Nortel Networks is stopping development of its own presence server for its IP multimedia subsystem (IMS) portfolio in favor of using that of a third-party vendor, Followap.

Rob Scheible, leader of Nortel’s VoIP product and technical marketing group, said Nortel developed its own presence solution four years ago and has sold it as part of its multimedia portfolio to some 40 customers. “We decided, though, that is was not a technology that we wanted to continue to develop,” Scheible said. “We wanted to focus on our core IMS products.”

Scheible said Nortel chose Followap because it had the most complete portfolio of presence products, leaving Nortel free to focus on the critical components of the IMS architecture, the call session control function and home subscriber server as well as its VoIP and session initiation protocol expertise.

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