Network Plus Receives Certification from Bell Atlantic for Electronic Bonding

DSET's Solutions Significantly Reduce Provisioning Process

Quincy, Massachusetts (May 8, 2000) - Network Plus, Inc. (NASDAQ: NPLS) has announced it has been certified by Bell Atlantic (NYSE: BEL) for electronic bonding which will significantly reduce the time to provision its local service products. DSET's (NASDAQ: DSET) ezConnect Gateways power the system that creates a "Zero-Time Interface", or ZTI, which will result in expediting the provisioning process, reducing most transactions from a matter of days to minutes.

``This will greatly improve our speed in provisioning orders, improve the accuracy of the orders submitted, and diminish the number of orders that are rejected, because DSET's services allows us to electronically bond with Bell Atlantic," commented Robert Hale, Jr., president and CEO of Network Plus, Inc. Currently, Network Plus has over 200 sales representatives in eight sales offices as well as 30,000 customers in Bell Atlantic regions that will immediately benefit from this process.

"We are very pleased that Network Plus has been certified throughout the Bell Atlantic regions using our ezConnect electronic-bonding gateway," said Phil Cavallo, DSET's senior vice president of worldwide sales and marketing. "Testimonial to the efforts of both Network Plus and DSET, we were able to automate an otherwise unscalable process. This new process, as well as the automated ezSubscribe process, will enable Network Plus to expand their sales coverage and turn up new customers more rapidly and without the expense of adding a significant number of IT staff to keep pace with business growth."

About Network Plus:

Founded in 1990, Network Plus is based outside of Boston in Quincy, Massachusetts, with sales offices along the eastern seaboard. Network Plus is a network-based integrated communications provider (ICP) offering broadband data and voice telecommunications service, primarily to small and medium-sized business customers located in major markets in the northeastern and southeastern regions of the United States. Network Plus operates and owns local, long distance, and data networks in the northeastern and southeastern United States. Currently, Network Plus sells its services from each of its twelve branch sales offices as well as through its wholesale channels across the country while managing its network from its Network Monitoring and Surveillance Center in Melville, NY, and Data Centers in New York, NY, and Cambridge, MA. In June 1999, the company became publicly traded on the NASDAQ National Market. More information about Network Plus can be found via the company's Web site at www.np1.com or by calling (888) NET-PLUS.

About DSET:

DSET Corporation is a leading provider of business-to-business e-commerce connectivity 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 http://www.dset.com.