CLC/TS 50459-3:2005

SLOVENSKI SIST-TS CLC/TS 50459-3:2006

STANDARD
januar 2006
Železniške naprave – Komunikacijski, signalni in procesni sistemi – Evropski
sistem za vodenje železniškega prometa – Vmesnik človek-stroj – 3. del:
Ergonomska razporeditev informacij ERTMS/ETCS/GSM-R
(istoveten CLC/TS 50459-3:2005)
Railway applications – Communication, signalling and processing systems –
European Rail Traffic Management System – Driver-Machine Interface – Part 3:
Ergonomic arrangements of ERTMS/GSM-R information
ICS 03.220.30; 13.180; 35.240.60 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

TECHNICAL SPECIFICATION CLC/TS 50459-3
SPECIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION September 2005

ICS 03.220.30; 13.180; 35.240.60

English version
Railway applications –
Communication, signalling and processing systems –
European Rail Traffic Management System –
Driver-Machine Interface
Part 3: Ergonomic arrangements of ERTMS/GSM-R information

Applications ferroviaires – Bahnanwendungen –
Systèmes de signalisation, de Telekommunikationstechnik, Signal-
télécommunications et de traitement – technik und Datenverarbeitungssysteme –
Système européen de gestion du trafic Europäisches Leitsystem für den
ferroviaire – Schienenverkehr –
Interface de conduite Mensch-Maschine Schnittstelle
Partie 3: Dispositions ergonomiques Teil 3: Ergonomische Anordnung
des informations ERTMS/GSM-R der ERTMS/GSM-R Informationen

This Technical Specification was approved by CENELEC on 2005-05-07.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. CLC/TS 50459-3:2005 E

Foreword
This Technical Specification was prepared by SC 9XA, Communication, signalling and processing systems,
of Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways.
The text of the draft was submitted to the vote and was approved by CENELEC as CLC/TS 50459-3 on
2005-05-07.
The following date was fixed:
– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2005-11-07
This Technical Specification has been prepared under mandates M/024 and M/334 given to CENELEC by
the European Commission and the European Free Trade Association.

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Contents
Page
Introduction.5
1 Scope.6
2 Normative references.6
3 Terms, definitions and abbreviated terms .7
3.1 Definitions.7
3.2 Symbols and abbreviated terms.7
4 General DMI-related principles.7
4.1 General ergonomic principles.7
4.2 DMI possibilities.8
4.3 Hardware .8
4.4 Task structure.8
4.5 Flashing.9
4.6 Sounds.9
4.7 Lists.10
5 GSM-R functions shown on the integrated DMI.10
5.1 Introduction.10
5.2 General functions .11
5.3 Call-related functions: outgoing.15
5.4 Call-related functions: incoming.27
5.5 Other call related functions.35
5.6 Special functions not required directly by GSM-R.42
5.7 Summary of key sequences .42
Annex A (informative) Examples of DMI solutions .44
A.1 Standalone solution on a touch screen device.44
A.2 Combined / integrated solution on a touch screen device .45
A.3 Vertical standalone solution with soft keys.46
A.4 Horizontal standalone solution with soft keys .47
Bibliography.48
Figure 1 — Areas of the DMI Display.9
Figure 2 — Register Train Running Number.12
Figure 3 — Loss of Radio Network .14
Figure 4 — Window with no call activity.15
Figure 5 — Call status information during outgoing call to Primary Controller .15
Figure 6 — Call Primary Controller .17
Figure 7 — Group Call to other drivers in the same area .18
Figure 8 — Group Call to Group 846 .19
Figure 9 — Broadcast Call to Group 846 .20
Figure 10 — Areas on the second level .21
Figure 11 — Selecting other drivers on train.22
Figure 12 — Drivers connected in a Multi-party Call.22
Figure 13 — Calling a stored number .23
Figure 14 — Call a valid number.24
Figure 15 — Call the last contacted address .25
Figure 16 — Accessing train staff menu .26
Figure 17 — Selection of member of staff.26
Figure 18 — Receiving a point-to-point call .27
Figure 19 — Receiving a Broadcast Call .28
Figure 20 — Receiving a Group Call.29
Figure 21 — Receiving a Railway Emergency Call.30
Figure 22 — Receiving a text message .31
Figure 23 — Multi-party call.32
Figure 24 — Put call on hold and forward call.33
Figure 25 — Answer incoming call that is waiting.34

Figure 26 — Initiate Public Address call.35
Figure 27 — Initiate Intercom .36
Figure 28 — Activate GSM-R Shunting Group Number 20.36
Figure 29 — Selecting a language .37
Figure 30 — Select Direct Mode Radio Channel 3 .38
Figure 31 — Enter GSM-R Shunting Mode.39
Figure 32 — Forward call to hand-portable.40
Figure 33 — Third level menu .41
Figure A.1 — Basic functions on first level.44
Figure A.2 — Last calls overview on second level .44
Figure A.3 — Secondary functions on third level .44
Figure A.4 — Free dial window on third level.44
Figure A.5 — Basic functions on first level.45
Figure A.6 — Last calls overview on second level .45
Figure A.7 — Secondary functions on third level .45
Figure A.8 — Free dial window on third level.45
Figure A.9 — Vertical Standalone device.46
Figure A.10 — Horizontal standalone device .47
Table 1 — Description of functions used in each area.10
Table 2 — Summary of Key Sequences .42

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Introduction
This Technical Specification forms Part 3 of a series, the other parts being:
CLC/TS 50459-1 for ergonomic principles for the presentation of ERTMS/ETCS/GSM-R information
CLC/TS 50459-2, for ergonomic arrangements of ERTMS/ETCS information
CLC/TS 50459-4 for data entry procedure for ERTMS/ETCS/GSM-R
CLC/TS 50459-5 for symbols for ERTMS/ETCS/GSM-R
CLC/TS 50459-6 for audible information for ERTMS/ETCS/GSM-R
These Technical Specifications contain the ergonomic arrangements of information on the ERTMS DMI
Display. Most items are illustrated with an example.

1 Scope
This Technical Specification describes from an ergonomic point of view how ERTMS information shall be
arranged and displayed. This Technical Specification describes more ergonomic details than currently
provided by the ERTMS/ETCS/GSM-R specifications.
This Technical Specification defines the ergonomics for the Driver-Machine Interface (DMI) for the
ERTMS/ETCS Train Control System, and for the integrated ERTMS/GSM-R Train Control and Train
Radio Systems, and for the stand alone ERTMS/GSM-R Train Radio Systems and for other technical
systems currently provided on the engines.
The ergonomics covers the
 general arrangements (dialogue structure, sequences, layout philosophy, colour philosophy),
 symbols,
 audible information,
 data entry arrangements.
The aims of the ERTMS/ETCS/GSM-R Train Control and Train Radio Systems are standardised systems
facilitating interoperable movement of trains and permitting economies of scale in procurement and
operations. The objective of this Technical Specification is to define the minimum requirements on the
DMI that are necessary to enable these objectives to be achieved. Hence the Technical Specification is
limited to ergonomic considerations and does not define the technology to be used for the implementation.
The reasons for defining the ergonomics of the DMI are as follows:
 achieving harmonised and coherent presentation for ERTMS/ETCS and STM information. Given the
large number of STM’s requiring the use the ERTMS/ETCS DMI, only a harmonised approach is
feasible;
 defining Driver-Machine Interface ergonomics that is compatible with agreed interoperable ERTMS
specifications;
 to reduce the risk of incorrect operation by a driver working with different trains fitted with
ERTMS/ETCS and ERTMS/GSM-R;
 facilitating train operation with a unified ergonomics, hence reducing the cost of driver training.
This Technical Specification is applicable on all trains fitted with the ERTMS/ETCS and also for trains
fitted with train radio (GSM-R) DMI.
The scope of Part 3 of the Technical Specification CLC/TS 50459 series is to define ergonomic
arrangements of ERTMS/GSM-R information only.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
Council Directive 96/48/EC of 23 July 1996 on the interoperability of the trans-European high-speed rail
system, Official Journal L 235 , 17/09/1996 P. 0006 – 0024
CLC/TS 50459-1, Railways applications – Communication, signalling and processing systems –
European Rail Traffic Management System – Driver-Machine Interface – Part 1: Ergonomic principles for
the presentation of ERTMS/ETCS/GSM-R information

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CLC/TS 50459-2, Railways applications – Communication, signalling and processing systems - European
Rail Traffic Management System - Driver-Machine Interface - Part 2: Ergonomic arrangements of
ERTMS/ETCS information
CLC/TS 50459-4, Railways applications – Communication, signalling and processing systems - European
Rail Traffic Management System - Driver-Machine Interface - Part 4: Data entry for the
ERTMS/ETCS/GSM-R systems
CLC/TS 50459-5, Railways applications – Communication, signalling and processing systems - European
Rail Traffic Management System - Driver-Machine Interface - Part 5: Symbols
CLC/TS 50459-6, Railways applications – Communication, signalling and processing systems - European
Rail Traffic Management System - Driver-Machine Interface - Part 6: Audible information
UIC 651, Layout of driver's cabs in locomotives, railcars, multiple-unit trains and driving trailers
3 Terms, definitions and abbreviated terms
3.1 Definitions
For the purposes of this document, the terms and definitions given in CLC/TS 50459-1 apply.
3.2 Symbols and abbreviated terms
PA Public Address
PTT Push To Talk
NOTE For practical reasons, in this document GSM-R is used instead of ERTMS/GSM-R.
4 General DMI-related principles
4.1 General ergonomic principles
The GSM-R DMI shall follow the main ergonomic principles as described in CLC/TS 50459 -1.
All ERTMS/GSM-R DMI procedures and layout principles shall be consistent with the ERTMS/ETCS DMI
and the ERTMS/ETCS DMI philosophy as far as it concerns the integrated ERTMS/ETCS/GSM-R DMI.
When there is a GSM-R call, this shall not disturb the ERTMS/ETCS information.
When there is a call to other on-train users/devices using GSM-R this, shall not disturb the ERTMS/ETCS
information. This requirement is applicable to the integrated option only.
The principle for navigation for the integrated ERTMS/ETCS/GSM-R DMI shall be consistent with the
rules defined in CLC/TS 50459-1. For the stand alone GSM-R DMI it is strongly recommended to have
the same consistency.
Any additional requirements that are specific to GSM-R are defined in this clause.

4.2 DMI possibilities
The GSM-R DMI may be a stand alone DMI (one device for GSM-R only) or an integrated DMI (one
screen for GSM-R and ETCS).
For the train radio DMI not integrated with ERTMS/ETCS, the following requirements apply in addition to
those given in CLC/TS 50459 -1, 4.1.1.2:
 for both national and international trains, symbols should be used for indicators and buttons, however
text is acceptable as an alternative provided that the mandatory requirements of this Technical
Specification are met;
 if symbols are to be used, then these symbols shall conform to the specifications given in
CLC/TS 50459 -5;
 if text is used for an international train, the driver shall be able to select the language appropriate to
the country in which the train is operating and appropriate to his own needs.
When using a monochrome display for a standalone GSM-R DMI a similar ergonomic approach to ETCS
shall be followed but without the use of colour.
4.3 Hardware
4.3.1 General
In the case of a radio DMI not integrated with ERTMS/ETCS, a monochrome full graphic display may be
implemented.
It should be possible to pickup and return the handset ‘blindly’ (from the driving position) and with one
hand.
GSM-R shall automatically detect that the handset is off the hook.
It should be possible for the railway to enable the drivers to change handsets between cabs.
As an alternative to a handset and loudspeaker, it should be possible for a radio to use a hands-free
microphone and loudspeaker. The hands-free microphone shall include a PTT button that is used when
the driver wants to speak during group calls.
4.3.2 Use of alternative layouts for the DMI
For all functions described above a different layout is possible if a stand alone DMI is used. Examples of
alternative graphical layouts are presented in Annex A to this document. It is also acceptable to use
textual layouts provided they meet the functional requirements.
4.4 Task structure
All GSM-R DMI’s have the same basic areas. Although position and dimensions of the GSM-R areas may
be slightly different, the areas visually should be identified as being the same.
GSM-R DMI’s shall have the following areas: input and monitoring. This is illustrated in Figure 1.
The monitoring area is covered by the same area as described in CLC/TS 50459-1 (i.e. area E). The
input area is the area F of CLC/TS 50459-1 and overlays for different menus and keyboards on areas D
and F (see CLC/TS 50459-1).
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Figure 1 — Areas of the DMI Display
For stand alone solutions other principles may be obtained.
The GSM-R DMI shall take into account that the position of the stand alone DMI can be left or right from
the driver.
Input areas (in the primary visual and reach field) should be closer to the driver than monitoring areas (in
the secondary visual and reach field). This requirement does not apply to the integrated option, because
the whole integrated DMI is in the primary field.
Unexpected information and ‘aide memoire’ should be clearly distinguished.
4.5 Flashing
Examples of GSM-R situations where flashing is appropriate are
 train number not entered and request for train number not acknowledged (yellow flashing frame),
 radio network not present. E16 Area is flashing (no acknowledgement is required).
4.6 Sounds
Sounds to be used are described in CLC/TS 50459-6. The reference to the sound numbers can also be
found in CLC/TS 50459-6.
Any sound is related to one or more status symbol as defined in CLC/TS 50459-5.

4.7 Lists
Presenting the choices in a vertical scrollable list should be used for the following GSM-R items:
 language selection;
 network selection;
 overview of recent calls;
 predefined telephone numbers;
 selection of Group numbers;
 selection of Shunting Group numbers.
5 GSM-R functions shown on the integrated DMI
5.1 Introduction
The following subclauses and figures illustrate the key functions of the proposed integrated GSM-R
Driver-Machine Interface.
Figure and text together explain how a function can be activated and how the user should perform the
navigation. For this purpose the following guidelines apply:
 areas in black show the relevant function together with all needed buttons for the navigation;
 areas in white show other possible active functions;
 areas in grey mark the rest of the interface not associated with the relevant function.
The coding in the pictures (e.g. F5, E14, G22 etc.) is used only for reference purposes. The codes G, H,
K and L are used for GSM-R functions only; the codes E and F are used in the same way as described in
CLC/TS 50459-2.
Table 1 — Description of functions used in each area
Code Description Code Description
E Monitoring H Navigation
F Input K Scroll lists
nd rd
G Menu on 2 and 3 level L Keyboard

It should be noted that for the integrated DMI used in the examples shown below, a touch screen device
for data entry is assumed.
Subclause 5.2 gives requirements of a more general nature. Starting with 5.3, a more detailed description
of functions and related requirements is given.
The descriptions below assume the use of a handset and loudspeaker. The mode of operation is
generally similar if a hands-free microphone is used in place of the handset.

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5.2 General functions
5.2.1 Switch DMI on/off
The on/off status of GSM-R shall be clearly indicated and visible during the operation of GSM-R.
The off-status of GSM-R should be visible by disabled buttons for the GSM-R functions.
The on/off status of the display used by GSM-R shall be clearly indicated.
When there is a technical link between ETCS and GSM-R, the latter shall be switched on automatically
when the first is switched on.
When the start up of GSM-R is linked to another system (e.g. ETCS), it also should be possible to switch
GSM-R on and off independently.
On an integrated DMI, showing the on/off status of GSM-R shall not interfere with basic ETCS information.
5.2.2 Select mobile radio network
The mobile radio network is normally selected automatically according to preferences stored within the
radio.
The mobile radio network chosen shall be shown to the driver (E16b).
If the mobile radio network is lost, this shall be indicated to the driver (see 5.2.12).
The driver shall be informed audibly and visually when there is an automatic change of mobile radio
network.
The driver should be informed when during start-up the system is looking for a mobile radio network but
has not found one yet.
It shall be possible for the driver to select another mobile radio network (if another mobile radio network is
available) from a list of mobile radio networks stored in the radio.
The driver shall be able to select the mobile radio network by using one of the data entry windows as
specified in CLC/TS 50459-4.
5.2.3 Register and de-register running number and on train users
The driver shall be able to register and de-register a train running number.
The driver shall be able to register and de-register on-train users.
The functions register and de-register running numbers and on-train users should be accessed via the
first level of the GSM-R DMI.
Figure 2 displays an example of Register Train Running Number.

Figure 2 — Register Train Running Number
EXAMPLE Register Train Running Number:
1) The function can be reached via E16a on the first level GSM-R. The procedure for
entering the data is achieved via a keyboard. The train running number must be entered
and activated.
2) Via H02 a list is shown to address who is going to be registered. If no user is selected
the list is shown by default. Those who have been registered already are presented as
disabled.
De-registering follows the procedure in reverse direction via E16a and H03.
5.2.4 Invoke supplementary services
It shall be possible for the driver to place a call on hold with a maximum of two actions.
It should be possible for the driver to place a call on hold with a single action.
The Hold button shall only be visible and be possible to activate when required.
It shall be possible for the driver to retrieve a call on hold with a maximum of two actions.
It should be possible for the driver to retrieve a call on hold with a single action.
It shall be possible for the driver to toggle between a held call and active call with a maximum of two
actions.
It should be possible for the driver to toggle between a held call and active call with a single action.
5.2.5 Invoke self test
No specific DMI requirements.
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5.2.6 Select language
The procedure for choosing language shall be identical to the ETCS procedure.
If GSM-R and ETCS are technically related, the language should be changed either via the ETCS
‘branch’ or via the GSM-R ‘branch’.
The choice for the language when GSM-R and ETCS are technically related should be possible via the
ETCS data input procedure and via the GSM-R procedure. When the language is changed in either one
of them the language in the other is changed as well.
When GSM-R and ETCS are technically related, both systems must have the same default language.
5.2.7 Adjust display settings
The procedure for adjusting display settings should be identical to the ERTMS/ETCS procedure as
described in CLC/TS 50459-1.
5.2.8 Adjust loudspeaker volume
The procedure for adjusting loudspeaker volume should be identical to the ERTMS/ETCS procedure as
described in CLC/TS 50459-1.
5.2.9 Status information
The status of a call shall be indicated. This indication can use text or symbols or a combination of both.
The symbols shall be in accordance with (CLC/TS 50459-5).
When a controller is handling a call other than the call of the driver, the driver should be informed about
that.
5.2.10 Information and functions available to the driver
The driver shall have the following information and functions independent of the status of a call:
 functional identity of connected party (for an outgoing call);
 functional identity of calling party (for an incoming call);
 the status of a call;
 see which (incoming) calls are queuing;
 the ability to break into the voice call of other on-train users by picking up the handset;
 the ability to terminate calls which he is entitled to terminate;
 ability to end a call not by hanging up the handset, but by using a button;
 radio network availability.
NOTE Other on-train users can include, for example, a conductor using the intercom to connect via the cab radio to a
signaller, an external call routed via the cab radio to the public address, etc.

5.2.11 Fall back
It should be possible to use a GSM-R DMI screen as fall back for another cab system DMI (e.g. a stand
alone ETCS DMI).
The GSM-R DMI should allow solutions for fall back for the DMI; e.g. change of DMI between cabs,
change of input from one screen to another, change of input device.
It should be possible for the railway to allow the drivers to change GSM-R DMI’s hardware between cabs.
It should be possible to direct GSM-R DMI output to a non GSM-R screen in the cab.
It should be possible to obtain GSM-R input from another input device (e.g., a touch screen or a frame
button input device).
5.2.12 Loss of radio network
Loss of radio network shall be indicated audibly and visually.
The text ‘No Network’ shall be displayed. The text ‘No Network’ shall be in the language selected by the
driver. In addition, a flashing frame shall surround the text for nominally 10 s. Sound R12 shall be used
when ‘No Network’ is initially displayed.
Figure 3 displays an example of loss of radio network

Figure 3 — Loss of Radio Network
EXAMPLE Loss of radio network:
1) E16b normally shows the name of the radio network.
2) In the absence of a radio network, E16b displays the text ‘No Network’.
3) In addition, a flashing frame surrounds E16b for nominally 10 s.

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5.3 Call-related functions: outgoing
5.3.1 Default, no actions
No actions of GSM-R user, monitoring of incoming calls and alarms is possible.
Figure 4 displays an example of no call activity.

Figure 4 — Window with no call activity
No actions of GSM-R user, monitoring of incoming calls and alarms is possible.
5.3.2 Status information
The driver shall be presented with status information relating to a call.
Figure 5 displays an example of status information during an outgoing call

Figure 5 — Call status information during outgoing call to Primary Controller

Possible status of E11/E12/E13 (see symbols in CLC/TS 50459-5)
 line ready (symbol 6.1),
 line not available (symbol 6.6),
 opening connection (symbol 6.2),
 waiting for connection (symbol 6.3),
 connection established (symbol 6.5),
 no connection (symbol 6.6),
 line busy (symbol 6.4),
 ringing (symbol 6.7 or 6.11),
 talking (symbol 6.13),
 busy (symbol 6.9),
 no answer (symbol 6.10),
 waiting (symbol 6.8),
 call ended (symbol 6.15),
 connection lost (symbol 6.14),
 call In Waiting (symbol 6.12).
In general (for most situations)
 E11: GSM-status driver,
 E12: GSM-status other train staff,
 E13: incoming call waiting, incoming emergency during group call, etc.,
 E14: hold,
 E15: hands free,
 E19/25: info display (e.g. phone number, message), also as second layer after activation E11, E12,
E13.
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5.3.3 Initiate call to controller
It shall be possible to call a responsible controller with one keystroke, e.g. on the first level of the interface.
Figure 6 displays an example of an outgoing call to a Primary Controller.

Figure 6 — Call Primary Controller
EXAMPLE Call Primary Controller:
1) After F6 (or F7 or F8 for other controllers) a Primary Controller is called (first level GSM-R).
2) A frame surrounds F6 (or F7 or F8 for other controllers) after activation. F6 (or F7 or F8 for other controllers)
displays the End Call symbol (symbol 6.16).
3) Initially E11 shows symbol 6.1. This is followed by symbols 6.2, 6.3, 6.5, 6.7 and 6.13.
4) The call is closed by replacing the handset or pressing F6 (or F7 or F8, depending which one was used to
activate the call).
5) After the call is closed, symbol 6.16 is removed and the frame surrounding F6 (or F7 or F8) is removed.
5.3.4 Initiate call other drivers in the same area
The driver shall be able to establish a Group Call to other drivers in the same area.
The GSM-R DMI shall remind the driver conspicuously when there is a need to press ‘push to talk’.
When the link becomes established (up-link), this should be presented very clearly to the driver sending a
group call.
It is recommended that the uplink should be reserved for the initiator of the call until the initiator has not
spoken for more than 2 s.
It is recommended that the uplink should be reserved for the initiator of the call for the first 5 s after
activation of the call.
Figure 7 displays an example of a Group Call with Railway Operation priority to all drivers in the same
area.
Figure 7 — Group Call to other drivers in the same area
EXAMPLE Group Call with Railway Operation priority to all drivers in the same area:
1) Group Call to Other Drivers in the Same Area should be permanently available on the first level via F9.
Other Group calls are established via F5, H02 and G21.
2) Possible status of E11/E12/E13 (see symbols in CLC/TS 50459-5):
3) Opening Group Call, Group call waiting, Group Call established, Group Call lost - Group Call ended, use
PTT
4) A frame surrounds F9 after activation. F9 displays the End Call symbol (symbol 6.16).
5) Initially E11 shows symbol 6.1. This is followed by symbols 7.1 and 7.4.
6) E12/E13 shows symbol 7.6 (Use PTT) when the call is connected.
7) If a request to talk was successful, the ‘Use PTT’ symbol is surrounded by a frame meaning “You can talk”.
Explanatory Text, if used, also changes to ‘You can talk’.
8) To end the call: activate F9 or replace the handset.
9) After the call is ended, the frame surrounding F9 is removed and symbol 6.16 is removed.
5.3.5 Initiate Group Call
The driver shall be able to establish a Group Call to a group of his choice.
The GSM-R DMI should remind the driver conspicuously when there is a need to press ‘push to talk’.
When the link becomes established (up-link), this should be presented very clearly to the driver sending a
Group Call. If the driver has to select a group-id (e.g. normal Group Call) the fact that an id is in use
should be clearly visible.
It is recommended to guarantee broadcasting until the sending driver has not spoken for more than 2 s or
during the first 5 s of the activation of the call.

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Figure 8 displays an example of Group Call to Group Number 846.

Figure 8 — Group Call to Group 846
EXAMPLE Group Call to Group Number 846:
1) To initiate a normal Group Call press F5, H02 and G21 (third level GSM-R).
2) Every normal Group Call starts with choosing a group identification number. After selecting the group, the
Group Call will be established. Caller can talk using the PTT. E19/25 gives PTT-message to caller.
3) Symbols for E11/E12/E13 (see symbols in CLC/TS 50459-5)
4) Opening Group Call, Group Call waiting, Group Call established, Group Call lost - Group Call ended, Use
PTT.
5) Initially E11 shows symbol 6.1. This is followed by symbols 7.1 and 7.4.
6) E12/E13 shows symbol 7.6 (Use PTT) when the call is connected.
7) If a request to talk was successful, the ‘Use PTT’ symbol is surrounded by a frame meaning “You can talk”.
Explanatory Text, if used, also changes to ‘You can talk’.
8) A frame surrounds F5 after activation. F5 displays the End Call symbol (symbol 6.16).
9) To end the call: press F5 or replace the handset.
10) After the call is ended, the frame surrounding F5 is removed and symbol 6.16 is removed.
5.3.6 Initiate Broadcast Call
The driver shall be able to establish a broadcast call to a group of his choice.
When the link becomes established (up-link), this should be presented very clearly to the driver sending a
Broadcast Call. If the driver has to select a group-id, the fact that an id is in use should be clearly visible.
NOTE The GSM-R DMI does not remind the driver to use PTT, as the originator of the Broadcast Call is the only person
who is able to talk.
Figure 9 displays an example of Broadcast Call to Group Number 846.

Figure 9 — Broadcast Call to Group 846
EXAMPLE Broadcast Call to Group Number 846:
1) To initiate a Broadcast Call press F5, H02 and G24 (third level GSM-R).
2) Every Broadcast Call starts with choosing a group identification number. After selecting, the Broadcast call
will be established.
3) Opening Broadcast Call, Broadcast Call waiting, Broadcast Call established, Broadcast Call lost –
Broadcast Call ended.
4) Initially E11 shows symbol 6.1. This is followed by symbols 7.1 and 7.4.
5) A frame surrounds F5 after activation. F5 displays the End Call symbol (symbol 6.16).
6) To end the call: press F5 or replace the handset.
7) After the call is ended, the frame surrounding F5 is removed and symbol 6.16 is removed.
5.3.7 Initiate Railway Emergency Call
There should be only one large and solid emergency button (no touch screen button, no frame button, no
membrane key etc.). The button should be protected against inadvertent use. How this protection is
provided should be considered within an overall risk assessment.
It is highly recommended that sending a railway emergency call is always possible, even when the GSM-
R DMI is switched off.
When the telephone emergency button is pressed
 GSM-R DMI is switched on, (if it is off),
 no additional human input is needed, no driver ID nor train running number,
 a railway emergency call is made.

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EXAMPLE Initiation of Railway Emergency Call:
1) The Railway Emergency Call is initiated via a hard key outside of the display area; the colour shall be red.
There is visible feedback on the screen (first level GSM-R) at E11, plus the possibility for an informative
message at E19-E25.
2) A Railway Emergency Call overrules all other types of calls except another Railway Emergency Call.
3) E11 shows symbol 8.1.
4) E12/E13 shows symbol 7.6 (Use PTT) when the call is connected.
5) If a request to talk was successful, the ‘Use PTT’ symbol is surrounded by a frame meaning “You can talk”.
Explanatory Text, if used, also changes to ‘You can talk’.
6) A frame surrounds F5 after activation of the emergency button. F5 displays the End Call symbol
(symbol 6.16).
7) To end the call: press F5 or replace the handset.
8) After the call is ended, the frame surrounding F5 is removed and symbol 6.16 is removed.
5.3.8 Other menu choices
Besides the functions that have to be available on the first level, there are other functions where it is
possible to select from a second or third level.
Figure 10 displays the areas on the second level.

Figure 10 — Areas on the second level
Third level GSM-R shows other GSM-R functions that are accessible after pressing F5 and H02. After
pressing in this menu G13 (a and b) other authorised users are available as well.
H01 always cancels the operation and the DMI returns to default.

5.3.9 Initiate call to other drivers on the same train (Multi-party)
It shall be possible for the lead driver to establish a permanent radio connection between each active cab
on a train.
Whilst on-going, a ‘multi-drivers’ indication shall be displayed permanently at all cab radios.
The lead driver should have a clear overview which other drivers are connected to the ongoing call.
Figure 11 and Figure 12 display an example of a Multi-party Call to other drivers on the same train.

Figure 11 — Selecting other drivers on train

Figure 12 — Drivers connected in a Multi-party Call
EXAMPLE Multi-party Call to other drivers on the same train:
1) To go to 'Multi-party call to other drivers' activate F5, H02 and G28.
2) The menu is third level GSM-R. Once ' Multi-party call to other drivers' is in progress the menu returns to
default mode; F5 immediately brings forward the menu 'internal train'. Other functions can still be reached
via H02.
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3) The driver can select any combination of a maximum of 5 other drivers on the same train via the
corresponding buttons.
4) After establishing the 1st connection: area G82 shows ‘cancel all other drivers’. The text on the button of a
connected party changes to ‘cancel x’ (whereas x is the label of the party).
5) The driver can cancel one at a time or cancel all at once (via G82).
6) Initially E11 shows symbol 9.1. This is followed by symbol 9.4.
7) A frame surrounds F5 after activation. F5 displays the End Call symbol (symbol 6.16).
8) To end the call: press F5 or replace the handset.
9) After the call is ended, the frame surrounding F5 is removed and symbol 6.16 is removed.
5.3.10 Initiate call to other (authorised) users
The GSM-R DMI shall have an interface for the driver to make different kinds of calls, e.g. calls to public
network numbers.
The GSM-R DMI shall have an interface for selecting or entering public network numbers.
It shall be possible to make calls using a telephone directory.
Figure 13 displays an example of a call a stored number from the telephone directory.

Figure 13 — Calling a stored number
EXAMPLE Call a stored number from the telephone directory:
1) Second level GSM-R. Activate F5 and then G13a, or activate F5, then H02 and then G13a; third level
GSM-R.
2) ‘Authorised phone numbers’ is an alphabetical list defined by the railway company. The highlighted number
in the list is active. The active number is dialled instantly when activated and the DMI returns to default
mode, the number selected is shown in E22/23 and call progr
...