TS 23.218 ★
IP Multimedia (IM) Session Handling –
IM Call Model

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V16.0.0 (PDF) 2020/06 76 p.

V15.0.0 2018/06 74 p.

V14.0.0 2017/03 76 p.

V13.0.0 2015/03 74 p.

V12.3.0 2013/09 75 p.

V11.6.0 2013/06 75 p.

V10.0.0 2011/03 68 p.

V9.2.0 2010/06 68 p.

V8.6.0 2010/03 68 p.

V7.10.0 2009/12 62 p.

V6.4.0 2006/06 59 p.

V5.9.0 2006/06 59 p.

Rapporteur:: Mr. Leis, Peter Nokia Networks

essential Table of Contents for TS 23.218 Word version: 16.0.0

each title, in the "available" or "not available yet" area, links to the equivalent title in the CONTENT

2 References Word‑p. 7

3 Definitions and abbreviations Word‑p. 8

4 Architecture and information flows for IM multimedia session Word‑p. 11

4.0 Introduction |R7| Word‑p. 11

4.1 Architecture for a UE-originating IP multimedia session Word‑p. 11

4.2 Architecture for a UE-terminating IP multimedia session Word‑p. 11

4.3 Void

4.4 Void

4.5 Void

5 Functional requirements of network entities Word‑p. 12

5.1 Architecture for service provision for IP multimedia subsystem Word‑p. 12

5.1A IMS communication service identifier (ICSI) |R7| Word‑p. 15

5.1B IMS Application Reference Identifier (IARI) |R7| Word‑p. 16

5.2 Service interaction with IP multimedia subsystem Word‑p. 16

6 Functional requirements of serving CSCF and Transit Function Word‑p. 20

6.1 Modes of operation of the S-CSCF and Transit Function Word‑p. 20

6.2 Interfaces defined for S-CSCF and Transit Function Word‑p. 22

6.3 S-CSCF handling of SIP registration Word‑p. 22

6.4 S-CSCF handling of UE-originating requests Word‑p. 23

6.5 S-CSCF handling of UE-terminating requests Word‑p. 25

6.5A Transit Function handling of requests |R11| Word‑p. 27

6.6 S-CSCF and Transit Function handling of IP multimedia session release requests Word‑p. 28

6.7 S-CSCF handling of subscription and notification Word‑p. 29

6.8 S-CSCF handling IMS charging Word‑p. 29

6.8A Transit Function handling IMS charging |R11| Word‑p. 30

6.9 S-CSCF description of subscriber data Word‑p. 31

7 Functional requirements of HSS Word‑p. 32

7.1 Subscriber data related storage requirements for HSS Word‑p. 32

7.2 Interfaces defined for HSS Word‑p. 32

7.3 Procedures during IP multimedia registration Word‑p. 33

7.4 Procedures during IP multimedia sessions Word‑p. 33

8 Functional requirements of the MRFC Word‑p. 33

8.1 Functionality of the MRFC Word‑p. 33

8.2 Interfaces defined for MRFC Word‑p. 35

9 Generic IP multimedia session handling for SIP Application Servers Word‑p. 37

9.1 Architecture Word‑p. 37

9.2 Interfaces defined for a SIP Application Server Word‑p. 41

9.3 Description of Application Server related subscriber data Word‑p. 42

9.4 Procedures for multimedia session handling with a SIP based Application Server Word‑p. 42

10 IP multimedia session handling with IM-SSF Application Server Word‑p. 45

11 IP multimedia session handling with an OSA-Service Capability Server Word‑p. 45

12 IP multimedia session handling with an Charging Server Word‑p. 45

13 Media resource broker (MRB) |R8| Word‑p. 46

A Scalability and deployment considerations for IP multimedia service provision Word‑p. 49

B Information flows for example services Word‑p. 51

B.1 Call forwarding example Word‑p. 51

B.2 Announcement, conferencing and transcoding examples using MRFC Word‑p. 56

B.3 Example information flows for a voicemail service Word‑p. 64

C Example for Initial filter criteria triggering Word‑p. 69

$ Change history Word‑p. 71

TS 23.218 ★ IP Multimedia (IM) Session Handling – IM Call Model

essential Table of Contents for TS 23.218 Word version: 16.0.0

TS 23.218 ★
IP Multimedia (IM) Session Handling –
IM Call Model