SIST ETS 300 392-11-2 E1:2003

• Abstract:

  To define the Stage 2 requirements for TETRA SS Call Report

• 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
• Ref Project: ETSI ETS 300 392-11-2 ed.1 (2000-09) - Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 2: Call Report (CR)

SIST ETS 300 392-11-2 E1:2003 is the Slovenian adoption of ETS 300 392-11-2 Edition 1 for Terrestrial Trunked Radio (TETRA) Voice plus Data (V+D), Part 11 supplementary services stage 2, sub-part 2 Call Report (CR). It specifies the stage 2 functional description and information flows for the Call Report supplementary service, for TETRA MS/LS and Switching and Management Infrastructure (SwMI) involved in delivering and using that service.

What does SIST ETS 300 392-11-2 E1:2003 specify?

SIST ETS 300 392-11-2 E1:2003 specifies how SS-CR works at stage 2: the functional capabilities, the entities involved, and the information flows needed to support the stage 1 service. SS-CR lets the originator of an individual call leave identity information for the called party, so the called user can later see who tried to call.

The document also sets clear boundaries. Man-Machine Interface, charging principles, SDS-TL use for call report, and interworking gateways to non-TETRA networks are outside its scope.

The body of the document is organized into these main parts:

• Clause 1 Scope
• Clause 2 Normative references
• Clause 3 Definitions, symbols and abbreviations
• Clause 4 SS-CR Stage 2 Specifications, including functional model, service primitives, information flows, entity actions, allocation to physical equipment, and inter-working considerations
• Bibliography and History

What are the key requirements of SIST ETS 300 392-11-2 E1:2003?

Functional model and roles

Clause 4.1 defines the SS-CR functional model for individual calls. The model uses FE1, FE21, FE25, FE25' and FE5, with relationships ra, rb and rc between them. In practice, this tells implementers where the service logic sits: at the served user side, inside the network, and at the affected user side.

FE1 serves user A, the caller who invokes SS-CR. FE21 and FE25 co-operate inside the network to manage the service, while FE5 serves user B, the monitored or affected user. FE25' is only used in call restoration and acts like FE25 when FE5 has moved.

Service primitives and information flows

Clause 4.2 and Clause 4.3 define the service primitives and information flows used for SS-CR. The served user side uses CALL-REPORT indication and CALL-REPORT request, while the affected user side uses CALL-REPORTING indication. This matters because terminals and network nodes must generate, accept and forward the right service events at the right interface.

The defined flows include CALL-REPORT indication, CALL-REPORT request, CALL-REPORTING indication, CALL-REPORT-CRI and ISI-SS-CR. Their information content is specified with mandatory and optional elements such as CALL-REPORT Identifier, TETRA Call Identifier, Calling User Identity, Message Validity Timer, Time Stamp, Call Priority and Reject cause. For implementation, this means the network must carry the caller identity and call reference correctly, and may also carry timing and priority data when needed.

Timers and retention of call information

The definitions in Clause 3 and the actions in Clause 4.4 make two timers important: the CC-SS retention timer and the SS-CR message validity timer. The retention timer keeps failed-call information available long enough for user A to request SS-CR, while the message validity timer limits how long the infrastructure keeps a stored message.

In practice, FE21 stores details of the failed basic call and starts the call retention timer. If SS-CR is requested before that timer expires, the service can proceed; if it is requested after expiry, the call references and parameters are removed.

Call cases covered by the procedures

Clause 4.3.3 gives example sequences for the main call outcomes: busy due to UDUB, busy due to NDUB, no reply, not reachable, and unsuccessful invocation. These examples matter because they show when SS-CR can still be invoked and when it cannot.

For no reply and not reachable cases, the document shows how the network can keep or recover the relevant call information long enough to present CALL-REPORTING to user B once the user becomes reachable. For busy cases, the service can still report the call attempt if the call setup failure and retention rules allow it.

Entity actions and physical allocation

Clause 4.4 assigns the required actions to each functional entity. FE1 stores failed-call information and presents it to the user application, FE21 manages the retained call data and request handling, FE25 stores the request against user B and controls delivery of CALL-REPORTING, and FE5 presents the call report to the user application. These actions show what each product or network element must actually do.

Clause 4.5 then maps the entities to physical equipment for two main scenarios: user A and user B in the same SwMI, and user A and user B in different SwMIs. That helps designers decide where the feature must be implemented in terminal, network, or both.

What terms does SIST ETS 300 392-11-2 E1:2003 define?

• Supplementary service (SS) - a service that modifies or supplements a bearer service or teleservice, and is not offered as a stand-alone service.
• Mobile Station (MS) - the mobile equipment grouping used to obtain TETRA services.
• Switching and Management Infrastructure (SwMI) - the TETRA network equipment, except subscriber terminals, that connects subscribers through the network.
• SS-CR - the Call Report supplementary service that lets the caller leave identity information for the called party.
• UDUB - User Determined User Busy, where the called user is busy by choice or condition.
• NDUB - Network Determined User Busy, where the network decides the user is busy.
• CC-SS retention timer - the timer that keeps call-identification data available after disconnection so supplementary service procedures can still use it.
• SS-CR message validity timer - the timer that defines how long a stored SS-CR message remains in the infrastructure.

Who uses SIST ETS 300 392-11-2 E1:2003?

SIST ETS 300 392-11-2 E1:2003 is used by TETRA terminal designers, SwMI network engineers, and system integrators who need to implement Call Report in individual calls. It is also relevant to test and interoperability teams that verify the information flows, timers and entity actions defined for SS-CR.

Operators, quality managers and buyers use it to check whether a TETRA solution supports call report at stage 2 in the MS/LS and SwMI parts of the system. That helps them match the standard to a specific network or terminal procurement need.

What changed in SIST ETS 300 392-11-2 E1:2003 from the previous edition?

SIST ETS 300 392-11-2 E1:2003 is identified as the Slovenian standard identical to ETS 300 392-11-2 Edition 1. The history identifies it as the first edition.

Which standards are used with SIST ETS 300 392-11-2 E1:2003?

Standard	What it contributes
CCITT Recommendation I.130	The method for characterizing telecommunication services, used as the basis for the three-stage supplementary service approach.
ITU-T Recommendation Z.100	SDL notation and specification method used for the functional and message diagrams.
ETS 300 392-10-2	The stage 1 description of Call Report, which this stage 2 specification supports.
ETS 300 392-12-02	The stage 3 Call Report specification, which defines the protocol support for the stage 2 model.
ETS 300 392-2	The TETRA air interface standard, including basic call context and service primitives.
ITU-T Recommendation I.221	Definitions and characteristics used for concepts such as busy conditions.

What does the SIST ETS 300 392-11-2 E1:2003 document contain?

The document contains a functional model for SS-CR, with figures showing how the supplementary service entities relate to the basic individual call model. It also contains tables for the information content of the defined primitives and information flows, so implementers can see which data items move between entities.

Several example sequences show successful and unsuccessful SS-CR invocation for busy, no reply and not reachable situations. The document also gives the functional entity actions for FE1, FE21, FE25 and FE5, plus a table for allocating those entities to physical equipment in different SwMI scenarios.

SLOVENSKI STANDARD
01-december-2003
3UL]HPQLVQRSRYQLUDGLR7(75$±*RYRULQSRGDWNL9'±GHO'RSROQLOQH
VWRULWYHVWRSQMH±SRJODYMH3RURþLORRNOLFX&5
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary
services stage 2; Sub-part 2: Call Report (CR)
Ta slovenski standard je istoveten z: ETS 300 392-11-2 Edition 1
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 ETS 300 392-11-2
TELECOMMUNICATION September 2000
STANDARD
Source: TETRA Reference: DE/TETRA-03001-11-02
ICS: 33.020
Key words: data, radio, speech, stage 2, supplementary service, TETRA, V+D
Terrestrial Trunked Radio (TETRA);
VoiceplusData (V+D);
Part 11: Supplementary services stage 2;
Sub-part 2: Call Report (CR)
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Internet: [e-mail] - http://www.etsi.org
Tel.:[phone]- Fax:[phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2000. All rights reserved.

Page 2
ETS 300 392-11-2: September 2000
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Standards Making Support Dept." at the address shown on the title page.

Page 3
ETS 300 392-11-2: September 2000
Contents
Foreword.5
1 Scope .7
2 Normative references.7
3 Definitions, symbols and abbreviations.8
3.1 Definitions .8
3.2 Symbols .8
3.3 Abbreviations .8
3.3.1 General abbreviations .8
3.3.2 Supplementary service abbreviations .9
4 SS-CR Stage 2 Specifications .9
4.1 Functional model.9
4.1.1 Functional model description.9
4.1.2 Description of the functional entities .10
4.1.2.1 Originating SS-CR served user FE, FE1.10
4.1.2.2 Originating SS-CR controlling FE, FE21 .10
4.1.2.3 Terminating SS-CR controlling FE, FE25.10
4.1.2.4 Terminating SS-CR FE, FE5 .10
4.1.3 Relationship of functional model to basic call functional model.10
4.2 Service Primitives .10
4.3 Information flows.11
4.3.1 Definition of information flows .11
4.3.1.1 CALL-REPORT indication .11
4.3.1.2 CALL-REPORT request .11
4.3.1.3 CALL-REPORTING indication.11
4.3.1.4 CALL-REPORT-CRI .12
4.3.1.5 ISI-SS-CR .12
4.3.2 Relationship of information flows to basic individual call information flows .12
4.3.3 Examples of information flow sequences.13
4.3.3.1 Successful invocation of SS-CR in case of user B busy
(UDUB) .13
4.3.3.2 Successful invocation of SS-CR in case of user B busy
(NDUB) .14
4.3.3.3 Successful invocation of SS-CR in case of no reply .15
4.3.3.4 Successful invocation of SS-CR in case of Not
Reachable.16
4.3.3.5 Unsuccessful invocation of SS-CR.17
4.4 Functional entity actions .17
4.4.1 Functional entity actions of FE1 .17
4.4.2 Functional entity actions of FE21 .17
4.4.3 Functional entity actions of FE25 .18
4.4.4 Functional entity actions of FE5 .18
4.5 Allocation of functional entities to physical equipment .18
4.6 Inter-working considerations.18
Bibliography.19
History.20

Page 4
ETS 300 392-11-2: September 2000
Blank page
Page 5
ETS 300 392-11-2: September 2000
Foreword
This European Telecommunication Standard (ETS) has been produced by the ETSI Project Terrestrial
Trunked Radio (TETRA).
This ETS consists of the following parts:
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 6: "Line connected Station (LS)";
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".
Transposition dates
Date of adoption of this ETS: 25 August 2000
Date of latest announcement of this ETS (doa):
30 November 2000
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 May 2001
Date of withdrawal of any conflicting National Standard (dow): 31 May 2001

Page 6
ETS 300 392-11-2: September 2000
Blank page
Page 7
ETS 300 392-11-2: September 2000
1 Scope
This European Telecommunication Standard (ETS) specifies the stage 2 description of the
Supplementary Service Call Report (SS-CR) for the Terrestrial Trunked RAdio (TETRA).
SS-CR is a supplementary service which allows the call originator of an individual call to leave his/her
identity for the called party.
Man-Machine Interface and charging principles are outside the scope of this ETS.
Supplementary service specifications are produced in three stages according to the method defined in
CCITT 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 300 392-10-2 [3]). 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.
This ETS is applicable to MS/LS and SwMIs involved in the operation of those supplementary services.
Specifications of inter-working gateways to non-TETRA networks (mainly PSTN and ISDN) while affected
by that ETS are outside the scope of this ETS.
Use of SDS-TL for call report is outside the scope of this ETS.
NOTE: The stage 2 description is followed by the stage 3 description, which specifies the
encoding rules for the information flows and process behavior for the different entities
in SwMI, MS and LS.
2 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies.
[1] CCITT Recommendation I.130 (1988): "Method for the characterization of
telecommunication services supported by an ISDN and network capabilities of
an ISDN".
[2] ITU-T Recommendation Z.100 (1993): "CCITT Specification and description
language (SDL) ".
[3] ETSI ETS 300 392-10-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data
(V+D); Part 10: Supplementary services stage 1; Sub-part 2: Call report".
[4] ETSI ETS 300 392-12-02: "TETRA; Voice+Data; Part 12: Supplementary
Services stage 3; Part 12-3: Call Report".
[5] ETSI ETS 300 392-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data
(V+D); Part 2: Air Interface (AI)".
[6] ITU-T Recommendation I.221 (1993): "Common specific characteristics of
services".
Page 8
ETS 300 392-11-2: September 2000
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of this ETS, the following terms and definitions apply:
bearer service: type of telecommunication service that provides the capability for the transmission of
signals between user-network interfaces.
busy: property of a user for whom either a network determined user busy or a user determined user busy
condition applies (see ITU-T Recommendation I.221 [6]).
identity presentation: stored/displayed identification provided to the called party for subsequent call
back.
Mobile Station (MS): physical grouping that contains all of the mobile equipment that is used to obtain
TETRA services. By definition, a mobile station contains at least one Mobile Radio Stack (MRS).
CC-SS retention timer: timer started by the infrastructure upon disconnection of the call, which allows
the user to use the call Identification in order to invoke/activate/interrogate a supplementary service
related to that call. After expiry of the timer, the user is no longer able to use the call Identification in order
to carry out supplementary service procedures.
SS-CR message validity timer: timer controlled by the infrastructure but defined by the served user,
which determines how long a message can be stored in the infrastructure. After expiry of the timer the
message is deleted.
supplementary service: supplementary service modifies or supplements a bearer service or a
teleservice. A supplementary service cannot be offered to a customer as a stand alone service. It should
be offered in combination with a bearer service or a teleservice.
Switching and Management Infrastructure (SwMI): all of the TETRA equipment for a Voice plus Data
(V+D) network except for subscriber terminals. The SwMI enables subscriber terminals to communicate
with each other via the SwMI.
teleservice: type of telecommunications service that provides the complete capability, including terminal
equipment functions, for communication between users according to agreed protocols.
user A: specific user that originated the call and requested the supplementary service.
user B: user that was initially addressed in the original call set up.
user C: user who is the diverted-to user.
3.2 Symbols
There are no other symbols in this ETS besides those symbols used in SDL diagrams according to
ITU-T Recommendation Z.100 [2].
3.3 Abbreviations
3.3.1 General abbreviations
For the purposes of this ETS, the following general abbreviations apply:
CC Call Completion
GTSI Group TETRA Subscriber Identity
ISDN Integrated Services Digital Network
ITSI Individual TETRA Subscriber Identity
MS Mobile Station
NDUB Network Determined User Busy
SDL (Functional) Specification and Description Language

Page 9
ETS 300 392-11-2: September 2000
SS Supplementary Service
NOTE: The abbreviation SS is only used when referring to a specific supplementary service.
SwMI Switching and Management Infrastructure
TETRA Terrestrial Trunked Radio
UDUB User Determined User Busy
V+D Voice Plus Data
3.3.2 Supplementary service abbreviations
For the purposes of this ETS, the following Supplementary Service abbreviations apply:
BIC Barring of Incoming Calls
CFB Call Forwarding on Busy
CFNRy Call Forwarding on No Reply
CFNRc Call Forwarding on Not Reachable
CFU Call Forwarding Unconditional
CR Call Report
4 SS-CR Stage 2 Specifications
4.1 Functional model
4.1.1 Functional model description
The functional model shall comprise the following functional entities (FEs) for Individual Calls:
- FE1 Originating SS-CR Served user FE;
- FE21 Originating SS-CR Controlling FE;
- FE25 Terminating SS-CR Controlling FE;
- FE25`New Terminating SS-CR Controlling FE;
- FE5 Terminating SS-CR Affected user FE.
NOTE 1: FE25' exists only in case of call restoration.
NOTE 2: FE25' has the same functions as FE25; it acts as the Terminating SS-CR Controlling
FE in the case where FE5 has migrated to another location.
The following functional relationships shall exist between these FEs for Individual Calls:
- ra between FE1 and FE21;
- rb between either between FE21 and FE25 or FE21 and FE25';
- rc between FE25 and FE5.
Figure 1 shows these FEs and relationships.
Served User Affected User
rc
ra rb
FE5
FE1 FE21 FE25
Figure 1: Functional model for SS-CR individual call

Page 10
ETS 300 392-11-2: September 2000
4.1.2 Description of the functional entities
4.1.2.1 Originating SS-CR served user FE, FE1
The FE that serves the served user (A) that invokes the call report to busy/no reply/not reachable
subscriber supplementary service (SS-CR).
4.1.2.2 Originating SS-CR controlling FE, FE21
The FE within the
...