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Description / Abstract:
The present document provides the protocol details for the
messaging service within the IP Multimedia Subsystem (IMS) based on
the Session Initiation Protocol (SIP), the Session Description
Protocol (SDP) and, the Message Session Relay Protocol (MSRP). The
document covers immediate messaging; session based messaging and
session-based messaging conferences.
Where possible the present document specifies the requirements
for this protocol by reference to specifications produced by the
IETF within the scope of SIP, SDP and, MSRP, either directly, or as
modified by 3GPP2 X.S0013-004.
The present document is applicable to Application Servers (ASs),
Media Resource Function Controllers (MRFCs), Media Resource
Function Processors (MRFPs) and to User Equipment (UE) providing
messaging capabilities.
This document does not cover the signalling between a MRFC and a
MRFP.