Press Release

Data Connection Completes IS-IS Routing Testing at UNH-IOL Lab

Data Connection's DC-ISIS routing protocol stack successfully passes conformance testing at UNH-IOL test lab

Chicago, IL: June 7, 2005. Data Connection Limited (DCL), the world's leading independent provider of communications protocol software, today announced the successful completion of testing of its Intermediate System to Intermediate System (DC-ISIS) routing code at the University of New Hampshire InterOperability Laboratory (UNH-IOL).

DC-ISIS is Data Connection's highly portable source code solution that implements full IS-IS protocol support, including ISO 10589 and RFC 1195. DC-ISIS fits into the same architectural framework as Data Connection's other IP Routing protocol products (including DC-OSPF, DC-RIP and DC-BGP) and can be easily integrated with DC-MPLS to provide a complete control plane solution for routers and switches, or can be used on its own or with third-party products. Founded in 1981, Data Connection has been developing portable routing code for a wide range of technologies for over 20 years.

"The IS-IS protocol is gaining increasing acceptance from service providers and others, and strong IS-IS code will continue to be crucial for many commercial networks," said Kari Revier, UNH-IOL IP Routing Consortium Manager. "Data Connection successfully completed stringent testing to thoroughly validate its code with the standard in our laboratories."

"UNH's InterOperability Lab is a useful tool for Data Connection. It provides us with an independent platform to reinforce our commitment to quality and industry compatibility with our routing customers," said Tim Hall, Vice President, Data Connection Networking Protocols.

Data Connection is exhibiting at SUPERCOMM 2005, Booth #60046. UNH-IOL will be exhibiting at Booth # 44089.

About Data Connection

Data Connection Limited (DCL) is the leading independent developer and supplier of Unicast and Multicast IP Routing, MPLS, SIP, MGCP/Megaco, SBC, ATM, and SNA portable products, as well as Web Conferencing, Voicemail, Unified Messaging, and Directory applications. The company's MetaSwitch division supplies the industry's leading Class 5 Softswitch, with both integrated (Integrated Softswitch) and distributed architecture options including call agent, feature server, media gateway and signaling gateway functionality. The MetaSwitch Class 5 Softswitch has been widely deployed among incumbent and competitive local exchange carriers, as well as operators of broadband wireless, cable and fiber networks.

Net profits have exceeded 20% of revenue every year since the company was founded in 1981. Customers include BT, Cisco, IBM, Lucent, Microsoft and Verizon. With over 300 employees, Data Connection is headquartered in London, UK with US offices in Alameda, CA, Boxborough, MA, Dallas, TX, and Reston, VA. For more information please see www.dataconnection.com.

About the University of New Hampshire InterOperability Laboratory

Established in 1988, the University of New Hampshire InterOperability Laboratory (UNH-IOL) is a non-profit organization that offers comprehensive interoperability and conformance-based testing through 19 technology-based groups, called consortia. Test solutions created at the UNH-IOL offer a set of methods to increase interoperability through protocol operations, signaling, point-to-point and multi-system scenarios. For more information, visit the UNH-IOL website at: www.iol.unh.edu.

Data Connection is a trademark of Data Connection Limited and Data Connection Corporation. All other trademarks and registered trademarks are the property of their respective owners.