1. Principle

The SIP protocol [2] is the result of an approach dedicated to telephone signaling over the Internet within the MMUSIC (Multimedia Multiparty Session Control) group [1] .

It integrates address transformation, user location, call set-up and call management functions, including capacity negotiation (supported flow formats and their parameter settings).

1.1 SIP components

SIP defines two components, both of which can implement either a request preparation service or a request processing service: the protocol is therefore client-server.

The first component is called the User Agent...

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References

(1) - HANDLEY (M.), CROWCROFT (J.), BORMANN (C.), OTT (J.) - The Internet Multimedia Conferencing Architecture - . Internet Draft draft-ietf-mmusic-confarch-03.txt (expiration janvier 2001).
(2) - HANDLEY (M.), SCHULTZRINNE (H.), SCHOOLER (E.), ROSENBERG (J.) -...

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