Chapter 4. Basic IM and Presence Scenarios

This chapter introduces the basic login process, presence, and instant messaging (IM), and it discusses the services and capabilities that these provide. The chapter walks through a user-level view of actions taken in Microsoft Office Communicator 2007 for each of these three areas, and then explains in depth the same actions with a view of the protocols, algorithms, and systems that make these processes work. This chapter also provides the core background on basic server and client operations in terms of discovery, connectivity and communications over the ...

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