TR 29.847
Conferencing based on SIP, SDP, and other protocols;
Functional models, information flows and protocol details
V6.0.0 (Wzip)
2004/06 208 p.
- Rapporteur:
- Mr. Mayer, Georg
HuaWei Technologies Co., Ltd
full Table of Contents for TR 29.847 Word version: 6.0.0
1 Scope p. 10
The present document is a temporary container for the functional models, flows and protocol details for the conferencing service within the IP Multimedia Core Network subsystem (IMS) based on the Session Initiation Protocol (SIP), SIP Events, the Session Description Protocol (SDP) , the Conference Policy Control Protocol (CPCP) and other protocols. The document covers also instant messaging conferences. The contents of this report when stable will be moved into the Technical Specification TS 23.218, TS 24.228 and TS 24.229.
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 other protocols. 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 includes information applicable to network operators, service providers and manufacturers.
2 References p. 10
3 Definitions, symbols and abbreviations p. 12
3.1 Definitions p. 12
3.2 Abbreviations p. 13
4 Conference service overview p. 14
5 Protocol using SIP and SIP events for conferencing p. 14
5.1 Introduction p. 14
5.2 Functional entities p. 14
5.2.1 User Equipment (UE) p. 14
5.2.2 Media Resource Function Controller (MRFC) p. 15
5.2.3 Conferencing Application Server (Conferencing AS) p. 15
5.2.4 Media Gateway Control Function (MGCF) p. 15
5.3 Role p. 15
5.3.1 Conference Participant p. 15
5.3.1.1 General p. 15
5.3.1.2 Tightly coupled conferences p. 15
5.3.1.3 Conference creation p. 15
5.3.1.3.1 General p. 15
5.3.1.3.2 Conference creation with a conference factory URI p. 15
5.3.1.3.3 Three-way session creation p. 16
5.3.1.4 Joining a conference p. 16
5.3.1.4.1 User joining a conference by using a conference URI p. 16
5.3.1.4.2 User joining a conference after receipt of a REFER request p. 17
5.3.1.5 Inviting other users to a conference p. 17
5.3.1.5.1 General p. 17
5.3.1.5.2 User invites other user to a conference by sending a REFER request to the other user p. 17
5.3.1.5.3 User invites other user to a conference by sending a REFER request to the conference focus p. 18
5.3.1.6 Leaving a conference p. 18
5.3.2 Conference focus p. 19
5.3.2.1 General p. 19
5.3.2.2 Generic procedures for all conference related methods at the conference focus p. 20
5.3.2.3 Conference creation p. 20
5.3.2.3.1 Conference creation with a conference factory URI p. 20
5.3.2.3.2 Conference creation with a conference URI p. 21
5.3.2.3.3 Abnormal cases p. 21
5.3.2.4 User joining a conference p. 21
5.3.2.5 Invitation of users to a conference p. 22
5.3.2.5.1 General p. 22
5.3.2.5.2 Request from a user to invite another user to a conference p. 22
5.3.2.5.3 Inviting a user to a conference by sending an INVITE request p. 23
5.3.2.5.4 Inviting a user to a conference by sending a REFER request p. 23
5.3.2.5.5 Abnormal cases p. 23
5.3.2.6 Leaving a conference p. 23
5.3.3 Conference notification service p. 25
6 Protocol using SDP for conferencing p. 25
6.1 Introduction p. 25
6.2 Functional entities p. 25
6.2.1 User Equipment (UE) p. 25
6.2.2 Media Resource Function Controller (MRFC) p. 25
6.2.3 Conferencing Application Server (Conferencing AS) p. 26
6.2.4 Media Gateway Control Function (MGCF) p. 26
6.3 Role p. 26
6.3.1 Conference participant p. 26
6.3.2 Conference Focus p. 26
7 Protocol for conference policy control at the Ut reference point p. 27
7.1 Introduction p. 27
7.2 Functional entities p. 27
7.2.1 User Equipment (UE) p. 27
7.2.2 Media Resource Function Controller (MRFC) p. 27
7.2.3 Conferencing Application Server (Conferencing AS) p. 27
7.3 Role p. 27
7.3.1 Privileged user p. 27
7.3.2 Conference Policy Server (CPS) p. 28
7.3.2.1 Introduction p. 28
7.3.2.2 Conference creation7.3.2.2.1 General p. 28
7.3.2.2.2 Conference policy creation by means of CPCP p. 28
7.3.2.2.3 Automatic conference policy creation p. 28
7.3.2.3 Privilege Control List (PCL) modification p. 29
7.3.2.4 Allowing a user to join the conference p. 29
7.3.2.5 Adding a user to the conference p. 29
7.3.2.7 Expelling conference participant from the conference p. 30
8 Protocol for floor control for conferencing at the Ut reference point p. 30
9 Identified material for 3GPP documents other than 3GPP TS 24.147 p. 31
A Example signalling flows of conferencing operation p. 33
A.1 Scope of signalling flows p. 33
A.2 Introduction p. 33
A.2.1 General p. 33
A.2.2 Key required to interpret signalling flows p. 33
A.2.3 Overview of signalling flows related to PSI routeing p. 33
A.3 Flows demonstrating the creation of a conference p. 34
A.3.1 Introduction p. 34
A.3.2 User automatically creating a conference with a conference factory URI p. 34
A.3.3 User automatically creating a conference with a conference URI p. 80
A.3.4 User creating a conference by manually dialling p. 80
A.3.5 User creating a conference from two existing connections (Three-way session), users in different networks p. 81
A.3.6 Conference creation with CPCP p. 81
A.4 Flows demonstrating a user joining a conference p. 83
A.4.1 Introduction p. 83
A.4.2 User calling into a conference p. 83
A.4.3 User getting invited to a conference p. 135
A.4.4 User requesting IMS to join another user p. 183
A.4.5 User joins a private conversation to a conference p. 190
A.4.6 Adding a user to a conference with CPCP p. 190
A.4.6.1 Adding a user to the access control list with CPCP p. 190
A.4.6.2 Adding a user to the dial-out list with CPCP p. 191
A.4.7 Inviting a user to a conference with CPCP p. 192
A.5 Flows demonstrating a user subscribing to the conference event package p. 192
A.6 Flows demonstrating a user leaving a conference p. 198
A.6.1 Introduction p. 198
A.6.2 User leaving the conference p. 198
A.6.3 User requesting to remove another user from conference p. 208
A.6.4 MRFC/AS drops a user from a conference p. 208
A.6.5 Expelling a conference participant from a conference with CPCP p. 211
A.7 Flows demonstrating conference termination p. 212
A.7.1 General p. 212
A.7.2 Conference termination with CPCP p. 212
A.8 Flows demonstrating usage of hold and resume during conferences p. 213
B Bibliography p. 213
$ Change history p. 215
