DSET Ships ezLocal 3.0.2 Ordering Gateway

Gives Competitive Service Providers New Capabilities for Interconnection with Trading Partners

Bridgewater, NJ - November 28, 2000 - (Nasdaq: DSET) - DSET Corporation, a leading supplier of solutions that enable competitive telecom providers to build an automated Trading Partner Network, is shipping a new release of its widely used ezLocal gateway, which electronically interconnects competitive providers with trading partners to automate ordering network facilities, including digital subscriber line (DSL) circuits.

Enhancements offered by ezLocal 3.0.2 include the Interactive Agent protocol, which expands the flexibility of ezLocal for interconnecting competitive providers with trading partners such as Pacific Bell, Qwest Communications, Southwestern Bell, and Verizon. ezLocal 3.0.2 also supports the use of the Oracle8i database and the Solaris™ 7 operating system from Sun Microsystems.

The new ezLocal release extends additional support for LSOG 4 to the DSET solution's stand-alone order entry interface, which enhances the gateway's utility for electronic interconnection with BellSouth, GTE, the Verizon North Region, and the Verizon South Region. LSOG is an acronym for Local Service Ordering Guidelines, the set of voluntary guidelines that facilitates the interconnection between competitive service providers and trading partners that enables the competitive providers to quickly turn on services for new customers migrating from incumbent carriers. Support for LSOG 4 will also facilitate provisioning xDSL service for competitive carriers interconnecting with BellSouth.

In addition to offering a generic interface, ezLocal 3.0.2 is fully integrated with the latest version of MetaSolv Software, Inc.'s (Nasdaq: MSLV) Telecom Business Solution™ (TBS™) order management and service fulfillment solution and with CommTech Corporation's FastFlow® Order Fulfillment Suite and FastFlow Service Activation Suite.

"DSET's ezLocal gateway clearly sets the standard for automated ordering in the competitive telecom industry," said Paul Smith, DSET's senior vice president of strategic planning and product management. "Deployed by competitive service providers across the U.S., ezLocal enables interconnection with virtually any trading partner. ezLocal is tightly integrated with the latest industry standards and offers features to meet the needs of all providers in the market, ranging from facilities-based wireline voice and data providers to resellers operating completely in UNE-P mode, wireless providers, and companies specializing in telecom services for individual buildings."

About DSET
DSET Corporation is a leading supplier of software and services that enable telecommunications providers to rapidly implement electronic Trading Partner Networks, which significantly reduce the time required to provision services for customers and resolve service outages to maintain high service quality and ensure customer retention. DSET is headquartered in Bridgewater, New Jersey, and the company's Web site can be viewed at www.dset.com.

Statements regarding financial matters contained in this press release, other than historical facts, are forward-looking. Since all statements about DSET's plans, estimates, and expectations are based on current projections that involve risks and uncertainties, and are subject to change at any time, the company's actual results may differ materially from expected results. Investors should consider these risks and uncertainties, which are discussed in documents filed by DSET with the Securities and Exchange Commission. These documents identify important factors that could cause the actual results to differ materially from those contained in the projections or forward-looking statements. DSET expressly disclaims any obligation to update any forward-looking statements.

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DSET Contacts:
Media Relations: Dean Maskevich, DSET Marketing Communications, 908-526-7500 Ext. 1366, e-mail: dmaskevi@dset.com

Investor Relations: John P. Murphy, Westfield Investor Relations,
908-233-1558, e-mail: westfieldir@worldnet.att.net

DSET and the DSET logo are registered trademarks of DSET Corporation.

MetaSolv is a registered trademark, and MetaSolv Software and TBS are trademarks of MetaSolv Software, Inc.

FastFlow® is a registered trademark of CommTech Corporation.

All other trademarks are the property of their respective owners.