Press Release

Data Connection SIP Software Supporting Over 1 Billion Calls This Year

Installation With Tellme Networks Powers Nationwide Directory Assistance Calls

San Jose, CA: March 8, 2005. Data Connection Limited (DCL), the world's leading provider of communications protocol software, announced today at the Spring VON 2005 show (Booth #829) that Tellme Networks, Inc.™ has incorporated Data Connection's DC-SIP software solution into their network, enabling over 1 billion directory assistance calls using VoIP this year. Tellme is using Data Connection's SIP software to connect directory assistance calls to Tellme's data centers nationwide.

Session Initiation Protocol (SIP) is an industry standard signaling protocol for controlling multi-media sessions, such as voice, video, and messaging, across packet based networks. SIP is an essential part of the family of Voice over IP (VoIP) technologies that is powering innovative companies, such as Tellme, to offer more services and flexibility to their customers but at significantly less cost and complexity than that of traditional voice networks.

"Directory assistance will drive millions of SIP sessions per day to the Tellme data centers, which essentially makes our network one of the largest SIP endpoints in the world," said Troy Chevalier, Tellme's VP of Platform Engineering.

"Tellme handles a third of all the directory assistance calls made in the United States. The use of our DC-SIP solution in the Tellme application is a true testimony to the scale and high reliability of our products," said Phil McConnell, Data Connection's CEO.

"Our applications demand that our technology providers deliver on scale, reliability, and above all quality. We were extremely thorough in our search for a SIP solution. We chose Data Connection because our evaluation indicated they were the right company, with the right product to fulfil these needs. We are very happy with our decision," added Chevalier.

Tellme Networks, located in Mountain View, California, operates the world's largest IP application network for the phone. Tellme combines open Internet standards and speech technology to power the largest customer service, directory assistance and consumer phone services nationwide.

DC-SIP is part of the VoIP-related protocol solutions offered by Data Connection, which also include DC-MGCP and DC-Megaco/H.248. All of Data Connection's protocols are designed and tested for scale, reliability and portability to numerous environments and applications. To discover more about the technical strengths of DC-SIP, and to see a full features list, go to www.dataconnection.com/sip.

About Data Connection

Data Connection Limited (DCL) is the leading independent developer and supplier of Unicast and Multicast IP Routing, MPLS, SIP, MGCP/Megaco, 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 (Compact 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.

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.