ANDA Networks Chooses DSET's GR-303 Application Development Tools for Next-Generation Digital Loop Carrier Equipment.

BRIDGEWATER, N.J.--(BUSINESS WIRE)--December 14, 1998--DSET Corporation (NASDAQ: DSET) has announced that ANDA Networks will use DSET's GR-303 Application Development Tools to build the switch interface for a digital loop carrier system that provides a highly efficient, cost-effective way to carry voice and data services over standard telecommunications facilities.

California-based ANDA Networks, formerly PackeTel, develops innovative technologies that make it possible for telecommunications providers to deliver advanced services over their existing networks. With the help of DSET's TMN-based GR-303 solution, the AN 4000 unit from ANDA Networks connects to local digital switches and offers a fast, flexible, and reliable way to deploy services no matter what technology is required. This is especially attractive to competitive local exchange carriers (CLECs), enabling them to offer a wide range of voice and data services.

"We're very pleased with DSET's GR-303 solution," said Edward Ip, president of ANDA Networks. "Since choosing the DSET solution, the AN 4000 program has moved ahead quickly and efficiently." Tony Chern, ANDA's vice-president for engineering, added, "The DSET development tools are an important part of the new capabilities that our product offers to carriers, giving them the ability to provide both high-speed data and multi-channel voice services at very competitive rates."

GR-303 is a standard industry interface for connecting a switching system in a telecommunications network with a remote digital terminal. The GR-303 specifications evolved out of the telecommunication industry's need to reduce operating and capital-equipment costs while allowing carriers to deliver a full range of services.

DSET has a long history building solutions for the GR-303 marketplace. According to Phillip Cavallo, DSET's vice president of marketing and product management, "Virtually every supplier of remote digital terminals and most central-office switch manufacturers have used the DSET GR-303 Application Development Tools or pre-built applications for their own product solutions."

About DSET:

DSET Corporation, founded in 1989, is a leading provider of software and services to the telecommunications industry. The company's application-development tools are used by network equipment manufacturers around the world to build applications that manage network components and facilitate the provisioning of new services, such as voice, data and Internet access. DSET's local number portability (LNP) and OSS interconnection solutions facilitate the flow of information between carriers and their respective operations support systems. The company's services include custom application development, consulting to engineering teams and OSS process teams, as well as interoperability testing, maintenance, and training.

Except for historical and factual information contained herein, all other information set forth in this news release represents forward-looking statements, including all statements about DSET's plans, beliefs, estimates and expectations. These statements are based on current estimates and projections that involve certain risks and uncertainties and could cause actual results to differ materially from those in the forward-looking statements. Investors are encouraged to consider these risks and uncertainties which are discussed in documents filed by DSET with the Securities and Exchange Commission, including, without limitation, fluctuation of quarterly operating results, dependence on a rapidly evolving telecommunications industry, and dependence on the TMN industry standard. DSET undertakes no obligation to publicly update any forward-looking statements whether as a result of new information, future events or otherwise.

DSET's web site can be viewed at www.dset.com.