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I-D ACTION:draft-ietf-sip-rfc2543bis-03.txt,.ps



A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session Initiation Protocol Working Group of the IETF.

	Title		: SIP: Session Initiation Protocol
	Author(s)	: M. Handley, H. Schulzrinne, E. Schooler, J. Rosenberg
	Filename	: draft-ietf-sip-rfc2543bis-03.txt,.ps
	Pages		: 190
	Date		: 29-May-01
	
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.
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.

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