I-D ACTION:draft-ietf-mmusic-sip-07.txt,.ps

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directories.  This draft is a work item of the Multiparty Multimedia
Session Control Working Group of the IETF.

	Title		: SIP: Session Initiation Protocol
	Author(s)       : M. Handley, H. Schulzrinne, E. Schooler,
			  J. Rosenberg
	Filename	: draft-ietf-mmusic-sip-07.txt,.ps
	Pages		: 121
	Date		: 17-Jul-98
	
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
which allow participants to agree on a set of compatible media types.
It 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.

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