TS 23.079 ★
Support of Optimal Routeing (SOR)

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V16.0.0 (PDF) 2020/06 44 p.

V15.0.0 2018/06 41 p.

V14.0.0 2017/03 44 p.

V13.0.0 2015/12 44 p.

V12.0.0 2014/09 44 p.

V11.0.0 2012/09 44 p.

V10.0.0 2011/04 44 p.

V9.0.0 2009/12 44 p.

V8.0.0 2008/12 44 p.

V7.0.0 2007/06 44 p.

V6.1.0 2005/12 44 p.

V5.6.0 2005/12 44 p.

V4.2.0 2003/01 41 p.

V3.8.0 2003/01 41 p.

GSM Rel-98 v7.3.0 2000/03 41 p.

GSM Rel-97 v6.3.0 2000/03 39 p.

GSM Rel-96 v5.5.0 1999/10 40 p.

Rapporteur:: Mr. Wild, Peter A. Vodafone GmbH

essential Table of Contents for TS 23.079 Word version: 16.0.0

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

2 References Word‑p. 5

3 Definitions and abbreviations Word‑p. 6

4 Architecture Word‑p. 7

4.1 Optimal routeing for basic mobile-to-mobile calls Word‑p. 7

4.2 Optimal routeing for conditional call forwarding Word‑p. 9

5 Optimal routeing for basic mobile-to-mobile calls: message flows Word‑p. 10

5.1 Successful outcome Word‑p. 11

5.2 Unsuccessful outcome Word‑p. 12

5.2.1 B subscriber address not recognised as belonging to a UMTS or GSM PLMN Word‑p. 12

5.2.2 HLRB or VLRB does not support optimal routeing Word‑p. 12

5.2.3 OR charging requirements contravened Word‑p. 12

6 Optimal routeing for conditional call forwarding: message flows Word‑p. 13

6.1 Early call forwarding Word‑p. 13

6.1.1 Forwarding without interrogation of VLRB Word‑p. 13

6.1.2 Forwarding after interrogation of VLRB Word‑p. 14

6.2 Late call forwarding Word‑p. 16

6.2.1 Successful outcome Word‑p. 17

6.2.2 Unsuccessful outcome Word‑p. 17

7 Interactions between optimal routeing and supplementary services Word‑p. 18

7.1 Call forwarding Word‑p. 18

7.2 Closed User Group (CUG) Word‑p. 18

7.3 Advice of Charge Word‑p. 18

7.4 Call barring Word‑p. 18

7.5 Other supplementary services Word‑p. 19

8 Interactions between optimal routeing and other network features Word‑p. 19

8.1 Operator determined barring Word‑p. 19

8.2 CAMEL Word‑p. 19

9 Functional requirements of entities performing optimal routeing Word‑p. 20

9.1 Charging requirements for optimal routeing Word‑p. 20

9.2 Functional behaviour of VMSCA Word‑p. 21

9.3 Functional behaviour of VLRA Word‑p. 21

9.4 Functional behaviour of GMSC Word‑p. 21

9.5 Functional behaviour of HLR Word‑p. 28

9.6 Functional behaviour of VLRB Word‑p. 33

9.7 Functional behaviour of VMSCB Word‑p. 33

10 Contents of messages Word‑p. 34

10.1 Messages on the B interface (MSC-VLR) Word‑p. 35

10.2 Messages on the C interface (MSC-HLR) Word‑p. 36

10.3 Messages on the D interface (VLR-HLR) Word‑p. 37

10.4 Messages on the E interface (MSC-MSC) Word‑p. 38

A Handling of an IAM at an MSC Word‑p. 40

$ Change history Word‑p. 41

TS 23.079 ★ Support of Optimal Routeing (SOR)

essential Table of Contents for TS 23.079 Word version: 16.0.0

TS 23.079 ★
Support of Optimal Routeing (SOR)