ADC and DSET Team to Offer Higher Level of Integrated Services for Competitive Telecommunications Carriers

Agreement Combines ADC's Integration Expertise
with DSET's Leading Telecom Software

MINNEAPOLIS--April 17, 2000--ADC (Nasdaq: ADCT; www.adc.com) today announced that it has signed an alliance agreement with DSET Corporation (Nasdaq: DSET), a leading supplier of business-to-business e-commerce connectivity solutions for the telecommunications industry. Under the agreement, ADC will provide DSET with comprehensive integration services to deploy DSET's electronic-bonding solutions to competitive local exchange carriers (CLECs) and data local exchange carriers (DLECs), which are telecom providers focused on non-voice applications.

The agreement, part of the DSET Alliance Program, will bring exceptional value to customers by speeding the deployment of telecommunications services to the end user through the swift integration of operational support system (OSS) components. Under the agreement, ADC will provide the integration of DSET solutions into the customer's OSS as well as testing and training for the customer's operations support staff.

DSET's electronic bonding solutions link the OSSs of telecom service providers in order to automate critical aspects of turning on and maintaining phone services to residential and business customers. These functions include generating comparative sales quotes; ordering local loops, DSL circuits, and special high-capacity circuits; supporting 911, local number portability, calling-card and caller ID services; changing long-distance providers and correcting service problems.

"For all of our CLEC clients, electronic bonding and automation of business processes are fundamental to turning on revenue streams from new customers. Our relationship with ADC will enable us to meet this basic need with a winning combination of DSET products and ADC's exceptional implementation expertise," said David Cole, director of the DSET Alliance Program.

Michael Smith, DSET's vice president of customer satisfaction, added, "Outstanding software products must be complemented by outstanding service for getting those products up and running in a customer's production environment. DSET's alliance with ADC greatly expands our resources for providing such service, giving our customers immediate access to all the assistance they need to implement the many benefits of our solutions."

The agreement also leverages ADC's expertise in other critical OSS functions such as billing and customer care. Currently, ADC and DSET are teamed together for the installation, integration and testing of the DSET suite of applications along with the implementation of an order management software package at a North Carolina-based CLEC. This customer is also reviewing the performance of Saville, ADC's billing application product line.

"We are pleased to enhance our suite of OSS offerings with DSET and know that we will add tremendous value to their customer base," said Steve Gordon, vice president of marketing for ADC's Systems Integration Division. "Our rapid implementation package of services for OSS substantially minimizes the time and resources that a CLEC has to expend to be in production."

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 www.dset.com.

About ADC:
ADC Telecommunications, Inc. is a leading global supplier of network equipment, software and integration services for broadband, multiservice networks that deliver data, video and voice communications over telephone, cable television, Internet, broadcast, wireless and enterprise networks. ADC's broadband, multiservice network solutions enable local access, high-speed transmission and software management of communications services from service providers to consumers and businesses over fiber-optic, copper, coaxial and wireless media. Headquartered in Minneapolis, Minnesota, ADC has approximately 14,400 employees around the world and annual sales of $2.1 billion. ADC's stock is included in the Standard and Poor's 500 Index and the Nasdaq-100 Index. For additional information, visit our Web site at www.adc.com.


Cautionary statement under the Private Securities Litigation Reform Act of 1995
Any forward-looking statements contained herein reflect management's current expectations or beliefs. ADC Telecommunications cautions readers that future actual results could differ materially from those in forward-looking statements depending on the outcome of certain factors, including the risks and uncertainties identified in Exhibit 99 to ADC's Report on Form 10-Q for the fiscal quarter ended April 30, 1999.

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.

Contacts:
Rob Clark -- ADC Public Relations
612.914.6355, rob_clark@adc.com

Mark Borman -- ADC Investor Relations
612.946.3338, mark_borman@adc.com

Dean Maskevich - DSET Media Relations
908.526.7500 x1366, dmaskevi@dset.com

John Murphy - Westfield Investor Relations
908.233.1558, westfieldir@worldnet.att.net

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