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GSM-R user procedures (cab radio Version 2)

signaller by dialling the signaller’s number, 12nn number, phonebook, sectional appendix

or periodic operating notices (PON).

 Under such circumstances calls will be routed to the nominated signaller who may not

be the controlling signaller and hence appear to be ‘misrouted’. Always check the

display to be sure which signaller has answered the call, and report any instances of

‘misrouted’ calls.

 You will need to pre-register the cab radio using the special ‘‘wild card’ 99X location

code (as described in section 6.2.4).

9.6 Call failure and dropped calls

Any instances of call failures and dropped calls (calls terminated unexpectedly that are not

as a result of pre-emption) must be reported to the signaller at an appropriate time, when it

is safe to do so.

9.7 Checking if the radio can make and receive calls (echo call test)

If you believe that the cab radio may be having problems making and receiving calls, you

can check this by making an ‘echo call’ to the network. To make an echo call, dial ‘1900’

using the keypad. Record a short message then wait a few seconds and your recorded

message should be played back to you.

 The Network Rail phonebook will also include an entry for the echo call test number,

that is, ‘echocall’ (see section 6.6.2).

9.8 Manually testing the cab radio (maintenance tests)

The cab radio has a number of built-in tests. These would normally be carried out by the

maintainer but may help you identify suspected problems. You can use the tests as

follows.

9.8.1 Using the test button

At any time while the cab radio is not being used, you can check

whether the cab radio is working, using the button.

Testing

Once you press the button, a message will

be displayed confirming that the self-test has

started.

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Siemens NRN 67 Series Especificaciones Pagina 73