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SIP session control added to Net.com’s ShoutIP

Network Equipment Technologies Inc. (Net.com) today announced new features for its ShoutIP platform for IP telephon...


October 20, 2004  


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Network Equipment Technologies Inc. (Net.com) today announced new features for its ShoutIP platform for IP telephony.

Network address translation (NAT) traversal, which the Fremont, Calif. company says is a challenge for all Voice over Internet protocol (VoIP) networks both in the enterprise and carrier space, is addressed in this release to prevent IP-based voice calls from being blocked by an enterprise firewall.

ShoutIP modifies VoIP signaling (SIP and H.323) to ensure a call passes through the NAT correctly.

It also includes SIP (session initiation protocol) registration for enhanced session border control between SIP-enabled telephones and an enterprise IP PBX, or carrier IP Centrex server.

This enables SIP phones in a private network to work with an external proxy in the public network.

According to Stephen Gleave, vice president of marketing at net.com, the company has long been a proponent of migration over ‘rip and replace,’ a path that is just not practical for most large enterprises.

"A migration plan enables customers to leverage existing assets while moving forward to achieve cost savings and deploy new IP functionality long before assets have been written off," he said.