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GSM-R user procedures (cab radio Version 2)

9.3 Registration problems

9.3.1 Registration failure

GSM-R GB

Registration failed

1A45 990 Lead Driver

If you are still unable to register the cab radio then you must contact the signaller.

The signaller may know about a particular problem that may be causing registration

failures. One problem that might cause your registration to fail is the failure of signalling

system-based call routing. In this case the signaller will give you a location code in the

form of a ‘99x’ wild card number. This will overcome this problem. In this case, you can

use your original TRN together with the 99x location code to register the radio

successfully.

 The ‘wild card’ 99x number should only be used when prescribed in these user

procedures or by a signaller, as the use of this function removes safeguards against

registering with the wrong TRN.

9.3.2 Cab radio failed to de-register from previous journey

If the cab radio has failed to deregister from the previous journey then you will not be able

to register a new TRN. If the previous TRN or the registration code is shown in the train

number field, attempt to deregister this first. If this fails, or no number is present and the

correct registration fails twice, contact the signaller to report the problem.

 The signaller may be able to identify a ‘stuck registration’ on his/her fixed terminal. It

may be possible to register to the exact same registration code (provided the train is

standing at the same signal as the previous train) and then deregister it. Otherwise,

the signaller will report this as a fault to be cleared by the network technicians.

9.3.3 PA registration failure

GSM-R GB

Deregistration failed

1A45 990 PA

1A51

GSM-R GB

No PA Reg’d

1A45 990 PA

In these circumstances you must deregister and attempt to re-register the cab radio. If the

fault persists then you must report it to the signaller and await further instructions.

If the message ‘registration failed’ is displayed

after trying to register the cab radio, you should

check the registration code was entered correctly

by attempting to register the cab radio for a

second time.

If during registration the cab radio displays

‘Deregistration failed, PA’, then the signaller will not

be able to initiate a call to the train’s PA system.

 If is pressed the display will show “No PA

Reg’d”.

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