SIST EN 300 392-3-12 V1.2.1:2020

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 12: Transport layer independent Additional Network Feature Individual Call (ANF-ISIIC)

The present document defines the Terrestrial Trunked Radio (TETRA) system supporting Voice plus Data (V+D). It specifies:
• the interworking of individual calls between TETRA networks;
• the supplementary services interaction with individual calls between TETRA networks.
The TETRA V+D interworking - basic operation part defines the interworking between TETRA networks over the corresponding interface: the Inter-System Interface (ISI). It comprises the following sub-parts:
• Transport layer independent General design [2];
• General Design, PSS1 over E.1 [3];
• General Design, SIP/IP [4];
• Transport layer independent Additional Network Feature - ISI Individual Call (ANF-ISIIC) (the present document);
• Transport layer independent Additional Network Feature - ISI Group Call (ANF-ISIGC) [5];
• Transport layer independent Additional Network Feature - ISI Short Data service (ANF-ISISDS) [i.8];
• Transport layer independent Additional Network Feature - ISI Mobility Management (ANF-ISIMM) [6];
• Generic Speech Format Implementation [i.7].
The present document is the ANF-ISIIC sub-part. Like all other Additional Network Feature (ANF) specifications, those of ANF-ISIIC are produced in three stages, according to the method described in Recommendation ITU-T I.130 [i.4]. The present document contains the stage 1 and 2 descriptions of ANF-ISIIC, and stage 3 description. The stage 1 description specifies the ANF as seen by its users, which are essentially the individual call control entities in both TETRA networks. The stage 2 description identifies the functional entities involved in the ANF and the information flows between them. And the stage 3 description of ANF-ISIIC specifies its protocol. NOTE 1: According to Recommendation ITU-T I.130 [i.4], the stage 3 description of a bearer or tele-service addresses the network implementation aspects. Consequently, it comprises two steps: the specifications of all protocols at the various reference points involved in any of the service procedures (notably the service operation) are the first step of the stage 3 description, and the specifications of the functions of the corresponding network entities are its second step. NOTE 2: The SDL diagrams have not been provided since they can be derived from the specification of the functional entity actions in the stage 2 description. The present document applies to TETRA networks which support inter-TETRA individual calls. More specifically, it applies to their Circuit Mode Control Entities (CMCE), as defined in clause 14.2 of ETSI EN 300 392-2 [1], and to their ANF-ISIIC entities defined in the stage 2 description. The relation between the ANF-ISIIC and the transport layer protocol is described in the General Design documents [2], [3] and [4].

Prizemni snopovni radio (TETRA) - Govor in podatki (V+D) - 3. del: Medsebojno delovanje na medsistemskem vmesniku (ISI) - 12. poddel: Neodvisnost transportnih plasti dodatne omrežne funkcije: posamezni klic (ANF-ISIIC)

General Information

• Status: Published
• Public Enquiry End Date: 12-Nov-2019
• Publication Date: 18-May-2020
• ICS: 33.070.10 - Terrestrial Trunked Radio (TETRA)
• ICS: 35.100.40 - Transport layer
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-May-2020
• Due Date: 23-Jul-2020
• Completion Date: 19-May-2020
• Ref Project: ETSI EN 300 392-3-12 V1.2.1 (2020-04) - Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 12: Transport layer independent Additional Network Feature Individual Call (ANF-ISIIC)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 300 392-3-12 V1.2.1:2020
01-julij-2020
Prizemni snopovni radio (TETRA) - Govor in podatki (V+D) - 3. del: Medsebojno
delovanje na medsistemskem vmesniku (ISI) - 12. poddel: Neodvisnost
transportnih plasti dodatne omrežne funkcije: posamezni klic (ANF-ISIIC)
Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the
Inter-System Interface (ISI) - Sub-part 12: Transport layer independent Additional
Network Feature Individual Call (ANF-ISIIC)
Ta slovenski standard je istoveten z: ETSI EN 300 392-3-12 V1.2.1 (2020-04)
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
35.100.40 Transportni sloj Transport layer
SIST EN 300 392-3-12 V1.2.1:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 392-3-12 V1.2.1:2020

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SIST EN 300 392-3-12 V1.2.1:2020
ETSI EN 300 392-3-12 V1.2.1 (2020-04)






EUROPEAN STANDARD
Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI);
Sub-part 12: Transport layer independent
Additional Network Feature Individual Call (ANF-ISIIC)

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SIST EN 300 392-3-12 V1.2.1:2020

2 ETSI EN 300 392-3-12 V1.2.1 (2020-04)



Reference
REN/TCCE-03260
Keywords
ANF, interworking, TETRA, V+D

ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

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SIST EN 300 392-3-12 V1.2.1:2020

3 ETSI EN 300 392-3-12 V1.2.1 (2020-04)
Contents
Intellectual Property Rights . 8
Foreword . 8
Modal verbs terminology . 10
1 Scope . 11
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 13
3 Definition of terms, symbols and abbreviations . 13
3.1 Terms . 13
3.2 Symbols . 14
3.3 Abbreviations . 14
4 ANF-ISIIC stage 1 specification . 16
4.1 Description . 16
4.1.1 General description . 16
4.1.2 Qualifications on applicability to telecommunication services . 16
4.2 Procedures . 16
4.2.1 Provision/withdrawal . 16
4.2.2 Normal procedures . 16
4.2.2.1 Activation/deactivation/registration/interrogation . 16
4.2.2.2 Invocation and operation . 17
4.2.2.2.1 General . 17
4.2.2.2.2 Call routeing . 17
4.2.2.2.3 Control of call time-out timers . 17
4.2.2.2.4 Transmission control . 17
4.2.2.2.5 Setup modification. 17
4.2.2.2.6 Call modification . 18
4.2.2.2.7 Call restoration after migration . 18
4.2.2.2.8 Call clearing . 18
4.2.2.2.9 Interaction between ANF-ISIICs . 19
4.2.2.2.10 Resource queuing and allocation policies . 19
4.2.3 Exceptional procedures . 19
4.2.3.1 Activation/deactivation/registration/interrogation . 19
4.2.3.2 Invocation and operation . 19
4.3 Interactions with other TETRA supplementary services and ANFs . 20
4.3.1 Introduction. 20
4.3.2 Calling Line Identification Presentation (SS-CLIP) . 20
4.3.3 Connected Line identification Presentation (SS-COLP) . 20
4.3.4 Calling/connected Line Identification Restriction (SS-CLIR) . 20
4.3.5 Call Report (SS-CR) . 20
4.3.6 Talking Party Identification (SS-TPI) . 20
4.3.7 Call Forwarding Unconditional (SS-CFU) . 20
4.3.8 Call Forwarding on Busy (SS-CFB) . 22
4.3.9 Call Forwarding on No Reply (SS-CFNRy) . 23
4.3.10 Call Forwarding on Not Reachable (SS-CFNRc) . 24
4.3.11 List Search Call (SS-LSC) . 24
4.3.12 Call Authorized by Dispatcher (SS-CAD) . 24
4.3.13 Short Number Addressing (SS-SNA) . 25
4.3.14 Area Selection (SS-AS) . 25
4.3.15 Access Priority (SS-AP) . 25
4.3.16 Priority Call (SS-PC) . 26
4.3.17 Call Waiting (SS-CW) . 26
4.3.18 Call Hold (SS-HOLD) . 26
4.3.19 Call Completion to Busy Subscriber (SS-CCBS) . 26
4.3.20 Late Entry (SS-LE) . 26
ETSI

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SIST EN 300 392-3-12 V1.2.1:2020

4 ETSI EN 300 392-3-12 V1.2.1 (2020-04)
4.3.21 Pre-emptive Priority Call (SS-PPC) . 26
4.3.22 Include Call (SS-IC) . 26
4.3.23 Barring of Outgoing Calls (SS-BOC) . 27
4.3.24 Barring of Incoming Calls (SS-BIC) . 27
4.3.25 Discreet Listening (SS-DL) . 27
4.3.26 Ambience Listening (SS-AL) . 28
4.3.27 Dynamic Group Number Assignment (SS-DGNA) . 28
4.3.28 Call Completion on No Reply (SS-CCNR) . 28
4.3.29 Call Retention (SS-CRT) . 28
4.3.30 Additional Network Feature - Inter System Interface Group Call (ANF-ISIGC) . 28
4.3.31 Additional Network Feature - Inter System Interface Short Data Service (ANF-ISISDS) . 28
4.3.32 Additional Network Feature - Inter System Interface Mobility Management (ANF-ISIMM) . 28
4.3.33 Additional Network Feature - Inter System Interface Supplementary service (ANF-ISISS) . 29
4.4 Interworking considerations . 29
5 ANF-ISIIC stage 2 specification . 29
5.1 Functional model . 29
5.1.1 Functional model description . 29
5.1.2 Description of functional entities . 34
5.1.2.1 Originating/Controlling SwMI individual call control application functional entity, FE1 . 34
5.1.2.2 Originating/Controlling SwMI ISI individual call originating functional entity, FE2 . 34
5.1.2.3 Called/Forward Switching SwMI call control functional entity, FE3 . 35
5.1.2.4 Called/Forward Switching SwMI ISI individual call functional entity, FE4 . 36
5.1.2.5 Terminating SwMI individual call control functional entity, FE5 . 36
5.1.2.6 ISI individual call terminating functional entity, FE6 . 37
5.1.2.7 New terminating SwMI call restoring functional entity, FE7 . 37
5.1.2.8 New terminating SwMI ISI call restoring functional entity (ANF-ISIIC), FE8 . 37
5.2 Information flow . 38
5.2.1 Examples of information flow sequences . 38
5.2.1.1 Introduction . 38
5.2.1.2 Successful call set-up when the called user is registered in SwMI B and uses on/off hook
signalling . 38
5.2.1.3 Successful call set up when the called user is registered in SwMI B and uses direct set-up
signalling . 39
5.2.1.4 ANF-ISIIC set-up to a called user having migrated from SwMI B, using forward switching . 41
5.2.1.5 ANF-ISIIC set-up to a called user having migrated from SwMI B, using re-routeing . 41
5.2.1.6 Loop avoidance in case of intra-TETRA call . 42
5.2.1.7 Unsuccessful ANF-ISIIC call set-up . 43
5.2.1.8 Transmission control . 44
5.2.1.9 Call modify . 47
5.2.1.10 Call restoration after migration . 47
5.2.1.11 Call clearing . 50
5.2.1.12 Resource queuing and allocation . 51
5.2.2 Definition of information flows . 52
5.2.2.1 General . 52
5.2.2.2 CALL RESTORE . 52
5.2.2.3 CALL RESTORE PREPARE . 53
5.2.2.4 CHARACTERISTIC CHANGE . 54
5.2.2.5 COMPLETE. 54
5.2.2.6 MIGRATION . 54
5.2.2.7 MODIFY . 55
5.2.2.8 RELEASE . 55
5.2.2.9 SETUP . 56
5.2.2.10 SETUP PROLONGATION . 57
5.2.2.11 TROMBONE . 57
5.2.2.12 TX-CEASED . 58
5.2.2.12.1 TX-CEASED 1 . 58
5.2.2.12.2 TX-CEASED 2 . 58
5.2.2.13 TX-CONTINUE 1 . 58
5.2.2.14 TX-CONTINUE 2 . 59
5.2.2.15 TX-DEMAND . 59
5.2.2.16 TX-GRANTED . 59
ETSI

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SIST EN 300 392-3-12 V1.2.1:2020

5 ETSI EN 300 392-3-12 V1.2.1 (2020-04)
5.2.2.17 TX-INTERRUPT . 60
5.2.2.18 TX-WAIT. 60
5.3 Functional entity actions . 60
5.4 Allocation of functional entities to physical equipment/SwMIs. 60
6 ANF-ISIIC stage 3 specification . 63
6.1 ANF-ISIIC coding requirements . 63
6.1.1 General . 63
6.1.2 TETRA PDUs . 63
6.1.2.1 General encoding rule . 63
6.1.2.2 ISI-SETUP PDU message sent by the originating or the forward switching SwMI . 63
6.1.2.3 ISI-PROGRESS PDU used to give information about the call progress . 65
6.1.2.4 ISI-REDIRECT PDU sent by the called SwMI when it is not the terminating SwMI because of
migration or SS-CF invocation . 65
6.1.2.5 ISI-FORWARD SWITCH PDU sent by the originating or the forward switching SwMI to
request forward switching . 67
6.1.2.6 ISI-ALERTING PDU sent by by the terminating or the forward switching SwMI to give
information about the connected party alerted . 67
6.1.2.7 ISI-CONNECT PDU sent by by the terminating or the forward switching SwMI to give
information that the connected party has answered the call . 67
6.1.2.8 ISI-CALL PROCEEDING sent by the terminating SwMI before the ISI-ALERTING or ISI-
CONNECT message . 69
6.1.2.9 ISI-SETUP PROLONGATION PDU sent to prolong the call setup time . 69
6.1.2.10 ISI CONNECT ACKNOWLEDGE PDU sent by the originating SwMI . 69
6.1.2.11 Transmission control PDUs sent by the controlling SwMI . 70
6.1.2.12 ISI-TX WAIT PDU possibly sent by either the controlling or the terminating SwMI. 71
6.1.2.13 ISI-INFO DEMAND and ISI-INFO REPLY PDU possibly sent by either the originating or the
terminating SwMI . 71
6.1.2.14 Transmission control PDUs sent by the terminating SwMI . 72
6.1.2.15 TETRA PDUs to restore the call after the calling or the connected user has migrated in a new
S wMI . 73
6.1.2.15.1 Case where no connection between the old SwMI and the new SwMI already exists or has
not been identified . 73
6.1.2.15.2 Cases where no new connection is needed between the old SwMI and the new SwMI . 75
6.1.2.16 ISI-DISCONNECT PDU sent by a SwMI in case of call clearing or call rejection . 77
6.1.2.17 TETRA PDUs specific for interaction with supplementary service protocol sent to the
originating SwMI . 77
6.1.2.18 ISI-QUEUING PDUs sent towards the terminating SwMI . 78
6.1.2.19 ISI-RESOURCE PDU sent towards the Terminating SwMI . 79
6.1.2.20 ISI-RESOURCE RESPONSE PDUs sent towards the Called or Originating SwMI after the call
has connected . 79
6.1.3 TETRA PDU information element coding . 79
6.1.3.1 Introduction . 79
6.1.3.2 Specific ISI definition of some information elements already defined for air interface messages . 80
6.1.3.2.1 Basic service information . 80
6.1.3.2.2 Call status . 80
6.1.3.2.3 Call time-out, set-up phase . 80
6.1.3.2.4 Disconnect cause information element . 81
6.1.3.2.5 PDU type . 82
6.1.3.3 New information elements used at the ISI . 83
6.1.3.3.1 Call diverted to a dispatcher . 83
6.1.3.3.2 Call has been forward switched . 83
6.1.3.3.3 Call identified as fleet call . 83
6.1.3.3.4 Called/forwarded-to external subscriber number. 83
6.1.3.3.5 Called/forwarded-to party extension . 83
6.1.3.3.6 Called/forwarded-to party SSI . 83
6.1.3.3.7 Called/forwarded-to party fleet number SSI . 83
6.1.3.3.8 Called/forwarded-to user having migrated . 84
6.1.3.3.9 Calling external subscriber number . 84
6.1.3.3.10 Calling external subscriber number parameters . 84
6.1.3.3.11 Calling party fleet number SSI . 84
6.1.3.3.12 Calling party presentation indicator. 84
ETSI

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SIST EN 300 392-3-12 V1.2.1:2020

6 ETSI EN 300 392-3-12 V1.2.1 (2020-04)
6.1.3.3.13 Cause for PDU addressed to originating SwMI .
...

ETSI EN 300 392-3-12 V1.2.1 (2020-04)






EUROPEAN STANDARD
Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI);
Sub-part 12: Transport layer independent
Additional Network Feature Individual Call (ANF-ISIIC)

---------------------- Page: 1 ----------------------
2 ETSI EN 300 392-3-12 V1.2.1 (2020-04)



Reference
REN/TCCE-03260
Keywords
ANF, interworking, TETRA, V+D

ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI EN 300 392-3-12 V1.2.1 (2020-04)
Contents
Intellectual Property Rights . 8
Foreword . 8
Modal verbs terminology . 10
1 Scope . 11
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 13
3 Definition of terms, symbols and abbreviations . 13
3.1 Terms . 13
3.2 Symbols . 14
3.3 Abbreviations . 14
4 ANF-ISIIC stage 1 specification . 16
4.1 Description . 16
4.1.1 General description . 16
4.1.2 Qualifications on applicability to telecommunication services . 16
4.2 Procedures . 16
4.2.1 Provision/withdrawal . 16
4.2.2 Normal procedures . 16
4.2.2.1 Activation/deactivation/registration/interrogation . 16
4.2.2.2 Invocation and operation . 17
4.2.2.2.1 General . 17
4.2.2.2.2 Call routeing . 17
4.2.2.2.3 Control of call time-out timers . 17
4.2.2.2.4 Transmission control . 17
4.2.2.2.5 Setup modification. 17
4.2.2.2.6 Call modification . 18
4.2.2.2.7 Call restoration after migration . 18
4.2.2.2.8 Call clearing . 18
4.2.2.2.9 Interaction between ANF-ISIICs . 19
4.2.2.2.10 Resource queuing and allocation policies . 19
4.2.3 Exceptional procedures . 19
4.2.3.1 Activation/deactivation/registration/interrogation . 19
4.2.3.2 Invocation and operation . 19
4.3 Interactions with other TETRA supplementary services and ANFs . 20
4.3.1 Introduction. 20
4.3.2 Calling Line Identification Presentation (SS-CLIP) . 20
4.3.3 Connected Line identification Presentation (SS-COLP) . 20
4.3.4 Calling/connected Line Identification Restriction (SS-CLIR) . 20
4.3.5 Call Report (SS-CR) . 20
4.3.6 Talking Party Identification (SS-TPI) . 20
4.3.7 Call Forwarding Unconditional (SS-CFU) . 20
4.3.8 Call Forwarding on Busy (SS-CFB) . 22
4.3.9 Call Forwarding on No Reply (SS-CFNRy) . 23
4.3.10 Call Forwarding on Not Reachable (SS-CFNRc) . 24
4.3.11 List Search Call (SS-LSC) . 24
4.3.12 Call Authorized by Dispatcher (SS-CAD) . 24
4.3.13 Short Number Addressing (SS-SNA) . 25
4.3.14 Area Selection (SS-AS) . 25
4.3.15 Access Priority (SS-AP) . 25
4.3.16 Priority Call (SS-PC) . 26
4.3.17 Call Waiting (SS-CW) . 26
4.3.18 Call Hold (SS-HOLD) . 26
4.3.19 Call Completion to Busy Subscriber (SS-CCBS) . 26
4.3.20 Late Entry (SS-LE) . 26
ETSI

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4 ETSI EN 300 392-3-12 V1.2.1 (2020-04)
4.3.21 Pre-emptive Priority Call (SS-PPC) . 26
4.3.22 Include Call (SS-IC) . 26
4.3.23 Barring of Outgoing Calls (SS-BOC) . 27
4.3.24 Barring of Incoming Calls (SS-BIC) . 27
4.3.25 Discreet Listening (SS-DL) . 27
4.3.26 Ambience Listening (SS-AL) . 28
4.3.27 Dynamic Group Number Assignment (SS-DGNA) . 28
4.3.28 Call Completion on No Reply (SS-CCNR) . 28
4.3.29 Call Retention (SS-CRT) . 28
4.3.30 Additional Network Feature - Inter System Interface Group Call (ANF-ISIGC) . 28
4.3.31 Additional Network Feature - Inter System Interface Short Data Service (ANF-ISISDS) . 28
4.3.32 Additional Network Feature - Inter System Interface Mobility Management (ANF-ISIMM) . 28
4.3.33 Additional Network Feature - Inter System Interface Supplementary service (ANF-ISISS) . 29
4.4 Interworking considerations . 29
5 ANF-ISIIC stage 2 specification . 29
5.1 Functional model . 29
5.1.1 Functional model description . 29
5.1.2 Description of functional entities . 34
5.1.2.1 Originating/Controlling SwMI individual call control application functional entity, FE1 . 34
5.1.2.2 Originating/Controlling SwMI ISI individual call originating functional entity, FE2 . 34
5.1.2.3 Called/Forward Switching SwMI call control functional entity, FE3 . 35
5.1.2.4 Called/Forward Switching SwMI ISI individual call functional entity, FE4 . 36
5.1.2.5 Terminating SwMI individual call control functional entity, FE5 . 36
5.1.2.6 ISI individual call terminating functional entity, FE6 . 37
5.1.2.7 New terminating SwMI call restoring functional entity, FE7 . 37
5.1.2.8 New terminating SwMI ISI call restoring functional entity (ANF-ISIIC), FE8 . 37
5.2 Information flow . 38
5.2.1 Examples of information flow sequences . 38
5.2.1.1 Introduction . 38
5.2.1.2 Successful call set-up when the called user is registered in SwMI B and uses on/off hook
signalling . 38
5.2.1.3 Successful call set up when the called user is registered in SwMI B and uses direct set-up
signalling . 39
5.2.1.4 ANF-ISIIC set-up to a called user having migrated from SwMI B, using forward switching . 41
5.2.1.5 ANF-ISIIC set-up to a called user having migrated from SwMI B, using re-routeing . 41
5.2.1.6 Loop avoidance in case of intra-TETRA call . 42
5.2.1.7 Unsuccessful ANF-ISIIC call set-up . 43
5.2.1.8 Transmission control . 44
5.2.1.9 Call modify . 47
5.2.1.10 Call restoration after migration . 47
5.2.1.11 Call clearing . 50
5.2.1.12 Resource queuing and allocation . 51
5.2.2 Definition of information flows . 52
5.2.2.1 General . 52
5.2.2.2 CALL RESTORE . 52
5.2.2.3 CALL RESTORE PREPARE . 53
5.2.2.4 CHARACTERISTIC CHANGE . 54
5.2.2.5 COMPLETE. 54
5.2.2.6 MIGRATION . 54
5.2.2.7 MODIFY . 55
5.2.2.8 RELEASE . 55
5.2.2.9 SETUP . 56
5.2.2.10 SETUP PROLONGATION . 57
5.2.2.11 TROMBONE . 57
5.2.2.12 TX-CEASED . 58
5.2.2.12.1 TX-CEASED 1 . 58
5.2.2.12.2 TX-CEASED 2 . 58
5.2.2.13 TX-CONTINUE 1 . 58
5.2.2.14 TX-CONTINUE 2 . 59
5.2.2.15 TX-DEMAND . 59
5.2.2.16 TX-GRANTED . 59
ETSI

---------------------- Page: 4 ----------------------
5 ETSI EN 300 392-3-12 V1.2.1 (2020-04)
5.2.2.17 TX-INTERRUPT . 60
5.2.2.18 TX-WAIT. 60
5.3 Functional entity actions . 60
5.4 Allocation of functional entities to physical equipment/SwMIs. 60
6 ANF-ISIIC stage 3 specification . 63
6.1 ANF-ISIIC coding requirements . 63
6.1.1 General . 63
6.1.2 TETRA PDUs . 63
6.1.2.1 General encoding rule . 63
6.1.2.2 ISI-SETUP PDU message sent by the originating or the forward switching SwMI . 63
6.1.2.3 ISI-PROGRESS PDU used to give information about the call progress . 65
6.1.2.4 ISI-REDIRECT PDU sent by the called SwMI when it is not the terminating SwMI because of
migration or SS-CF invocation . 65
6.1.2.5 ISI-FORWARD SWITCH PDU sent by the originating or the forward switching SwMI to
request forward switching . 67
6.1.2.6 ISI-ALERTING PDU sent by by the terminating or the forward switching SwMI to give
information about the connected party alerted . 67
6.1.2.7 ISI-CONNECT PDU sent by by the terminating or the forward switching SwMI to give
information that the connected party has answered the call . 67
6.1.2.8 ISI-CALL PROCEEDING sent by the terminating SwMI before the ISI-ALERTING or ISI-
CONNECT message . 69
6.1.2.9 ISI-SETUP PROLONGATION PDU sent to prolong the call setup time . 69
6.1.2.10 ISI CONNECT ACKNOWLEDGE PDU sent by the originating SwMI . 69
6.1.2.11 Transmission control PDUs sent by the controlling SwMI . 70
6.1.2.12 ISI-TX WAIT PDU possibly sent by either the controlling or the terminating SwMI. 71
6.1.2.13 ISI-INFO DEMAND and ISI-INFO REPLY PDU possibly sent by either the originating or the
terminating SwMI . 71
6.1.2.14 Transmission control PDUs sent by the terminating SwMI . 72
6.1.2.15 TETRA PDUs to restore the call after the calling or the connected user has migrated in a new
S wMI . 73
6.1.2.15.1 Case where no connection between the old SwMI and the new SwMI already exists or has
not been identified . 73
6.1.2.15.2 Cases where no new connection is needed between the old SwMI and the new SwMI . 75
6.1.2.16 ISI-DISCONNECT PDU sent by a SwMI in case of call clearing or call rejection . 77
6.1.2.17 TETRA PDUs specific for interaction with supplementary service protocol sent to the
originating SwMI . 77
6.1.2.18 ISI-QUEUING PDUs sent towards the terminating SwMI . 78
6.1.2.19 ISI-RESOURCE PDU sent towards the Terminating SwMI . 79
6.1.2.20 ISI-RESOURCE RESPONSE PDUs sent towards the Called or Originating SwMI after the call
has connected . 79
6.1.3 TETRA PDU information element coding . 79
6.1.3.1 Introduction . 79
6.1.3.2 Specific ISI definition of some information elements already defined for air interface messages . 80
6.1.3.2.1 Basic service information . 80
6.1.3.2.2 Call status . 80
6.1.3.2.3 Call time-out, set-up phase . 80
6.1.3.2.4 Disconnect cause information element . 81
6.1.3.2.5 PDU type . 82
6.1.3.3 New information elements used at the ISI . 83
6.1.3.3.1 Call diverted to a dispatcher . 83
6.1.3.3.2 Call has been forward switched . 83
6.1.3.3.3 Call identified as fleet call . 83
6.1.3.3.4 Called/forwarded-to external subscriber number. 83
6.1.3.3.5 Called/forwarded-to party extension . 83
6.1.3.3.6 Called/forwarded-to party SSI . 83
6.1.3.3.7 Called/forwarded-to party fleet number SSI . 83
6.1.3.3.8 Called/forwarded-to user having migrated . 84
6.1.3.3.9 Calling external subscriber number . 84
6.1.3.3.10 Calling external subscriber number parameters . 84
6.1.3.3.11 Calling party fleet number SSI . 84
6.1.3.3.12 Calling party presentation indicator. 84
ETSI

---------------------- Page: 5 ----------------------
6 ETSI EN 300 392-3-12 V1.2.1 (2020-04)
6.1.3.3.13 Cause for PDU addressed to originating SwMI . 84
6.1.3.3.14 Connected external subscriber number . 85
6.1.3.3.15 Connected external subscriber number parameters . 85
6.1.3.3.16 Connected party presentation indicator . 85
6.1.3.3.17 Connected party extension. 85
6.1.3.3.18 Connected party SSI . 85
6.1.3.3.19 Connected party fleet number SSI . 85
6.1.3.3.20 Controlling SwMI . 86
6.1.3.3.21 Incoming call barring status .
...

Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)






EUROPEAN STANDARD
Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI);
Sub-part 12: Transport layer independent
Additional Network Feature Individual Call (ANF-ISIIC)

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)



Reference
REN/TCCE-03260
Keywords
ANF, interworking, TETRA, V+D

ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)
Contents
Intellectual Property Rights . 8
Foreword . 8
Modal verbs terminology . 10
1 Scope . 11
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 13
3 Definition of terms, symbols and abbreviations . 13
3.1 Terms . 13
3.2 Symbols . 14
3.3 Abbreviations . 14
4 ANF-ISIIC stage 1 specification . 16
4.1 Description . 16
4.1.1 General description . 16
4.1.2 Qualifications on applicability to telecommunication services . 16
4.2 Procedures . 16
4.2.1 Provision/withdrawal . 16
4.2.2 Normal procedures . 16
4.2.2.1 Activation/deactivation/registration/interrogation . 16
4.2.2.2 Invocation and operation . 17
4.2.2.2.1 General . 17
4.2.2.2.2 Call routeing . 17
4.2.2.2.3 Control of call time-out timers . 17
4.2.2.2.4 Transmission control . 17
4.2.2.2.5 Setup modification. 17
4.2.2.2.6 Call modification . 18
4.2.2.2.7 Call restoration after migration . 18
4.2.2.2.8 Call clearing . 18
4.2.2.2.9 Interaction between ANF-ISIICs . 19
4.2.2.2.10 Resource queuing and allocation policies . 19
4.2.3 Exceptional procedures . 19
4.2.3.1 Activation/deactivation/registration/interrogation . 19
4.2.3.2 Invocation and operation . 19
4.3 Interactions with other TETRA supplementary services and ANFs . 20
4.3.1 Introduction. 20
4.3.2 Calling Line Identification Presentation (SS-CLIP) . 20
4.3.3 Connected Line identification Presentation (SS-COLP) . 20
4.3.4 Calling/connected Line Identification Restriction (SS-CLIR) . 20
4.3.5 Call Report (SS-CR) . 20
4.3.6 Talking Party Identification (SS-TPI) . 20
4.3.7 Call Forwarding Unconditional (SS-CFU) . 20
4.3.8 Call Forwarding on Busy (SS-CFB) . 22
4.3.9 Call Forwarding on No Reply (SS-CFNRy) . 23
4.3.10 Call Forwarding on Not Reachable (SS-CFNRc) . 24
4.3.11 List Search Call (SS-LSC) . 24
4.3.12 Call Authorized by Dispatcher (SS-CAD) . 24
4.3.13 Short Number Addressing (SS-SNA) . 25
4.3.14 Area Selection (SS-AS) . 25
4.3.15 Access Priority (SS-AP) . 25
4.3.16 Priority Call (SS-PC) . 26
4.3.17 Call Waiting (SS-CW) . 26
4.3.18 Call Hold (SS-HOLD) . 26
4.3.19 Call Completion to Busy Subscriber (SS-CCBS) . 26
4.3.20 Late Entry (SS-LE) . 26
ETSI

---------------------- Page: 3 ----------------------
4 Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)
4.3.21 Pre-emptive Priority Call (SS-PPC) . 26
4.3.22 Include Call (SS-IC) . 26
4.3.23 Barring of Outgoing Calls (SS-BOC) . 27
4.3.24 Barring of Incoming Calls (SS-BIC) . 27
4.3.25 Discreet Listening (SS-DL) . 27
4.3.26 Ambience Listening (SS-AL) . 28
4.3.27 Dynamic Group Number Assignment (SS-DGNA) . 28
4.3.28 Call Completion on No Reply (SS-CCNR) . 28
4.3.29 Call Retention (SS-CRT) . 28
4.3.30 Additional Network Feature - Inter System Interface Group Call (ANF-ISIGC) . 28
4.3.31 Additional Network Feature - Inter System Interface Short Data Service (ANF-ISISDS) . 28
4.3.32 Additional Network Feature - Inter System Interface Mobility Management (ANF-ISIMM) . 28
4.3.33 Additional Network Feature - Inter System Interface Supplementary service (ANF-ISISS) . 29
4.4 Interworking considerations . 29
5 ANF-ISIIC stage 2 specification . 29
5.1 Functional model . 29
5.1.1 Functional model description . 29
5.1.2 Description of functional entities . 34
5.1.2.1 Originating/Controlling SwMI individual call control application functional entity, FE1 . 34
5.1.2.2 Originating/Controlling SwMI ISI individual call originating functional entity, FE2 . 34
5.1.2.3 Called/Forward Switching SwMI call control functional entity, FE3 . 35
5.1.2.4 Called/Forward Switching SwMI ISI individual call functional entity, FE4 . 36
5.1.2.5 Terminating SwMI individual call control functional entity, FE5 . 36
5.1.2.6 ISI individual call terminating functional entity, FE6 . 37
5.1.2.7 New terminating SwMI call restoring functional entity, FE7 . 37
5.1.2.8 New terminating SwMI ISI call restoring functional entity (ANF-ISIIC), FE8 . 37
5.2 Information flow . 38
5.2.1 Examples of information flow sequences . 38
5.2.1.1 Introduction . 38
5.2.1.2 Successful call set-up when the called user is registered in SwMI B and uses on/off hook
signalling . 38
5.2.1.3 Successful call set up when the called user is registered in SwMI B and uses direct set-up
signalling . 39
5.2.1.4 ANF-ISIIC set-up to a called user having migrated from SwMI B, using forward switching . 41
5.2.1.5 ANF-ISIIC set-up to a called user having migrated from SwMI B, using re-routeing . 41
5.2.1.6 Loop avoidance in case of intra-TETRA call . 42
5.2.1.7 Unsuccessful ANF-ISIIC call set-up . 43
5.2.1.8 Transmission control . 44
5.2.1.9 Call modify . 47
5.2.1.10 Call restoration after migration . 47
5.2.1.11 Call clearing . 50
5.2.1.12 Resource queuing and allocation . 51
5.2.2 Definition of information flows . 52
5.2.2.1 General . 52
5.2.2.2 CALL RESTORE . 52
5.2.2.3 CALL RESTORE PREPARE . 53
5.2.2.4 CHARACTERISTIC CHANGE . 54
5.2.2.5 COMPLETE. 54
5.2.2.6 MIGRATION . 54
5.2.2.7 MODIFY . 55
5.2.2.8 RELEASE . 55
5.2.2.9 SETUP . 56
5.2.2.10 SETUP PROLONGATION . 57
5.2.2.11 TROMBONE . 58
5.2.2.12 TX-CEASED . 58
5.2.2.12.1 TX-CEASED 1 . 58
5.2.2.12.2 TX-CEASED 2 . 58
5.2.2.13 TX-CONTINUE 1 . 59
5.2.2.14 TX-CONTINUE 2 . 59
5.2.2.15 TX-DEMAND . 59
5.2.2.16 TX-GRANTED . 60
ETSI

---------------------- Page: 4 ----------------------
5 Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)
5.2.2.17 TX-INTERRUPT . 60
5.2.2.18 TX-WAIT. 60
5.3 Functional entity actions . 60
5.4 Allocation of functional entities to physical equipment/SwMIs. 61
6 ANF-ISIIC stage 3 specification . 63
6.1 ANF-ISIIC coding requirements . 63
6.1.1 General . 63
6.1.2 TETRA PDUs . 63
6.1.2.1 General encoding rule . 63
6.1.2.2 ISI-SETUP PDU message sent by the originating or the forward switching SwMI . 64
6.1.2.3 ISI-PROGRESS PDU used to give information about the call progress . 66
6.1.2.4 ISI-REDIRECT PDU sent by the called SwMI when it is not the terminating SwMI because of
migration or SS-CF invocation . 66
6.1.2.5 ISI-FORWARD SWITCH PDU sent by the originating or the forward switching SwMI to
request forward switching . 68
6.1.2.6 ISI-ALERTING PDU sent by by the terminating or the forward switching SwMI to give
information about the connected party alerted . 68
6.1.2.7 ISI-CONNECT PDU sent by by the terminating or the forward switching SwMI to give
information that the connected party has answered the call . 68
6.1.2.8 ISI-CALL PROCEEDING sent by the terminating SwMI before the ISI-ALERTING or ISI-
CONNECT message . 69
6.1.2.9 ISI-SETUP PROLONGATION PDU sent to prolong the call setup time . 70
6.1.2.10 ISI CONNECT ACKNOWLEDGE PDU sent by the originating SwMI . 70
6.1.2.11 Transmission control PDUs sent by the controlling SwMI . 70
6.1.2.12 ISI-TX WAIT PDU possibly sent by either the controlling or the terminating SwMI. 72
6.1.2.13 ISI-INFO DEMAND and ISI-INFO REPLY PDU possibly sent by either the originating or the
terminating SwMI . 72
6.1.2.14 Transmission control PDUs sent by the terminating SwMI . 73
6.1.2.15 TETRA PDUs to restore the call after the calling or the connected user has migrated in a new
S wMI . 74
6.1.2.15.1 Case where no connection between the old SwMI and the new SwMI already exists or has
not been identified . 74
6.1.2.15.2 Cases where no new connection is needed between the old SwMI and the new SwMI . 75
6.1.2.16 ISI-DISCONNECT PDU sent by a SwMI in case of call clearing or call rejection . 77
6.1.2.17 TETRA PDUs specific for interaction with supplementary service protocol sent to the
originating SwMI . 77
6.1.2.18 ISI-QUEUING PDUs sent towards the terminating SwMI . 78
6.1.2.19 ISI-RESOURCE PDU sent towards the Terminating SwMI . 79
6.1.2.20 ISI-RESOURCE RESPONSE PDUs sent towards the Called or Originating SwMI after the call
has connected . 79
6.1.3 TETRA PDU information element coding . 79
6.1.3.1 Introduction . 79
6.1.3.2 Specific ISI definition of some information elements already defined for air interface messages . 80
6.1.3.2.1 Basic service information . 80
6.1.3.2.2 Call status . 80
6.1.3.2.3 Call time-out, set-up phase . 80
6.1.3.2.4 Disconnect cause information element . 81
6.1.3.2.5 PDU type . 82
6.1.3.3 New information elements used at the ISI . 83
6.1.3.3.1 Call diverted to a dispatcher . 83
6.1.3.3.2 Call has been forward switched . 83
6.1.3.3.3 Call identified as fleet call . 83
6.1.3.3.4 Called/forwarded-to external subscriber number. 83
6.1.3.3.5 Called/forwarded-to party extension . 83
6.1.3.3.6 Called/forwarded-to party SSI . 83
6.1.3.3.7 Called/forwarded-to party fleet number SSI . 83
6.1.3.3.8 Called/forwarded-to user having migrated . 84
6.1.3.3.9 Calling external subscriber number . 84
6.1.3.3.10 Calling external subscriber number parameters . 84
6.1.3.3.11 Calling party fleet number SSI . 84
6.1.3.3.12 Calling party presentation indicator. 84
ETSI

---------------------- Page: 5 ----------------------
6 Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)
6.1.3.3.13 Cause for PDU addressed to originating SwMI . 85
6.1.3.3.14 Connected external subscriber number . 85
6.1.3.3.15 Connected external subscriber number parameters . 85
6.1.3.3.16 Connected party presentation indicator . 85
6.1.3.3.17 Connected party extension. 85
6.1.3.3.18 Connected party SSI . 85
6.1.3.3.19 Connected party fleet number SSI . 86
6.1.3.3.20 Controlling SwMI . 86
6.1.3.3.21 Incoming call barring status .
...

SLOVENSKI STANDARD
oSIST prEN 300 392-3-12 V1.2.0:2019
01-november-2019
Prizemni snopovni radio (TETRA) - Govor in podatki (V+D) - 3. del: Medsebojno
delovanje na medsistemskem vmesniku (ISI) - 12. poddel: Neodvisnost
transportnih plasti dodatne omrežne funkcije: posamezni klic (ANF-ISIIC)
Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the
Inter-System Interface (ISI) - Sub-part 12: Transport layer independent Additional
Network Feature Individual Call (ANF-ISIIC)
Ta slovenski standard je istoveten z: ETSI EN 300 392-3-12 V1.2.0 (2019-08)
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
oSIST prEN 300 392-3-12 V1.2.0:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 300 392-3-12 V1.2.0:2019

---------------------- Page: 2 ----------------------
oSIST prEN 300 392-3-12 V1.2.0:2019
Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)






EUROPEAN STANDARD
Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI);
Sub-part 12: Transport layer independent
Additional Network Feature Individual Call (ANF-ISIIC)

---------------------- Page: 3 ----------------------
oSIST prEN 300 392-3-12 V1.2.0:2019
 2 Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)



Reference
REN/TCCE-03260
Keywords
ANF, interworking, TETRA, V+D

ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 4 ----------------------
oSIST prEN 300 392-3-12 V1.2.0:2019
 3 Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)
Contents
Intellectual Property Rights . 8
Foreword . 8
Modal verbs terminology . 10
1 Scope . 11
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 13
3 Definition of terms, symbols and abbreviations . 13
3.1 Terms . 13
3.2 Symbols . 14
3.3 Abbreviations . 14
4 ANF-ISIIC stage 1 specification . 16
4.1 Description . 16
4.1.1 General description . 16
4.1.2 Qualifications on applicability to telecommunication services . 16
4.2 Procedures . 16
4.2.1 Provision/withdrawal . 16
4.2.2 Normal procedures . 16
4.2.2.1 Activation/deactivation/registration/interrogation . 16
4.2.2.2 Invocation and operation . 17
4.2.2.2.1 General . 17
4.2.2.2.2 Call routeing . 17
4.2.2.2.3 Control of call time-out timers . 17
4.2.2.2.4 Transmission control . 17
4.2.2.2.5 Setup modification. 17
4.2.2.2.6 Call modification . 18
4.2.2.2.7 Call restoration after migration . 18
4.2.2.2.8 Call clearing . 18
4.2.2.2.9 Interaction between ANF-ISIICs . 19
4.2.2.2.10 Resource queuing and allocation policies . 19
4.2.3 Exceptional procedures . 19
4.2.3.1 Activation/deactivation/registration/interrogation . 19
4.2.3.2 Invocation and operation . 19
4.3 Interactions with other TETRA supplementary services and ANFs . 20
4.3.1 Introduction. 20
4.3.2 Calling Line Identification Presentation (SS-CLIP) . 20
4.3.3 Connected Line identification Presentation (SS-COLP) . 20
4.3.4 Calling/connected Line Identification Restriction (SS-CLIR) . 20
4.3.5 Call Report (SS-CR) . 20
4.3.6 Talking Party Identification (SS-TPI) . 20
4.3.7 Call Forwarding Unconditional (SS-CFU) . 20
4.3.8 Call Forwarding on Busy (SS-CFB) . 22
4.3.9 Call Forwarding on No Reply (SS-CFNRy) . 23
4.3.10 Call Forwarding on Not Reachable (SS-CFNRc) . 24
4.3.11 List Search Call (SS-LSC) . 24
4.3.12 Call Authorized by Dispatcher (SS-CAD) . 24
4.3.13 Short Number Addressing (SS-SNA) . 25
4.3.14 Area Selection (SS-AS) . 25
4.3.15 Access Priority (SS-AP) . 25
4.3.16 Priority Call (SS-PC) . 26
4.3.17 Call Waiting (SS-CW) . 26
4.3.18 Call Hold (SS-HOLD) . 26
4.3.19 Call Completion to Busy Subscriber (SS-CCBS) . 26
4.3.20 Late Entry (SS-LE) . 26
ETSI

---------------------- Page: 5 ----------------------
oSIST prEN 300 392-3-12 V1.2.0:2019
 4 Draft ETSI EN 300 392-3-12 V1.2.0 (2019-08)
4.3.21 Pre-emptive Priority Call (SS-PPC) . 26
4.3.22 Include Call (SS-IC) . 26
4.3.23 Barring of Outgoing Calls (SS-BOC) . 27
4.3.24 Barring of Incoming Calls (SS-BIC) . 27
4.3.25 Discreet Listening (SS-DL) . 27
4.3.26 Ambience Listening (SS-AL) . 28
4.3.27 Dynamic Group Number Assignment (SS-DGNA) . 28
4.3.28 Call Completion on No Reply (SS-CCNR) . 28
4.3.29 Call Retention (SS-CRT) . 28
4.3.30 Additional Network Feature - Inter System Interface Group Call (ANF-ISIGC) . 28
4.3.31 Additional Network Feature - Inter System Interface Short Data Service (ANF-ISISDS) . 28
4.3.32 Additional Network Feature - Inter System Interface Mobility Management (ANF-ISIMM) . 28
4.3.33 Additional Network Feature - Inter System Interface Supplementary service (ANF-ISISS) . 29
4.4 Interworking considerations . 29
5 ANF-ISIIC stage 2 specification . 29
5.1 Functional model . 29
5.1.1 Functional model description . 29
5.1.2 Description of functional entities . 34
5.1.2.1 Originating/Controlling SwMI individual call control application functional entity, FE1 . 34
5.1.2.2 Originating/Controlling SwMI ISI individual call originating functional entity, FE2 . 34
5.1.2.3 Called/Forward Switching SwMI call control functional entity, FE3 . 35
5.1.2.4 Called/Forward Switching SwMI ISI individual call functional entity, FE4 . 36
5.1.2.5 Terminating SwMI individual call control functional entity, FE5 . 36
5.1.2.6 ISI individual call terminating functional entity, FE6 . 37
5.1.2.7 New terminating SwMI call restoring functional entity, FE7 . 37
5.1.2.8 New terminating SwMI ISI call restoring functional entity (ANF-ISIIC), FE8 . 37
5.2 Information flow . 38
5.2.1 Examples of information flow sequences . 38
5.2.1.1 Introduction . 38
5.2.1.2 Successful call set-up when the called user is registered in SwMI B and uses on/off hook
signalling . 38
5.2.1.3 Successful call set up when the called user is registered in SwMI B and uses direct set-up
signalling . 39
5.2.1.4 ANF-ISIIC set-up to a called user having migrated from SwMI B, using forward switching . 41
5.2.1.5 ANF-ISIIC set-up to a called user having migrated from SwMI B, using re-routeing . 41
5.2.1.6 Loop avoidance in case of intra-TETRA call . 42
5.2.1.7 Unsuccessful ANF-ISIIC call set-up . 43
5.2.1.8 Transmission control . 44
5.2.1.9 Call modify . 47
5.2.1.10 Call restoration after migration . 47
5.2.1.11 Call clearing . 50
5.2.1.12 Resource queuing and allocation . 51
5.2.2 Definition of information flows . 52
5.2.2.1 General . 52
5.2.2.2 CALL RESTORE . 52
5.2.2.3 CALL RESTORE PREPARE . 53
5.2.2.4 CHARACTERISTIC CHANGE . 54
5.2.2.5 COMPLETE. 54
5.2.2.6 MIGRATION . 54
5.2.2.7 MODIFY . 55
5.2.2.8 RELEASE . 55
5.2.2.9 SETUP . 56
5.2.2.10 SETUP PROLONGATION . 57
5.2.2.11 TROMBONE . 58
5.2.2.12 TX-CEASED . 58
5.2.2.12.1 TX-CEASED 1 . 58
5.2.2.12.2 TX-CEASED 2 . 58
5.2.2.13 TX-CONTINUE 1 . 59
5.2.2.14 TX-CONTINUE 2 . 59
5.2.2.15 TX-DEMAND . 59
5.2.2.16 TX-GRANTED . 60
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5.2.2.17 TX-INTERRUPT . 60
5.2.2.18 TX-WAIT. 60
5.3 Functional entity actions . 60
5.4 Allocation of functional entities to physical equipment/SwMIs. 61
6 ANF-ISIIC stage 3 specification . 63
6.1 ANF-ISIIC coding requirements . 63
6.1.1 General . 63
6.1.2 TETRA PDUs . 63
6.1.2.1 General encoding rule . 63
6.1.2.2 ISI-SETUP PDU message sent by the originating or the forward switching SwMI . 64
6.1.2.3 ISI-PROGRESS PDU used to give information about the call progress . 66
6.1.2.4 ISI-REDIRECT PDU sent by the called SwMI when it is not the terminating SwMI because of
migration or SS-CF invocation . 66
6.1.2.5 ISI-FORWARD SWITCH PDU sent by the originating or the forward switching SwMI to
request forward switching . 68
6.1.2.6 ISI-ALERTING PDU sent by by the terminating or the forward switching SwMI to give
information about the connected party alerted . 68
6.1.2.7 ISI-CONNECT PDU sent by by the terminating or the forward switching SwMI to give
information that the connected party has answered the call . 68
6.1.2.8 ISI-CALL PROCEEDING sent by the terminating SwMI before the ISI-ALERTING or ISI-
CONNECT message . 69
6.1.2.9 ISI-SETUP PROLONGATION PDU sent to prolong the call setup time . 70
6.1.2.10 ISI CONNECT ACKNOWLEDGE PDU sent by the originating SwMI . 70
6.1.2.11 Transmission control PDUs sent by the controlling SwMI . 70
6.1.2.12 ISI-TX WAIT PDU possibly sent by either the controlling or the terminating SwMI. 72
6.1.2.13 ISI-INFO DEMAND and ISI-INFO REPLY PDU possibly sent by either the originating or the
terminating SwMI . 72
6.1.2.14 Transmission control PDUs sent by the terminating SwMI . 73
6.1.2.15 TETRA PDUs to restore the call after the calling or the connected user has migrated in a new
S wMI . 74
6.1.2.15.1 Case where no connection between the old SwMI and the new SwMI already exists or has
not been identified . 74
6.1.2.15.2 Cases where no new connection is needed between the old SwMI and the new SwMI . 75
6.1.2.16 ISI-DISCONNECT PDU sent by a SwMI in case of call clearing or call rejection . 77
6.1.2.17 TETRA PDUs specific for interaction with supplementary service protocol sent to the
originating SwMI . 77
6.1.2.18 ISI-QUEUING PDUs sent towards the terminating SwMI . 78
6.1.2.19 ISI-RESOURCE PDU sent towards the Terminating SwMI . 79
6.1.2.20 ISI-RESOURCE RESPONSE PDUs sent towards the Called or Originating SwMI after the call
has connected . 79
6.1.3 TETRA PDU information element coding . 79
6.1.3.1 Introduction . 79
6.1.3.2 Specific ISI definition of some information elements already defined for air interface messages . 80
6.1.3.2.1 Basic service information . 80
6.1.3.2.2 Call status . 80
6.1.3.2.3 Call time-out, set-up phase . 80
6.1.3.2.4 Disconnect cause information element . 81
6.1.3.2.5 PDU type . 82
6.1.3.3 New information elements used at the ISI . 83
6.1.3.3.1 Call diverted to a dispatcher . 83
6.1.3.3.2 Call has been forward switched . 83
6.1.3.3.3 Call identified as fleet call . 83
6.1.3.3.4 Called/forwarded-to external subscriber number. 83
6.1.3.3.5 Called/forwarded-to party extension . 83
6.1.3.3.6 Called/forwarded-to party SSI . 83
6.1.3.3.7 Called/forwarded-to party fleet number SSI . 83
6.1.3.3.8 Called/forwarded-to user having migrated . 84
6.1.3.3.9 Calling external subscriber number . 84
6.1.3.3.10 Calling external subscriber number parameters . 84
6.1.3.3.11 Calling party fleet number SSI . 84
6.1.3.3.12 Calling party presentation indicator. 84
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6.1.3.3.13 Cause for PDU addressed to originating SwMI .
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