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Microsoft® Lync Server 2010 Unleashed by Tom Pacyk, Andrew Abbate, Alex Lewis

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Unified Messaging Protocols

The Exchange 2010 Unified Messaging servers use several telephony-related protocols to integrate and communicate with telephony devices. These protocols are listed and discussed in the following list:

Session Initiation Protocol (SIP)—This is the signaling protocol that is used to set up and tear down VoIP calls. These calls include voice, video, instant messaging, and a variety of other services. The SIP protocol is specified in RFC 3261 produced by the Internet Engineering Task Force (IETF) SIP Working Group. SIP is only a signaling protocol and does not transmit data. After the call is set up, the actual communications take place using the RTP for voice and video or T.38 for faxes.

Note

Exchange 2010 only supports ...

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