Ingate® Aggressively Drives Interoperability Testing

SPRING VON, SANTA CLARA, CA, March 29, 2004- Ingate Systems AB (www.ingate.com), which produces and sells the world's only fully Session Initiation Protocol (SIP)-capable enterprise firewalls, is moving steadily toward its goal of total interoperability within the SIP community. The company is aggressively driving interoperability testing with the world's leading technology manufacturers, and today announces successful interoperability with a long list of the industry's foremost server, gateway and client vendors for the enterprise.

"Interoperability has been a critical issue for manufacturers of SIP-based products and services. Ingate's commitment to total interoperability - and the successful completion of testing with the most recognized telecommunications vendors - ensures a seamless enterprise migration to SIP-based communications for any business, of any size," said Olle Westerberg, Chief Executive Officer, Ingate Systems.

Ingate has successfully completed interoperability testing with the following vendors:

Server Vendors

• Alcatel
• Avaya
• BroadSoft
• Ericsson
• Hotsip
• Microsoft LCS
• Snom
• Ubiquity

Gateway Vendors

• Audiocodes
• Mediatrix
• QuickEagle
• Vegastream
• Verilink

Client Vendors

• Hotsip Active Contact
• Microsoft Windows Messenger
• Snom SIP Phone

"Total interoperability means our customers can be confident that their existing infrastructure, as well as all future purchases, will work seamlessly with their Ingate Firewall® or Ingate SIParator®," said Janne Magnusson, Director Operations, Ingate Systems. "We will continue to drive interoperability testing with the world's leading manufacturers to maintain this gold standard of integration."

For more information, please visit the Ingate booth #809 at Spring VON, or online at www.ingate.com.

About Ingate® Systems

A world leader in next generation firewall technology, Ingate® Systems produces and sells the world's only fully SIP-capable enterprise firewalls and the Ingate SIParator®, a device that connects to an existing network firewall to seamlessly enable the traversal of SIP communications and winner of Internet Telephony magazine's Product of the Year Award in 2002 and again in 2003. Ingate Systems has a long history of developing secure communications technology and today offers enterprises unprecedented value and ability to develop SIP-based, person-to-person real-time communications. Ingate's security products currently protect the networks of retail companies, financial institutions, industrial firms, government agencies and small-to-large enterprises throughout Europe, Asia and North America. Majority-owned by Intertex Data AB and BellNet Corp, Ingate Systems AB is located in Stockholm and Linköping, Sweden. Its wholly-owned subsidiary, Ingate Systems Inc., is located in Hollis, New Hampshire. For more information on Ingate Systems, visit www.ingate.com.

For more information, please contact:

Steve Johnson, President
(603) 883-6569
steve.johnson@ingate.com

Hillary Call, Public Relations Manager, Ingate Systems
(917) 414-9262
hillary@ingate.com