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GSM-R user procedures (cab radio Version 2)

GSM-R GB

1A26

Failed to connect

7.3.3 Calling a signal box that has closed

If a signal box closes on a line still open to traffic, the signaller in another signal box will

normally take over the communication role of that box. In these circumstances you must

communicate with the adjacent signaller.

 If you call a signal box that is closed, the call may be automatically routed to the

adjacent signaller (information concerning these locations will be published in the

Sectional Appendix), if this happens, once the call has connected the identity of the

signal box that answers the call will be displayed on the cab radio.

7.3.4 Calling a signal box or panel where the role is being managed by another signaller

There are times when the role of a GSM-R fixed terminal in a particular signal box or panel

might be taken over by another signaller such as where the fixed terminal has failed, for

instance. In these instances the signaller will identify himself in his normal role but explain

why he is answering the call.

7.3.5 Urgent point-to-point call

The urgent point-to-point call allows you to contact the signaller with a higher priority than

you would need for a normal point-to-point call for situations where you need to contact the

signaller urgently. However, the matter is not serious enough to stop other trains in the

area.

GSM-R GB 1A26

Signaller

Calling Urgent

 The signaller will receive a distinctive alarm to draw his attention to the urgency.

If the call failed to connect then a ‘failed to connect’

tone (same as unobtainable tone), will be played

and message displayed.

To make an urgent point-to-point call, you must

press the ‘urgent call’ (yellow) button.

The cab radio will display similar messages to

those described in section 7.3.1, except that the

display shows an urgent call and the button

flashes.

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Siemens NRN 67 Series Spezifikationen Seite 48