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Tandberg server bridges SIP, H.323

Tandberg server bridges SIP, H.323

By:  Tim Wilson  On: 26 Aug 2007 For: Network World Canada Creator

The company offers a product that includes the FindMe call forwarding application, call control and firewall traversal while supporting two different protocols in an effort towards greater interoperability

Tandberg’s new Video Communication Server has two notable features: the FindMe call forwarding application, and call control and firewall traversal that support Session Initiation Protocol (SIP) as well as H.323.

First things first: the SIP traversal capability is good news, the only question being what took so long. If you line them up side-by-side, H.323 may win-out over SIP — and Skype may be anti-SIP and anti-H.323 — but everyone from Google to Microsoft to the open-source VoIP community is SIP-friendly.

“When I hear about SIP and videoconferencing, frankly, I think, ‘big deal’,” says Nora Freedman, senior analyst in the enterprise networks group at IDC.

The SIP/H.323 traversal is a step toward interoperability, but videoconferencing, and particularly the higher-end world of telepresence, is still a world of silos.

“We have a strategic relationship with HP,” says Mike Roussey, product marketing manager of infrastructure products at Tandberg, “and the intent and direction is to enable Tandberg systems on the HP network, but this is a work in progress.”

Roussey was specific in positioning Tandberg as moving toward interoperability for videoconferencing as opposed to telepresence.

“Each of these solutions is very proprietary,” says Freedman. “It only really works with a one-to-one relationship.”

This is likely more true of the high-end offerings from the likes of Cisco and HP Halo, which runs as a managed service off a proprietary backbone. Nonetheless, Tandberg seems to be taking the issue of interoperability much more seriously than other vendors. Work on the SIP stack has been going on for years, and end-point management systems were deployed as early as 2005.

“In 2006 SIP was enabled in multiple bridging applications at over 100 sites. We’re bringing in Nortel, Alcatel, and Cisco for interoperability,” says Roussey. “This year our goal is complete end-to-end SIP.”

Now Tandberg can brag that end-points can support SIP and H.323 at the same time, and that it supports multi-point calls without rebooting. Feature parity includes encryption, firewall traversal, call control, and bandwidth management at the gateway.

For Tandberg, however, the goal is desktop interoperability, and the FindMe function certainly does this, even moving into the possibility of conferencing over cell-phones.

“The FindMe function allows for call forwarding, and if you don’t answer it defaults to voice-mail. These calls don’t have to be booked,” says Roussey, adding, “There are already 3G mobile operators in Europe and Asia that are offering videoconferencing.”

In Canada one of the most important partners for Tandberg is Telus.

"We are the largest video conferencing provider in Canada, period,” says Frazer Couzens, Telus’s director of collaboration. Couzens is understandably bullish on the partnership with Tandberg; however, he has some added credibility given that Telus also partners with Cisco, Polycom, Nortel, and Avaya.


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Tim Wilson Tim Wilson is a contributor to the International Data Group (IDG) News Service, which publishes global technology stories from bureaus around the world to more than 300 publications in more than 60 countries.

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