TS 23.018 ★
Basic Call Handling

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V16.0.0 (PDF) 2020/06 303 p.

V15.0.0 2018/06 299 p.

V14.0.0 2017/03 303 p.

V13.0.0 2015/12 302 p.

V12.2.0 2013/09 302 p.

V11.4.0 2013/03 300 p.

V10.4.0 2013/03 298 p.

V9.4.0 2011/12 289 p.

V8.5.0 2011/12 286 p.

V7.7.0 2008/09 283 p.

V6.6.0 2006/10 267 p.

V5.10.0 2006/10 265 p.

V4.7.0 2003/04 257 p.

V3.12.0 2003/04 238 p.

GSM Rel-98 v7.5.0 2003/12 192 p.

GSM Rel-97 v6.8.0 2003/12 187 p.

GSM Rel-96 v5.6.0 1998/09 169 p.

Rapporteur:: Mr. Landais, Bruno Alcatel-Lucent

essential Table of Contents for TS 23.018 Word version: 16.0.0

each title, in the ┃ or ┃ area, links to the equivalent title in the CONTENT

2 References Word‑p. 8

3 Definitions and abbreviations Word‑p. 10

4 Architecture |R5| Word‑p. 11

4.1 Architecture for an MO call Word‑p. 11

4.2 Architecture for an MT call Word‑p. 12

4.3 Architecture for a TO call |R7| Word‑p. 13

5 Information flows Word‑p. 14

5.1 Information flow for an MO call Word‑p. 14

5.2 Information flow for retrieval of routeing information for an MT call Word‑p. 17

5.3 Information flow for an MT call Word‑p. 31

6 Principles for interactions with supplementary services Word‑p. 33

6.1 Call Deflection service (3GPP TS 23.072) Word‑p. 34

6.2 Line identification services (3GPP TS 23.081) Word‑p. 34

6.3 Call forwarding services (3GPP TS 23.082) Word‑p. 34

6.4 Call wait (3GPP TS 23.083) Word‑p. 35

6.5 Call hold (3GPP TS 23.083) Word‑p. 35

6.6 Multiparty (3GPP TS 23.084) Word‑p. 35

6.7 Closed user group (3GPP TS 23.085) Word‑p. 35

6.8 Advice of charge (3GPP TS 23.086) Word‑p. 35

6.9 User-to-user signalling (3GPP TS 23.087) Word‑p. 35

6.10 Call barring (3GPP TS 23.088) Word‑p. 35

6.11 Explicit Call Transfer (3GPP TS 23.091) Word‑p. 36

6.12 Completion of Calls to Busy Subscriber (3GPP TS 23.093) Word‑p. 36

6.13 Multicall (3GPP TS 23.135) Word‑p. 36

7 Functional requirements of network entities Word‑p. 36

7.1 MO call Word‑p. 37

7.1.1 Functional requirements of serving MSC Word‑p. 37

7.1.2 Functional requirements of VLR Word‑p. 67

7.2 Retrieval of routeing information for MT call Word‑p. 95

7.2.1 Functional requirements of GMSC Word‑p. 95

7.2.2 Functional requirements of HLR Word‑p. 127

7.2.3 Functional requirements of VLR Word‑p. 148

7.2.4 Functional requirements of MSC Word‑p. 167

7.3 MT call Word‑p. 176

7.3.1 Functional requirements of serving MSC Word‑p. 176

7.3.2 Functional requirements of VLR Word‑p. 224

7.4 Subs_FSM |R4| Word‑p. 240

7.5 TO call |R7| Word‑p. 263

8 Contents of messages Word‑p. 271

8.1 Messages on the B interface (MSC-VLR) Word‑p. 272

8.2 Messages on the C interface (MSC-HLR) Word‑p. 284

8.3 Messages on the D interface (VLR-HLR) Word‑p. 287

8.4 Messages on the F interface (MSC-EIR) Word‑p. 292

8.5 Messages on the MSC internal interface Word‑p. 293

8.6 Messages on the VLR internal interface Word‑p. 293

8.7 Messages on the Gs interface Word‑p. 294

8.8 Messages on the E interface (GMSC-VMSC) |R6| Word‑p. 295

A Handling of an IAM at an MSC Word‑p. 296

$ Change history Word‑p. 298

TS 23.018 ★ Basic Call Handling

essential Table of Contents for TS 23.018 Word version: 16.0.0

TS 23.018 ★
Basic Call Handling