REAL-TIME COMMUNICATIONS
New to Windows Server 2003 is the Real-Time Communications (RTC) architecture. It is based on the Session Initiation Protocol, which is standardized under IETF's RFC 2543. This protocol was adopted by the telecommunications industry for session management, call control, presence, and instant messaging.SIP provides the ability to create and manage any type of session. It also provides the ability to separate the physical devices such as telephones. In turn, users and the service logic are removed from centralized control.SIP provides the ability to locate and communicate with any entity represented by a Uniform Resource Identifier (URI). This addressing schema allows SIP to use any combination of Internet technologies.