SIST EN 300 392-11-17 V1.1.2:2003

• Abstract:

  To define the Stage 2 requirements for TETRA SS Include Call

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.10 - Terrestrial Trunked Radio (TETRA)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Mandate: BC-T-344
• Ref Project: ETSI EN 300 392-11-17 V1.1.2 (2002-01) - Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 17: Include Call (IC)

SIST EN 300 392-11-17 V1.1.2:2003 is the Slovenian adoption of ETSI EN 300 392-11-17 for Terrestrial Trunked Radio (TETRA) Voice plus Data (V+D). It specifies the Stage 2 functional description for the Supplementary Service Include Call (SS-IC), which lets a served user already in an active call add new participant(s) so the result is a group call. It is aimed at TETRA V+D terminal equipment and networks and focuses on functional behavior, information flows, and interworking.

What does SIST EN 300 392-11-17 V1.1.2:2003 specify?

SIST EN 300 392-11-17 V1.1.2:2003 specifies the Stage 2 description of SS-IC for TETRA. In practice, that means it defines how the service behaves between users, networks, and functional entities before the detailed signalling of Stage 3.

The document says SS-IC is used when a served user is already in an active call and wants to include new participant(s) into a group call together with the participants in the original call. Man-Machine Interface (MMI) and charging principles are outside the scope.

The document is organized into clauses for scope, references, definitions and abbreviations, functional model, information flows, allocation of functional entities to physical equipment, and interworking considerations.

What are the key requirements of SIST EN 300 392-11-17 V1.1.2:2003?

SIST EN 300 392-11-17 V1.1.2:2003 defines SS-IC as a service that turns an active call into a group call by adding new participant(s). For implementers, the key point is that the service is not just a user action - it changes the call structure and requires network support.

• The functional model uses Functional Entities (FEs): FE1, FE21, FE22, FE23, FE25, FE3, and FE5, with named relationships ra to re. This matters because the standard maps service behavior to specific roles in the served user, Switching and Management Infrastructure (SwMI), and other parties.
• FE21 checks whether SS-IC is subscribed for the served user and, if so, starts the second call toward the affected user(s). In practice, the network must verify entitlement before trying to add anyone.
• FE22 merges the original call and the second call into a single group call. This is the core service effect that operators and vendors need to support.
• FE23, FE25, FE3, and FE5 carry notifications and call modifications to the other party and the affected user. This means the service is not silent - participants are informed that the call has been extended.
• The main information flows are INVOKE, INFORM, CANCEL, BASIC CALL FAIL, NOT SUBSCRIBED, and NOT SUPPORTED. These are the service-level messages used to request, confirm, cancel, or reject SS-IC operation.
• INVOKE carries the new participant(s); CANCEL identifies the to-be included party; BASIC CALL FAIL reports that the service failed because call setup failed; NOT SUBSCRIBED and NOT SUPPORTED explain why invocation cannot proceed. That distinction is important for troubleshooting and user feedback.
• The service primitives at the MS/LS TNSS-SAP are INVOKE request, INVOCATION FAILURE indication, and INFORM indication. This is the interface point for terminal and application behavior.
• Interworking with migration is covered through ANF-ISIMM profile update procedures, which carry SS-IC subscription and activation state. For multi-network use, this is what keeps service status aligned when a subscriber moves between SwMIs.

What terms does SIST EN 300 392-11-17 V1.1.2:2003 define?

• served user - the user already participating in a call who invokes SS-IC.
• original call - the call already established before new participant(s) are included.
• affected user - the user or users included in the original call; after SS-IC, the result is a group call.
• another user - any user in the original call other than the served user, to which new users will be included.
• SwMI - Switching and Management Infrastructure, the network side of TETRA.
• SS-IC - Include Call, the supplementary service covered by this standard.
• FE - Functional Entity, the service role model used to describe behavior and information exchange.
• ANF-ISIMM - Additional Network Feature - Inter-System Interface Mobility Management, used for subscriber profile exchange across SwMIs.

Who uses SIST EN 300 392-11-17 V1.1.2:2003?

SIST EN 300 392-11-17 V1.1.2:2003 is used by TETRA network operators, SwMI designers, terminal manufacturers, system integrators, and test engineers. It helps them design, implement, and verify SS-IC behavior in V+D networks and terminal equipment.

Quality and interoperability teams use it to check that subscription handling, call inclusion, notifications, and migration-related profile updates match the TETRA service model.

Which standards are used with SIST EN 300 392-11-17 V1.1.2:2003?

• ITU-T Recommendation I.130 - gives the method used to characterize telecommunication services in Stage 2.
• ETSI EN 300 392-2 - provides the TETRA Voice plus Data air interface basis.
• ETSI EN 300 392-3-2 - covers ISI support for individual call.
• ETSI ETS 300 392-3-3 - covers ISI support for group call.
• ETSI ETS 300 392-3-5 - covers mobility management, including the profile update procedures used for SS-IC support and subscription status.
• ETSI EN 300 392-9 - gives the general requirements for supplementary services and the framework used here.
• ETSI ETS 300 392-10-17 - provides the Stage 1 description of Include Call.
• ETSI EN 300 392-12-17 - provides the Stage 3 signalling procedures and the service primitives used here.
• ISO/IEC 11574 - supplies the basic call model and definitions used to relate SS-IC to basic call behavior.

What does the SIST EN 300 392-11-17 V1.1.2:2003 document contain?

The document contains a functional model with diagrams, detailed descriptions of each FE, and the relationship of SS-IC to the basic call model. It also includes tables for the contents of each information flow and examples of successful and unsuccessful sequences.

It further provides FE action listings, physical allocation scenarios for SwMIs and MS/LSs, and interworking guidance for subscribers moving between networks. For implementers, these sections show how SS-IC behaves in practice, not just how it is named.

SLOVENSKI STANDARD
01-december-2003
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VWRULWYHVWRSQMH±SRJODYMH9NOMXþLWYHQLNOLF,&
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary
services stage 2; Sub-part 17: Include Call (IC)
Ta slovenski standard je istoveten z: EN 300 392-11-17 Version 1.1.2
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

European Standard (Telecommunications series)

Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 11: Supplementary services stage 2;
Sub-part 17: Include Call (IC)

2 ETSI EN 300 392-11-17 V1.1.2 (2002-01)

Reference
DEN/TETRA-03A-11-17
Keywords
data, radio, speech, stage 2, supplementary
service, TETRA, V+D
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ETSI
3 ETSI EN 300 392-11-17 V1.1.2 (2002-01)
Contents
Intellectual Property Rights.4
Foreword.4
1 Scope.5
2 References.5
3 Definitions and abbreviations.6
3.1 Definitions.6
3.2 Abbreviations.6
4 Functional model.7
4.1 Functional model description.7
4.2 Description of functional entities .8
4.2.1 Served user functional entity, FE1.8
4.2.2 Served user SwMI functional entity, FE21.8
4.2.3 Group controlling SwMI functional entity, FE22 .8
4.2.4 Other party SwMI functional entity, FE23 .8
4.2.5 Affected user SwMI functional entity, FE25 .8
4.2.6 Other party functional entity, FE3 .8
4.2.7 Affected user functional entity, FE5.9
4.3 Relationship of functional model to basic call functional model .9
5 Information flows.10
5.1 Definition of information flows.10
5.1.1 BASIC CALL FAIL.10
5.1.2 CANCEL.10
5.1.3 INFORM.10
5.1.4 INVOKE.10
5.1.5 NOT SUBSCRIBED.11
5.1.6 NOT SUPPORTED.11
5.2 Relationship of information flows to basic individual call information flows .11
5.3 Service primitives.11
5.4 Examples of information flow sequences.12
5.4.1 Successful invocation and operation.12
5.4.2 Unsuccessful invocation.13
5.4.2.1 SS-IC not subscribed to.13
5.4.2.2 SS-IC failure due to basic call failure .13
5.4.2.3 SS-IC not supported .14
5.4.3 SS-IC cancellation.14
5.5 FE actions.15
5.5.1 Functional Entity actions of FE1 .15
5.5.2 Functional Entity actions of FE21 .15
5.5.3 Functional Entity Actions of FE23 .15
5.5.4 Functional Entity actions of FE25 .16
5.5.5 Functional Entity actions of FE3 .16
5.5.6 Functional Entity actions of FE5 .16
6 Allocation of functional entities to physical equipment.16
7 Interworking considerations.17
History .18

ETSI
4 ETSI EN 300 392-11-17 V1.1.2 (2002-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Project Terrestrial Trunked Radio
(TETRA).
The present document is part 11, sub-part 17 of a multi-part deliverable covering Voice plus Data (V+D), as identified
below:
Part 1: "General network design";
Part 2: "Air Interface (AI)";
Part 3: "Interworking at the Inter-System Interface (ISI)";
Part 4: "Gateways basic operation";
Part 5: "Peripheral Equipment Interface (PEI)";
Part 7: "Security";
Part 9: "General requirements for supplementary services";
Part 10: "Supplementary services stage 1";
Part 11: "Supplementary services stage 2";
Part 12: "Supplementary services stage 3";
Part 13: "SDL model of the Air Interface (AI)";
Part 14: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 15: "TETRA frequency bands, duplex spacings and channel numbering";
Part 16: "Network Performance Metrics";
Part 17: "TETRA V+D and DMO Release 1.1 specifications".

National transposition dates
Date of adoption of this EN: 11 January 2002
Date of latest announcement of this EN (doa): 30 April 2002
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 October 2002
Date of withdrawal of any conflicting National Standard (dow): 31 October 2002

ETSI
5 ETSI EN 300 392-11-17 V1.1.2 (2002-01)
1 Scope
The present document specifies the stage 2 description of the Supplementary Service Include Call (SS-IC) for the
Terrestrial Trunked Radio (TETRA).
SS-IC enables a served user, while already participating in an active call (original call) to include new participant(s)
into a group call together with the participant(s) in the original call.
Man-Machine Interface (MMI) and charging principles are outside of the scope of the present document.
Supplementary service specifications are produced in three stages according to the method defined in
ITU-T Recommendation I.130 [1]. The stage 2 description identifies the functional capabilities and the information
flows needed to support the supplementary service as specified in its stage 1 description (see ETS 300 392-10-17 [7]).
The stage 2 description is followed by the stage 3 description, which specifies the protocols at the air interface and at
the various Inter-System Interfaces (ISI) to support the service.
The present document is applicable to TETRA Voice plus Data terminal equipment and networks.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
[1] ITU-T Recommendation I.130 (1988): "Method for the characterization of telecommunication
services supported by an ISDN and network capabilities of an ISDN".
[2] ETSI EN 300 392-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air
Interface (AI)".
[3] ETSI EN 300 392-3-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 2: Additional Network Feature
Individual Call (ANF-ISIIC)".
[4] ETSI ETS 300 392-3-3: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 3: Additional Network Feature
Group Call (ANF-ISIGC)".
[5] ETSI ETS 300 392-3-5: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 5: Additional Network Feature
for Mobility Management (ANF-ISIMM)".
[6] ETSI EN 300 392-9: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 9: General requirements for supplementary services".
[7] ETSI ETS 300 392-10-17: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 10: Supplementary services stage 1; Sub-part 17: Include call".
[8] ETSI EN 300 392-12-17: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 12: Supplementary services stage 3; Sub-part 17: Include Call (IC)".
[9] ISO/IEC 11574: "Information technology - Telecommunications and information exchange
between systems - Private Integrated Services Network - Circuit-mode 64 kbit/s bearer services -
Service description, functional capabilities and information flows".
ETSI
6 ETSI EN 300 392-11-17 V1.1.2 (2002-01)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
affected user: user or users included in the original call
NOTE: The original call may be either a group call or an individual call but the resulting call is a group call.
affected user SwMI: any SwMI where an affected user is currently registered
another user: any other than server user in the original call to which new users will be included
another user SwMI: any SwMI where another user is currently registered
original call: the call already established in which the served user participates and which will be included in a group
call together with new participant added by the served user
In addition, the terms and definitions of EN 300 392-9 [6] apply with the following modifications:
served user: user already participating in a call and who invokes the SS-IC supplementary service
served user SwMI: SwMI where the served user is currently registered
NOTE: The served user SwMI will be the group controlling SwMI of the resulting group call.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ANF-ISIMM Additional Network Feature - Inter-System Interface Mobility Management
ANF-ISIGC Additional Network Feature - Inter-System Interface Group Call
ANF-ISIIC Additional Network Feature - Inter-System Interface Individual Call
CC Basic Service Call Control functional entity
CCA Basic Service Call Control functional entity agent
NOTE: CC and CCA are applied as defined in ISO/IEC 11574 [9].
IC Include Call
FE Functional Entity
ISI Inter-System Interface
LS Line Station
MS Mobile Station
SDL Specification and Description Language
SS Supplementary Service
NOTE: The abbreviation SS is only used when referring to a specific supplementary service (e.g. SS-IC).
SwMI Switching and Management Infrastructure
ETSI
7 ETSI EN 300 392-11-17 V1.1.2 (2002-01)
4 Functional model
4.1 Functional model description
The functional model shall comprise the following Functional Entities (FEs):
FE1 Served user functional entity;
FE2 Generic combination of FE21, FE22, FE23 and FE25;
FE21 Served user SwMI individual call FE;
FE22 Group controlling SwMI FE;
FE23 Another party SwMI in the original call;
FE25 Affected user SwMI FE;
FE3 Another party in the original call;
FE5 Affected user FE (included user).
The following relationships shall exist:
ra between FE1 and FE21/FE22;
rb between FE23/FE25 and FE3;
rc between FE25/FE23 and FE5/FE3;
rd between FE21/FE22 and FE23/FE25;
re between FE21/FE25 and FE25/FE23.
Figure 1 shows these FEs and relationships. Figure 2 shows simplified FE model and relationships.
rb
FE5/
FE3 FE23
FE3
rc
rd
re
ra
FE21/ FE25/
FE1
FE23
FE22
NOTE: Functional entity FE2 is a combination of FE21, FE22 and FE25

Figure 1: Functional model for the basic operational part of SS-IC
ETSI
8 ETSI EN 300 392-11-17 V1.1.2 (2002-01)
ra      rb
FE1 FE2 FE3
user A SS-IC FE user B
rc
FE5
user C
Figure 2: Functional model for the basic operation in a single SwMI
4.2 Description of functional entities
4.2.1 Served user functional entity, FE1
FE1 is the functional entity which serves the served user for the invocation of SS-IC.
4.2.2 Served user SwMI functional entity, FE21
When it receives a SS-IC invocation from FE1, FE21 checks whether SS-IC has been subscribed and, if yes, sets a
second call to the included party FE5 and requests FE22 to include the original call and the second call (into a group
call).
4.2.3 Group controlling SwMI functional entity, FE22
When informed by FE21 that SS-IC has been invoked FE22 includes all participants in the original call and the second
call into a single group call.
4.2.4 Other party SwMI functional entity, FE23
FE23 receives from FE22 the information that SS-IC has been operated for the call and passes it to the other party FE3
entity and modifies the call into a group call, when necessary.
4.2.5 Affected user SwMI functional entity, FE25
FE25 may receive from FE21 information that SS-IC has been invoked (by the served user) for an individual user
inclusion for FE5 availability checking.
...