|
URL: http://www.ietf.org/rfc/rfc2543.txt
The
Session Initiation Protocol (SIP) is an application-layer control (signaling)
protocol for creating, modifying and terminating
sessions with one or more participants. These sessions include Internet
multimedia conferences, Internet telephone calls and
multimedia distribution. Members in a session can communicate via multicast or
via a mesh of unicast relations, or a combination of these. SIP invitations
used to create sessions carry session descriptions that allow participants to
agree on a set of compatible media types. SIP supports user mobility by
proxying and redirecting requests to the user's current location. Users can
register their current location. SIP is not tied to any particular conference
control protocol. SIP is designed to be independent of the lower-layer
transport protocol and can be extended with additional capabilities.
Keywords:
|
