Press Release

Data Connection Participates in Global SIP Interoperability Test Event, SIPit 17

SIPit 17 Advances Session Initiation Protocol (SIP) Technology

London, UK: September 19, 2005. Data Connection Limited (DCL), the world's leading independent provider of communications protocol software, announced today its successful participation in SIPit 17, the seventeenth SIP interoperability test event organized by the SIP Forum (www.sipforum.org) which was held in Stockholm, Sweden over the past week.

A SIPit, Session Initiation Protocol Interoperability Test, is a heavily engineer-focused event that offers a venue for developers of SIP-based products to meet and perform a wide variety of interop tests. The SIP software engineers are usually on site fixing any bugs that may arise, which speeds up the testing process and resolves future interoperability problems. The SIPits, held twice a year, are a driving force shaping SIP into a protocol that interoperates globally for real-time Internet communication services.

Data Connection successfully tested its DC-SIP and DC-SBC solutions with a variety of SIP proxies, servers, registrars, IP phones, softphones, gateways, and B2BUAs. Tim Hall, Data Connection's Vice President of Network Protocols, said, "The SIPits are incredibly valuable to the product development cycle. In just a few days, we were able to prove interoperability with our DC-SBC solution and numerous SIP platforms which better prepares our products for real world scenarios."

About DC-SIP

DC-SIP is one of Data Connection's family of VoIP protocol toolkits. These provide portable source code, full reference designs, test applications, customization tools, and pre-integration with all the leading Operating Systems. The toolkits, combined with Data Connection's superior customer service organization and unrivalled commitment to quality, provide customers with significant project cost savings and the quickest time to market.

About DC-SBC

Drawing from technology and experience from multiple divisions of Data Connection the Network Protocols division has developed a fully portable Session Border Controller (DC SBC) software solution designed specifically for system vendors. Data Connection's extensive VoIP and IP routing heritage provides OEMs with a field-hardened SBC solution that is deployable immediately, delivering dramatic cost and time to market savings. Like all Data Connection products, DC-SBC is developed with the highest quality standards and is architected for unparalleled modularity, flexibility, scale, and reliability.

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.

Contact Information:

Joe Whitehouse
Data Connection
Network Protocols Group

Phone: +1 978 635 0004

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.