DSET Ranked No.12 Among the 50 Fastest Growing Technology Companies in New Jersey.

BRIDGEWATER, N.J.--(BUSINESS WIRE)--Aug. 24, 1998--

Five Year Revenue Growth at 1038%

DSET Corporation (NASDAQ: DSET) was recently ranked as the 12th fastest growing technology company in New Jersey by Deloitte & Touche, LLP. The New Jersey Technology Fast 50 program celebrates companies whose 5-year revenue growth warrants placement amongst the top 50 in the state. DSET's 5-year revenue growth (1993-1998) was calculated at 1038%.

The New Jersey Technology Fast 50 is a unique awards program, sponsored by Deloitte & Touche LLP. To qualify, companies must be in business for five years, with 1993 revenues of at least $50,000, be US-based, and develop and/or provide technology products or services.

"We are honored to be recognized by Deloitte & Touche and to share the Fast -50 honor with the other highly successful, high-tech companies on the list," said Paul Lipari, DSET's CFO. "It takes the full commitment of each of our employees to continue to grow the company at this rate. We are proud of the quality of our product line and the acceptance that we have received throughout the global telecommunications industry. And all through this tremendous growth, DSET has maintained a record of profitability that stretches over the past 21 quarters."

On a national level, Deloitte & Touche sponsor the National Technology Fast 500. DSET's position in the NJ Fast 50 makes it eligible to compete for national honors.

About The New Jersey Technology Fast 50 Program:

The New Jersey Technology Fast 50 Program is now in its fourth year of identifying and publicly recognizing Garden State "gazelle" companies that develop and/or provide technology based products and services. This annual statewide high-tech awards program is held to raise awareness and support New Jersey's emerging technology companies within the business community and the public at large. The 1998 New Jersey Technology Fast 50 Program is sponsored by Deloitte & Touche LLP in association with First Union National Bank, New Jersey Technology Council, Regional Business Partnership and University Heights Science Park.

About DSET:

DSET, founded in 1989, is a leading provider of standards-based application development tools, custom application development services, Local Number Portability (LNP) and OSS Interconnect Gateway solutions to the telecommunications industry. The company's application development tools are used globally by network equipment manufacturers to build applications that manage network devices and provision new services such as voice, data and Internet access. The company's LNP and OSS interconnection solutions are used by carriers to facilitate the flow of information between carriers and their respective operational support systems (OSS's). DSET's Professional Services organization provides application development services for those customers without the internal resources to quickly build network management, number portability or OSS interconnection solutions.

The company has offices in Bridgewater, NJ, Richardson, TX, Campbell and Fremont, CA, a wholly owned subsidiary in Chengdu, China, and supports a network of distributors and strategic partners around the world.

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.

Please visit our web site at www.dset.com.

    CONTACT: DSET Contacts:
              Investor Relations:
              Paul Lipari, Chief Financial Officer
              908/526-7500 x 288
                   or
              Public Relations:
              Alan R. Ehrlich, Product Marketing Manager
              908/526-7500 x 223
              e-mail: [e-mail]