Comverge Technologies and GTE Wireless Team Up to Offer Dynamic Energy Management Solution.

WHIPPANY, NJ/ATLANTA--(BUSINESS WIRE)--Oct. 29, 1998--Comverge Technologies Inc., a subsidiary of DSSI (Nasdaq: DSSI) and GTE Wireless, part of GTE Corp. (NYSE: GTE), today announced an agreement to co-market an innovative energy management solution to the rapidly deregulating utilities industry.

Under the agreement, Comverge will deploy its recently introduced CDC (Comverge Distributed Connection) solution for electric, gas and water industries using GTE's wireless packet data technology. Through the joint efforts of GTE and Comverge, utility companies will benefit from automated meter reading, better energy management, home automation and environmental monitoring.

"By working with Comverge, GTE can offer utility customers state-of-the-art business advantages such as remote meter reading, improved detection and response to power or water outages, better energy management and other new features," said Mike Pawlowski, GTE Wireless director of business marketing. "This is a partnership that will bring true innovation to the utility marketplace."

"The current trends toward deregulation and increased competition are driving utilities to seek new and innovative means of improving their communication and information systems," said Frank Magnotti, president of Comverge Technologies. "The agreement between Comverge and GTE will help these companies reduce costs and improve operating efficiencies. We feel there is a very strong and growing market for this unique combination of Comverge hardware and software and GTE's wireless packet data."

GTE's wireless packet data service provides fast, reliable and cost effective data access from locations in which conventional communications may not be easily accessible.

GTE Wireless provides wireless, voice, paging and data telecommunications services to more than 4.5 million customers in 17 states. GTE Wireless is a part of GTE Corp. (NYSE: GTE). With 1997 revenues of more than $23 billion, GTE is one of the world's largest telecommunications companies and a leading provider of integrated telecommunications services.

Comverge Technologies, a global subsidiary of Data Systems and Software Inc. (Nasdaq:DSSI) is a provider of end-to-end, two-way communication solutions for energy-related data, home automation, environmental monitoring and distributed generation monitoring. Their open-architecture solutions work with a variety of wide-area networks including CDPD, cable TV, telephone and personal communication services (PCS). Comverge has deployed systems in the United States, Venezuela, Argentina, Israel and Mexico. Comverge's U.S.-based operations are headquartered in Whippany, N.J. International operations are based in Israel. For additional information, please visit the Comverge website at www.comverge-tech.com.