Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 12: Call Hold (CH)

Analysis of predicted needs for digital trunked systems in Europe; definition of services to be provided; analysis of spectrum req ments; characteristics of relevant interfaces Contains: TETRA 03.60 to 03.85

Prizemni snopovni radio (TETRA) – Govor in podatki (V+D) – 10. del: Dopolnilne storitve stopnje 1 – 12. poddel: Zadržanje klica (CH)

General Information

Status
Published
Publication Date
30-Nov-2003
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Dec-2003
Due Date
01-Dec-2003
Completion Date
01-Dec-2003
Mandate

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SLOVENSKI STANDARD
SIST ETS 300 392-10-12 E2:2003
01-december-2003
Prizemni snopovni radio (TETRA) – Govor in podatki (V+D) – 10. del: Dopolnilne
storitve stopnje 1 – 12. poddel: Zadržanje klica (CH)
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary
services stage 1; Sub-part 12: Call Hold (CH)
Ta slovenski standard je istoveten z: ETS 300 392-10-12 Edition 2
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
SIST ETS 300 392-10-12 E2:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 392-10-12 E2:2003

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SIST ETS 300 392-10-12 E2:2003
EUROPEAN ETS 300 392-10-12
TELECOMMUNICATION February 2000
STANDARD Second Edition
Source: TETRA Reference: RE/TETRA-03001-10-12
ICS: 33.020
Key words: data, HOLD, radio, speech, stage 1, supplementary service, TETRA, V+D
Terrestrial Trunked Radio (TETRA);
VoiceplusData(V+D);
Part 10: Supplementary services stage 1;
Sub-part 12: Call Hold (CH)
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: secretariat@etsi.fr - http://www.etsi.org
Tel.:+33492944200- Fax:+33493654716
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.

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ETS 300 392-10-12: February 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.

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ETS 300 392-10-12: February 2000
Contents
Foreword.5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .7
3.1 Definitions .7
3.2 Abbreviations .8
4 SS-HOLD stage 1 specification.8
4.1 Description .8
4.1.1 General description .8
4.1.2 Qualifications on applicability to telecommunication services .8
4.2 Procedures.8
4.2.1 Provision/Withdrawal.8
4.2.2 Normal procedures.8
4.2.2.1 Activation/Deactivation, Definition, Registration,
Cancellation, Interrogation.8
4.2.2.1.1 Activation/Deactivation.8
4.2.2.1.2 Definition .8
4.2.2.1.3 Registration.8
4.2.2.1.4 Cancellation .9
4.2.2.1.5 Interrogation.9
4.2.2.2 Invocation and operation.9
4.2.2.2.1 Hold request.9
4.2.2.2.2 Follow-up.9
4.2.3 Exceptional procedures.10
4.2.3.1 Activation/Deactivation, definition, registration,
cancellation, interrogation.10
4.2.3.1.1 Activation/Deactivation.10
4.2.3.1.2 Definition .10
4.2.3.1.3 Registration.10
4.2.3.1.4 Cancellation .10
4.2.3.1.5 Interrogation.10
4.2.3.2 Invocation.10
4.2.3.3 Operation .11
4.2.3.3.1 Call on hold cleared by the served
user .11
4.2.3.3.2 Call cleared by the network.11
4.2.3.3.3 Call on hold cleared by the affected
user .11
4.2.3.3.4 Location change.11
4.3 Interactions with other supplementary services .11
4.3.1 Calling line identification presentation .11
4.3.2 Connected line identification presentation.11
4.3.3 Calling/Connected line identification restriction.11
4.3.4 Call report.11
4.3.5 Talking party identification.11
4.3.6 Call forwarding unconditional .12
4.3.7 Call forwarding on busy.12
4.3.8 Call forwarding on no reply.12
4.3.9 Call forwarding on not reachable.12
4.3.10 List search call.12
4.3.11 Call authorized by dispatcher .12
4.3.12 Short number addressing .12
4.3.13 Area selection.12

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ETS 300 392-10-12: February 2000
4.3.14 Access priority call . 12
4.3.15 Priority call. 13
4.3.16 Call waiting. 13
4.3.17 Call completion to busy subscriber . 13
4.3.18 Late entry. 13
4.3.19 Transfer of control. 13
4.3.20 Pre-emptive priority call . 13
4.3.21 Include call. 13
4.3.22 Advice of charge . 13
4.3.23 Barring of outgoing calls . 14
4.3.24 Barring of incoming calls. 14
4.3.25 Discreet listening. 14
4.3.26 Ambience listening. 14
4.3.27 Dynamic group number assignment. 14
4.3.28 Call completion on no reply. 14
4.3.29 Call retention. 14
4.4 Inter-working considerations . 15
4.4.1 Inter-working between different TETRA networks . 15
4.4.2 Inter-working with external networks . 15
4.5 Overall SDL . 15
History. 19

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ETS 300 392-10-12: February 2000
Foreword
This European Telecommunication Standard (ETS) has been produced by the Terrestrial Trunked Radio
(TETRA) Project of the European Telecommunications Standards Institute (ETSI).
This ETS is a multi-part standard and will consist 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: 18 February 2000
Date of latest announcement of this ETS (doa):
31 May 2000
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 November 2000
Date of withdrawal of any conflicting National Standard (dow): 30 November 2000

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ETS 300 392-10-12: February 2000
1 Scope
This European Telecommunication Standard (ETS) defines the stage 1 description of the call hold
supplementary service (SS-HOLD) for the Terrestrial Trunked RAdio (TETRA) as provided by European
operators. The stage 1 description is an overall service description from the user point of view but does
not deal with the details of the human interface itself (see CCITT Recommendation I.130 [1]).
SS-HOLD enables a user to interrupt communication on an existing individual call and then subsequently,
if desired, re-establish communication.
This ETS specifies the service description of the supplementary service and the procedures to be
expected with successful and unsuccessful outcomes. In addition the ETS specifies the interactions with
other TETRA supplementary services and inter-working considerations.
Charging principles are outside the scope of this ETS.
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 300 392-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data
(V+D); Part 2: Air Interface (AI)".
[4] ETSI ETS 300 392-9: "Terrestrial Trunked Radio (TETRA); Voice plus Data
(V+D); Part 9: General requirements for supplementary services".
[5] ETSI ETS 300 392-4-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data
(V+D); Part 4: Gateways basic operation; Sub-part 2: Integrated Services Digital
Network (ISDN) gateway".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the definitions of ETS 300 392-9 [4] apply, except for those of affected user
and served user, which are given below:
affected user: after SS-HOLD has been invoked by one of the two parties in an individual call, the other
party in that call.
NOTE: If both parties in an individual call invoke SS-HOLD, both will be affected user for
SS-HOLD invocation by the other party.
served user: user who may invoke the supplementary service (i.e. request that a call be put on hold).

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ETS 300 392-10-12: February 2000
3.2 Abbreviations
For the purposes of this ETS, the following general abbreviations apply:
HOLD Call Hold
ISDN Integrated Services Digital Network
MS Mobile Station
SDL (Functional) Specification and Description Language
SS Supplementary Service
NOTE: The abbreviation SS is only used when referring to a specific supplementary service.
TETRA Terrestrial Trunked RAdio
4 SS-HOLD stage 1 specification
4.1 Description
4.1.1 General description
The call hold supplementary service (SS-HOLD) enables a user to interrupt an existing individual call and
then subsequently retrieve that call (in re-establishing communication), unless it has been cleared.
4.1.2 Qualifications on applicability to telecommunication services
This supplementary service shall be applicable to all TETRA circuit mode individual teleservices and
bearer services.
4.2 Procedures
4.2.1 Provision/Withdrawal
The provision of SS-HOLD shall be either general for all (TETRA) individual subscribers or on a per
individual subscriber basis.
The supplementary service shall be withdrawn by the service provider:
- for administrative purposes; or
- at the request of the served user, if individually provided.
No specific information shall then be given to the subscribers by the network.
4.2.2 Normal procedures
4.2.2.1 Activation/Deactivation, Definition, Registration, Cancellation, Interrogation
4.2.2.1.1 Activation/Deactivation
The service shall be activated upon provision and deactivated upon withdrawal.
4.2.2.1.2 Definition
Void.
4.2.2.1.3 Registration
Void.

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ETS 300 392-10-12: February 2000
4.2.2.1.4 Cancellation
Void.
4.2.2.1.5 Interrogation
The network and the served user may support the interrogation procedure, initiated by the served user to
inform him about:
- the number of calls put on hold by that user;
- the calls presently on hold.
4.2.2.2 Invocation and operation
4.2.2.2.1 Hold request
When the served user invokes SS-HOLD during an individual call, after it has been established, and the
network accepts that invocation, the call shall be interrupted. The network shall inform the served user
about the success of that invocation. It shall also notify the affected user about it.
If the served user uses a radio access to the network (i.e. he is equipped with mobile terminal equipment),
the corresponding air interface resource used for the call traffic may be released. If the affected user uses
a radio access to the network, it is an implementation matter whether the network releases or not the
corresponding air interface resource used for the call traffic (on the affected user side).
The served user may be either of the two users participating in the individual call. If the supplementary
service is provided to both users, each one can put the call on hold independently of the other.
The served user may be able to invoke SS-HOLD for more than one individual call. However the
maximum number of held calls at any one time per subscriber shall be a network option.
4.2.2.2.2 Follow-up
When the served user has successfully invoked SS-HOLD he shall still be considered by the network as
being in the basic call state: call active. The same shall apply for the affected user.
NOTE 1: More generally, except if the network releases the air interface resource used for the
call traffic on the affected user side, no change happens in the basic (individual) call
for the affected user when it is put on hold for the served user.
After he has successfully invoked SS-HOLD, the served user shall be able to make another request to the
network in order to:
- retrieve that call from hold or any other call which is on hold;
- originate a new call;
- establish connection to an incoming call, e.g. a waiting call.
If the network can satisfy the request (i.e., in the case of mobile terminal equipment, air interface and
other necessary resources are available), it shall re-establish the call and acknowledge that request in
in
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