ETSI TS 124 147-2008 数字蜂窝通信系统(第2+阶段).全球移动通信系统(UMTS).使用IP多媒体(IM)核心网(CN)子系统的会议.第3阶段(版本7.9.0).3GPP TS 24.147(版本7.9.0,第7次发布)
Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Conferencing using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3 V7.9.0; 3GPP TS 24.147 version 7.9.0 Release 7
The present document provides the protocol details for conferencing within the IP Multimedia Core Network subsystem
(IMS) based on the Session Initiation Protocol (SIP), SIP Events, the Session Description Protocol (SDP) and the
Binary Floor Control Protocol (BFCP).
The functionalities for conference policy control (with respective standardised protocols) are felt to be essential for a
complete IMS conferencing service but are not specified in this version of IMS conferencing and are for further study.
The present document does not cover the signalling between a MRFC and a MRFP.
Where possible, the present document specifies the requirements for this protocol by reference to specifications
produced by the IETF within the scope of SIP, SIP Events, SDP and BFCP, either directly, or as modified by 3GPP
TS 24.229. Where this is not possible, extensions to SIP are defined within the present document. The document has
therefore been structured in order to allow both forms of specification.
The present document is applicable to Application Servers (ASs), Multimedia Resource Function Controllers (MRFCs),
Multimedia Resource Function Processors (MRFP), Media Gateway Control Functions (MGCFs) and to User
Equipment (UE) providing conferencing capabilities.