific
     circuits.

     End-users can take a proactive approach by creating, in advance,
     the alternate circuits that will be switched over during a
     network outage or similar event. This automatic recovery
     potential will enable telephone companies to differentiate their
     services in order to gain new customers and retain existing ones
     because it increases customer satisfaction. .Provisioner 3.0
     supports customer circuit correlated fault management.

--   One of the most forward-looking new features in .Provisioner 3.0
     is integrated support for the NGDLC. This capability enables
     users to find, activate and manage end-to-end access. "For the
     first time, .Provisioner can manage the intelligent access
     elements of a network in addition carrying out its historical
     role as the manager of transport nodes," Mueller said. The NGDLC
     capability builds on the existing foundation and introduces
     .Provisioner's integrated access and transport capabilities,
     making it the most versatile end-to-end one-touch
     service-activation solution on the market.

.Provisioner delivers a superior service-management capability for enterprise networks across multi-vendor access and transport elements. .Provisioner's flexible multi-domain technology manages asynchronous/subrate, SONET, SDH and ATM/Frame packet-switch based network services.

"In earlier releases, .Provisioner made its mark on the telecommunications industry by primarily delivering benefits to the staff of telecommunication service providers network operations centers. Now, however, .Provisioner yields true platform-independent remote access and supports the next generation of digital loop carriers," Mueller said.

ADA also offers a family of fault- and alarm-management, and test-management operations systems software, including Fault Management System (FMS), a fault and alarm-management system for real-time monitoring and management of telecommunications networks, and TestOS, a comprehensive test-management OS application.

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 telecommunication service providers' networks. These products enable telecommunication service providers to improve quality of service, increase productivity and lower operating expenses.

The company is headquartered in San Diego, and has product-development and support facilities in Vancouver, B.C.; Terre Haute, Ind.; and Richardson, Texas. Press releases and other information about Applied Digital Access, its products and services are available at http://www.ada.com.

"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 ADA's Annual Report on Form 10-K for the year ended 12/31/97 and the most recent 10-Qs, which include fluctuations in quarterly operating results, history of losses, competition, concentration of major customers, telephone company qualification requirements, high dependence on two product lines, management of changing business, customer mergers, rapid technological change and dependence on new products, dependence on suppliers and subcontractors, high inventory levels and need to make advance purchase commitments, Year 2000 compliance, product recall and defects, government regulation, potential competition from RBOCs, proprietary technology, dependence on key personnel and volatility of stock price. The company's actual results could differ materially 9from 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.