Sentinel VoLTE Architecture - Metaswitch · PDF file Sentinel VoLTE Architecture (V2.6.0)Contents 1 Sentinel VoLTE Architecture.....7

Sentinel VoLTE Architecture

TAS-022-Issue 2.6.0-Release 1

August 2018

Sentinel VoLTE Architecture (V2.6.0)

Notices

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referenced herein are the trademarks or registered trademarks of their respective holders.

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Sentinel VoLTE Architecture (V2.6.0)

Contents

1 Sentinel VoLTE Architecture...................................................................................... 7

1.1 Intended audience....................................................................................................................... 7

1.2 Contents.......................................................................................................................................7

2 Overview.......................................................................................................................8

3 Product Overview........................................................................................................ 9

3.1 Open and fully-featured............................................................................................................... 9

3.2 MMTEL-AS and SCC-AS on the Rhino TAS............................................................................... 9

4 MMTel Services..........................................................................................................11

5 GSMA MMTel Supplementary Services................................................................... 12

5.1 Originating Identification Presentation/Restriction (OIP/OIR) (3GPP TS 24.607)......................12

5.2 Terminating Identification Presentation/Restriction (TIP/TIR) (3GPP TS 24.608)..................... 12

5.3 Communication Diversion (CDIV) (3GPP TS 24.604)................................................................13

5.4 Communication Hold (HOLD) (3GPP TS 24.610)......................................................................13

5.5 Communication Barring (CB) (3GPP 24.611)............................................................................ 13

5.6 Operator Determined Barring (ODB) (3GPP TS 24.315 and TS 24.041).................................. 14

5.7 Explicit Call Transfer (ECT) (3GPP TS24.629)..........................................................................17

5.8 Communication Waiting (CW) (3GPP TS24.615)...................................................................... 17

5.9 Ad-hoc multi-party conference (CONF) (3GPP 24.605)............................................................ 17

5.10 Anonymous Call Rejection (ACR) (3GPP TS24.611).............................................................. 18

5.10.1 XCAP interface (Ut)....................................................................................................18

6 Explicit Communication Transfer............................................................................ 19

6.1 Communication Transfer Modes................................................................................................19

6.2 Example Explicit Communication Transfer Call Flows...............................................................19

6.2.1 Blind ECT..................................................................................................................... 20

6.2.2 Consultive ECT............................................................................................................ 21

6.3 Instance models inside VoLTE.................................................................................................. 21

6.4 Charging.................................................................................................................................... 24

6.4.1 Out of Scope................................................................................................................ 24

7 Flexible Alerting.........................................................................................................25

7.1 What is Flexible Alerting............................................................................................................ 25

7.2 Group Members......................................................................................................................... 25

7.3 Alerting type............................................................................................................................... 25

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Sentinel VoLTE Architecture (V2.6.0)

7.4 Flexible Alerting Features.......................................................................................................... 26

7.5 Flexible Alerting Mode Examples Call Flow...............................................................................26

7.5.1 Parallel Alerting for group type of multiple-users......................................................... 26

7.5.2 Parallel Alerting for group type of single-user.............................................................. 27

7.5.3 Sequential Alerting for group of type multiple-users.................................................... 28

7.5.4 Sequential Alerting for group type of single-user......................................................... 29

8 Session Transfer to Own Device..............................................................................31

8.1 Service description.....................................................................................................................31

8.2 Pre requisites............................................................................................................................. 31

8.3 Basic flow...................................................................................................................................31

8.4 Features.....................................................................................................................................32

9 Charging..................................................................................................................... 34

9.1 Multiple OCS support.................................................................................................................34

9.2 Re-authorization.........................................................................................................................35

9.3 CDR generation......................................................................................................................... 35

9.4 Use of a Prepaid SCP via CAP..................................................................................................35

10 SCC-AS Services..................................................................................................... 36

10.1 IMS Centralised Services (ICS) support.................................................................................. 36

10.2 Terminating Access Domain Selection (T-ADS)...................................................................... 37

10.2.1 Computing the Circuit Switched Routing Number......................................................38

10.2.2 The OC-Terminating-Domain Header........................................................................ 38

10.2.3 Extensibility................................................................................................................ 38

10.3 Service Continuity and Access Transfer.................................................................................. 39

11 Architecture Overview.............................................................................................42

11.1 Major components................................................................................................................... 42

11.1.1 JSLEE services.......................................................................................................... 43

11.2 Sentinel VoLTE in an LTE network.......................................................................................... 43

11.3 B2BUA architecture................................................................................................................. 43

11.3.1 iFC Triggering Chaining and the SCC and MMTEL................................................... 44

11.3.2 Co-location using the Rhino SIS................................................................................ 44

11.4 Subscriber Data Storage..........................................................................................................45

11.5 Supplementary services database...........................................................................................45

11.6 Media resource function.................................