SIST ETS 300 392-10-20 E1:2003

• Abstract:

  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

• 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: T-172-1A
• Ref Project: ETSI ETS 300 392-10-20 ed.1 (1996-04) - Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 20: Discreet listening

SIST ETS 300 392-10-20 E1:2003 is the Slovenian adoption of ETS 300 392-10-20 Edition 1 for Terrestrial Trunked Radio (TETRA) Voice plus Data (V+D). It specifies the stage 1 description of the Discreet Listening (DL) supplementary service, including what the service allows, how it is provided and activated, and how it behaves with other TETRA supplementary services. The document is for people who need a service-level definition for TETRA networks, such as operators, service providers, and system implementers.

What does SIST ETS 300 392-10-20 E1:2003 specify?

SIST ETS 300 392-10-20 E1:2003 specifies the stage 1 specification of Discreet Listening (DL) for TETRA. Stage 1 is written from the user point of view, so it describes the service itself, the expected procedures, and the service interactions, rather than the detailed human interface.

The scope is limited to the DL supplementary service in TETRA Voice plus Data (V+D). It excludes charging principles and does not cover the details of the human interface itself.

The document is organized into these main clauses:

• Scope
• Normative references
• Definitions and abbreviations
• SS-DL stage 1 specification, including description, procedures, interactions, inter-working considerations, and an overall SDL model

It also includes a figure showing the overall Specification and Description Language (SDL) behavior of SS-DL.

What are the key requirements of SIST ETS 300 392-10-20 E1:2003?

SIST ETS 300 392-10-20 E1:2003 defines how DL works in practice, who may use it, what information must be supplied, and how the network responds. The main points are about authorization, activation, monitoring, and the way the service behaves when calls are present or absent.

Discreet listening is an authorized monitoring service

Clause 4.1.1 says DL lets an authorized user listen to one or more communications between TETRA subscribers, which may be Mobile Station (MS) or Line Station (LS), without any indication to the monitored users. The monitoring party is told the identities of the talking parties. In practice, this means the service must be discreet from the monitored call participants while still identifying the call context to the monitoring user.

The service applies to speech teleservices and bearer services

Clause 4.1.2 limits DL to all speech TETRA teleservices and bearer services. For implementers, this means the service is not a general-purpose feature for every TETRA service type, but is tied to speech-related service use.

Provisioning requires talk group and basic service information

Clause 4.2.1 says DL is provided by prior arrangement with the service provider. The served user must supply the talk group to be monitored and the basic service to which DL applies, for example clear speech group call. The talk group must be checked to make sure it is within the user’s jurisdiction and allowed number range. This matters because provisioning depends on authorization and accurate numbering before the service is enabled.

Activation, deactivation, and interrogation are controlled by the network

Clause 4.2.2.1.1 states that DL can be activated for a teleservice only if it is registered for that teleservice, and it may be activated per call or permanently by the network at the user’s request. If no basic service is named, the document treats that as all services.

Clause 4.2.2.1.2 says deactivation can be requested by the monitoring party or by the operator. Clause 4.2.2.1.5 requires the Switching and Management Infrastructure (SwMI) to support interrogation on a per number basis, either for all basic services or for a user-specified basic service. The response may tell the user whether DL is active or inactive, which talk groups and basic services are covered, and whether there are calls in progress. In practice, this gives operators a clear control and status model for the service.

The network decides when monitoring is attached to a call

Clause 4.2.2.2.1 says the monitoring party activates the service when an appropriate call is in progress, or the network can invoke it when the service is permanently activated and a call is set up. If an appropriate communication is already running, the network includes the monitoring party. If not, the network waits until such a communication starts unless told otherwise. Once a suitable call appears, the monitoring party is informed and may be connected. This means DL can be used either reactively on an existing call or automatically when a matching call begins.

Optional functions include forced release and intrusion

Clauses 4.2.2.2.2 and 4.2.2.2.3 describe implementation options for forced release and intrusion. Forced release lets the monitoring party clear the call, and intrusion lets the monitoring party enter the ongoing conversation. These are optional capabilities, so they are implementation choices rather than universal requirements.

The standard lists rejection causes and interaction rules

Clause 4.2.3 gives example causes for unsuccessful activation, deactivation, registration, and interrogation, such as invalid or unauthorized talk groups, insufficient information, or service not subscribed to. Clause 4.3 states that DL has no interaction with many other supplementary services, including CLIP, COLP, CLIR, Call Report (CR), Talking Party Identification (TPI), several call forwarding services, and Dynamic Group Number Assignment (DGNA). It also says Call Authorized by Dispatcher (CAD) must not interact with DL, and that the service provider has to resolve any conflict if both are registered for one user. For Call Waiting (CW), the monitoring party should be informed of incoming calls waiting for that user.

DL does not cross the intersystem interface

Clause 4.4 says discreet listening is not available across the intersystem interface. In practice, this limits the service to the local TETRA domain covered by the network.

What terms does SIST ETS 300 392-10-20 E1:2003 define?

• Bearer service - A telecommunication service that carries signals between user-network interfaces.
• Mobile Station (MS) - The mobile equipment grouping used to obtain TETRA services, including at least one Mobile Radio Stack (MRS).
• Monitoring party - The authorized user who requests discreet listening.
• Supplementary Service (SS) - A service that modifies or supplements a bearer service or teleservice and is not offered alone.
• Switching And Management Infrastructure (SwMI) - The TETRA network equipment, except subscriber terminals, that lets terminals communicate through the network.
• Talk group - The TETRA users, terminals, or gateways between which communication is to be monitored.
• Teleservice - A telecommunications service that includes the terminal functions needed for communication between users according to agreed protocols.
• MS and SwMI are the abbreviations most often used in the procedures, so they matter when reading activation, monitoring, and network behavior clauses.

Who uses SIST ETS 300 392-10-20 E1:2003?

SIST ETS 300 392-10-20 E1:2003 is used by TETRA service providers and network operators who provision and control supplementary services. It is also used by system designers and implementers who need to build the network behavior for DL, including activation, interrogation, and interaction handling.

The document is relevant where TETRA networks serve organizations that use monitored communications, including shared-user environments mentioned in the registration procedure, such as police, ambulance, and private individuals. Quality and test teams can also use it as the service-level basis for checking whether the network responds correctly to requests and call conditions.

What changed in SIST ETS 300 392-10-20 E1:2003 from the previous edition?

SIST ETS 300 392-10-20 E1:2003 is identical to ETS 300 392-10-20 Edition 1.

Which standards are used with SIST ETS 300 392-10-20 E1:2003?

• CCITT Recommendation I.130 - Used for the method for characterizing telecommunication services supported by an ISDN and network capabilities of an ISDN.
• ITU-T Recommendation Z.100 - Used for the Specification and Description Language (SDL) that appears in the overall service model.

What does the SIST ETS 300 392-10-20 E1:2003 document contain?

The document contains the service definition, procedures, interaction rules, and a dynamic SDL model for SS-DL. Figure 1 provides the overall SDL behavior of the network for the service, shown in four sheets.

Clause 4.2 gives the operational procedures for provision, activation, deactivation, interrogation, and exceptional outcomes. Clause 4.3 lists interactions with other supplementary services, which is useful for implementation and integration work.

The text also includes the definition and abbreviation lists needed to read the service description correctly. For engineers and testers, the most practical parts are the call-related procedures, the rejection causes, and the SDL flow that shows how the network is expected to behave when a monitoring request meets an active or pending communication.

SLOVENSKI STANDARD
01-december-2003
Radijska oprema in sistemi (RES) - Vseevropski prizemni snopovni radio (TETRA) -
Govor in podatki (V+D) - 10. del: Dopolnilne storitve stopnje 1 - 10-20. del:
Nezaznavno poslušanje
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary
services stage 1; Sub-part 20: Discreet listening
Ta slovenski standard je istoveten z: ETS 300 392-10-20 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 300 392-10-20
TELECOMMUNICATION April 1996
STANDARD
Source: ETSI TC-RES Reference: DE/RES-06001-10-20
ICS: 33.020, 33.060.50
Key words: TETRA, V+D
Radio Equipment and Systems (RES);
Trans-European Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 10: Supplementary services stage 1;
Part 10-20: Discreet listening
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
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
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 1996. All rights reserved.

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ETS 300 392-10-20: April 1996
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 Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 392-10-20: April 1996
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .7
3.1 Definitions .7
3.2 Abbreviations .8
3.2.1 General abbreviations .8
3.2.2 Supplementary service abbreviations .8
4 SS-DL stage 1 specification .9
4.1 Description.9
4.1.1 General description .9
4.1.2 Qualifications on applicability to telecommunication services.9
4.2 Procedures.9
4.2.1 Provision/Withdrawal.9
4.2.2 Normal procedures.9
4.2.2.1 Activation, Deactivation, Definition, Registration,
Interrogation, Cancellation.9
4.2.2.1.1 Activation .9
4.2.2.1.2 Deactivation .10
4.2.2.1.3 Definition.10
4.2.2.1.4 Registration.10
4.2.2.1.5 Interrogation.10
4.2.2.1.6 Cancellation .10
4.2.2.2 Invocation and operation .10
4.2.2.2.1 Basic operation .10
4.2.2.2.2 Forced release.11
4.2.2.2.3 Intrusion .11
4.2.3 Exceptional procedures.11
4.2.3.1 Activation, Deactivation, Definition, Registration,
Interrogation, Cancellation.11
4.2.3.1.1 Activation .11
4.2.3.1.2 Deactivation .11
4.2.3.1.3 Definition.11
4.2.3.1.4 Registration.11
4.2.3.1.5 Interrogation.12
4.2.3.1.6 Cancellation .12
4.2.3.2 Invocation and operation .12
4.3 Interactions with other supplementary services.12
4.3.1 Calling Line Identification Presentation (CLIP).12
4.3.2 Connected Line Identification Presentation (COLP).12
4.3.3 Calling/Connected Line Identification Restriction (CLIR) .12
4.3.4 Call Report (CR).12
4.3.5 Talking Party Identification (TIP) .12
4.3.6 Call Forwarding Unconditional (CFU).12
4.3.7 Call Forwarding on Busy (CFB).12
4.3.8 Call Forwarding on No Reply (CFNRy) .12
4.3.9 Call Forwarding on Not Reachable (CFNR).12
4.3.10 List Search Call (LSC).13
4.3.11 Call Authorized by Dispatcher (CAD) .13
4.3.12 Short Number Addressing (SNA) .13
4.3.13 Area Selection (AS).13
4.3.14 Access Priority (AP) .13
4.3.15 Priority Call (PC).13

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ETS 300 392-10-20: April 1996
4.3.16 Call Waiting (CW). 13
4.3.17 Call Hold (HOLD). 13
4.3.18 Automatic call completion. 13
4.3.19 Late Entry (LE). 13
4.3.20 Transfer of Control (TC) . 13
4.3.21 Pre-emptive Priority Call (PPC) . 13
4.3.22 Include Call (IC) . 13
4.3.23 Advice of Charge (AC). 13
4.3.24 Barring of Outgoing Calls (BOC) . 14
4.3.25 Barring of Incoming Calls (BIC) . 14
4.3.26 Discreet Listening (DL) . 14
4.3.27 Ambience Listening (AL). 14
4.3.28 Dynamic Group Number Assignment (DGNA) . 14
4.4 Inter-working considerations . 14
4.5 Overall SDL. 15
History. 19

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ETS 300 392-10-20: April 1996
Foreword
This European Telecommunication Standard (ETS) has been produced by the Radio Equipment and
Systems (RES) Technical Committee 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: "Inter-working", (DE/RES-06001-3).
Part 4: "Gateways", (DE/RES-06001-4).
Part 5: "Terminal equipment interface", (DE/RES-06001-5).
Part 6: "Line connected stations", (DE/RES-06001-6).
Part 7: "Security".
Part 8: "Management services", (DE/RES-06001-8).
Part 9: "Performance objectives", (DE/RES-06001-9).
Part 10: "Supplementary services stage 1".
Part 11: "Supplementary services stage 2", (DE/RES-06001-11).
Part 12: "Supplementary services stage 3", (DE/RES-06001-12).
Part 13: "SDL Model of the Air Interface", (DE/RES-06001-13).
Part 14: "PICS Proforma", (DE/RES-06001-14).
Part 15: "Inter-working - Extended Operations", (DE/RES-06001-15).
Part 16: "Gateways for Supplementary Services", (DE/RES-06001-16).
Transposition dates
Date of adoption of this ETS: 1 March 1996
Date of latest announcement of this ETS (doa): 31 July 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 January 1997
Date of withdrawal of any conflicting National Standard (dow): 31 January 1997

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ETS 300 392-10-20: April 1996
1 Scope
This European Telecommunication Standard (ETS) defines the stage 1 specifications of the Discreet
Listening (DL) supplementary service for the Trans-European Trunked RAdio (TETRA) as provided by
European operators. Stage 1 is an overall service description from the users point of view but does not
deal with the details of the human interface itself.
This ETS specifies the service description of the supplementary service and the procedures to be
expected with successful and unsuccessful outcomes. In addition this ETS specifies the interactions with
other TETRA supplementary services and inter-working considerations.
Charging principles are outside the scope of this ETS.
The DL supplementary service shall enable an authorized user to listen to one or more communications
between TETRA subscribers (Mobile Station (MS) or Line Station (LS)) without any indication to any user
that the communication is being monitored.
2 Normative references
This ETS incorporates, by dated or 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): "Specification and Description Language
(SDL)".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
bearer service: A type of telecommunication service that provides the capability for the transmission of
signals between user-network interfaces.
Mobile Station (MS): A 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).
monitoring party: The authorised user who requests the discreet listening.
Supplementary Service (SS): A 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.
talk group: Those TETRA users, terminals or gateways between which any communication shall be
monitored.
teleservice: A type of telecommunications service that provides the complete capability, including
terminal equipment functions, for communication between users according to agreed protocols.

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ETS 300 392-10-20: April 1996
3.2 Abbreviations
3.2.1 General abbreviations
For the purposes of this ETS, the following general abbreviations apply:
GTSI Group TETRA Subscriber Identity
ISDN Integrated Services Digital Network
ITSI Individual TETRA Subscriber Identity
LS Line Station
MS Mobile Station
MRS Mobile radio Stack
DL (Functional) Specification and Description Language
SS Supplementary Service
NOTE: The abbreviation SS is only used when referring to a specific supplementary service.
SwMI Switching and Management Infrastructure
TETRA Trans-European Trunked RAdio
3.2.2 Supplementary service abbreviations
For the purposes of this ETS, the following supplementary service abbreviations apply:
...