Microsoft and Nortel on Monday introduced a fully hosted unified-communications and collaboration service for carriers, the first entirely hosted carrier-grade offering to come out of an alliance struck between the companies two years ago.

At the NXTcomm08 conference in Las Vegas, Microsoft and Nortel unveiled a suite based on Nortel Communications Server 2000, an IP multimedia softswitch, and the Microsoft Solution for Hosted Messaging and Collaboration Version 4.5 (HMC 4.5), a combination of hosted versions of both Microsoft Office Communications Server 2007 and Microsoft Exchange Server 2007.

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