CommTech and DSET Announce Alliance to Provide ASP-Hosted Service Management Solutions

Cranbury, NJ, and Bridgewater, NJ - February 24, 2000 - CommTech Corporation and DSET Corporation (NASDAQ: DSET) today announced the integration of CommTech's FastFlow® products and DSET Corporation's ezConnect gateway software to provide seamless end-to-end telecom service management solutions. CommTech is a top provider of zero-touch, end-to-end flow-through provisioning and eBusiness infrastructure solutions. DSET Corporation is a leading supplier of business-to-business e-commerce solutions for the telecom industry.

The two companies will work together to deliver solutions for communications service providers (CSPs) via CommTech's FastFlow® ASP offering. On February 2, 2000, CommTech became the first OSS company to announce a customer for an ASP-hosted OSS offering when it revealed that rapidly-growing Canadian CLEC Combined Telecom Inc. (CTI) had selected FastFlow ASP.

DSET President and Chief Executive Officer William P. McHale will join Yankee Group Executive Vice President Rob Rich; CommTech founder, President, and Chief Executive Officer Frank M. Fawzi; and CTI's President and Chief Executive Officer Robert Koven on a global webcast Thursday, February 24, 2000, at 1:00 PM US Eastern Time. Title of the webcast is "On the Menu: OSS Served Up ASP-Style;" to register, prospective attendees should go to www.mshow.com/commtech.

Through FastFlow ASP, CommTech serves as an application service provider (ASP) which, with partners such as DSET, offers hosted software applications to providers of voice, DSL, and cable services. FastFlow ASP helps emerging CLECs/DLECs to quickly enter markets with far less upfront cost and time than possible via traditional OSS development. Its innovative pricing models create a metered OSS structure that directly ties CommTech's compensation to the success of the CSP in selling new lines and services using the ASP-delivered OSS.

"We believe the innovative business models and proven telecom eBusiness infrastructure that make CommTech's ASP proposition so powerful to emerging CSPs will also contribute to the continuing expansion of DSET's leadership in this market," said Paul Smith, Senior Vice President, Strategic Planning and Product Management, DSET.

CommTech Vice President/Product Management Mark A. Dennis said, "We welcome DSET to the FastFlow ASP program, which combines leading-edge offerings and revolutionary pricing models to provide an entirely new business proposition for the market. We are pleased that the value CommTech adds to the market - empowering end users with direct, rapid, Web-based access to the best available communications services - continues to position us to work with other best-of-breed providers such as DSET."

CommTech and DSET Products Help CSPs Enter Markets and Compete Effectively

DSET gateway products automate the generation of sales quotes, the ordering of local loops and high-capacity circuits, as well as providing support for number portability, 911 emergency service, calling card, and caller ID services. DSET solutions also ensure that CLEC customers are served by their preferred long-distance carriers and that service problems are resolved quickly and efficiently. In addition to serving carriers that provide conventional voice and data services, DSET products support operations for carriers offering digital subscriber line (DSL) service.

CommTech's FastFlow® Order Fulfillment Suite automates, via a single interface, the processes key to effective delivery of communications services, including management of workflow, ordering, product/service catalog, workforce, inventory, and trouble ticketing systems. CommTech's FastFlow® Service Activation Suite empowers CSPs to provision and activate services across voice, data, and cable telephony platforms. CommTech's FastFlow® eSuite product enables CSPs to offer an eBusiness web portal to in-demand applications, building on CommTech's broad expertise in security and partitioning databases for end user control.

About DSET:

DSET Corporation (NASDAQ: DSET) is a leading provider of business-to-business e-commerce solutions for the global telecommunications marketplace. The DSET suite of electronic-bonding gateways is designed to interconnect the operations support systems (OSSs) of service providers that must exchange information and share network capabilities with trading partners to provision and maintain a growing range of services for customers in the competitive telecom market. DSET's local number portability solutions play a key role in enabling business and residential customers to change service providers without changing their local phone numbers. 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.

DSET Contacts:

Media Relations: Kathy Claxton, Corporate Marketing Communications Manager, 908-526-7500 Ext. 1280, e-mail: kclax@dset.com

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

About CommTech:

CommTech provides Web-based, zero-touch, end-to-end flow-through provisioning and eBusiness infrastructure solutions for the New Economy, helping communications service providers (CSPs) generate revenue by giving end users rapid access to voice, DSL, cable, and other services. CommTech software suites currently manage more than five million lines in North America and Europe. CommTech customers and partners include more than 50 ILECs, IXCs, CLECs/DLECs, network equipment manufacturers, cable CSPs, international operators, other telecom and OSS vendors, and systems integrators. CommTech is a member of and active participant in the TeleManagement Forum (TMF), ADSL Forum, Association for Local Telecommunications Services (ALTS), and ASP Industry Consortium. Headquartered in Cranbury, NJ, US, CommTech has R&D and regional offices throughout the US; Toronto, Canada; Gloucestershire, U.K.; and Hoofddorp, The Netherlands. For more information please visit www.comm.com or call 888-COMMTECH.

FastFlow® is a registered trademark of CommTech Corporation.

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

All other trademarks are property of their respective owners.