3. Introduction
With the model defined by the operators, the telephone
network could not provide any other services than the
scheduled ones.
So, the emergence of a new concept, the intelligent
network ( “Intelligent Network IN”)
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9. SIP Protocol
•Session Initiation Protocol is a protocol
standardized by the IETF.
•Designed to establish, modify and terminate
multimedia sessions
•Does not convey the information exchanged
during the session such as voice or video
•RTP provides the most audio and video
sessions
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10. IMS Call: SIP & IMS
•SIP has been chosen by the IMS for its simplicity
and its specific role.
•Also,in the instant messaging, it will detect the
presence or not of the subscriber.
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