How Presence Powers OCS 2007
Presence has an important role to play in unified communications. It allows a user to know beforehand about the availability of the remote user to communicate via a given mode. Office Communications Server 2007 uses information about user availability to route communications to the most appropriate place—whether it’s sending a voice call, a video conference, an e-mail message, or an IM. And, OCS 2007 provides an enhanced presence infrastructure that allows the user to share information such as location, working hours, and meeting times. You'll want to see how the OCS 2007 system uses presence to connect endpoints.
Rajesh Ramanathan tells how Microsoft Office Communication Server 2007 enhances the presence and IM capabilities in Live Communication Server 2005 and adds advanced media and phone capabilities with Office Communicator 2007, making it a full-fledged "softphone."
For more information on OCS 2007, check out the Microsoft Office Communications Server 2007 Tech Center.