199403 – Kelly – CityRail Train Radio

Basic Functional Requirements

The basic functional requirements for a Train Radio system on a medium density metropolitan network, such as CityRail are as follows:-

– Secure and private communications, Driver to Signaller;
– Emergency call, overrides other communications;
– Subsidiary communications (also secure and private):-
* Driver to Train Controller;
* Driver to Handportable User;
* Driver to PABX.

– Other call types:-
* Broadcast call;
* Group call.

– Data communications:-
* Fixed data message;
* Short text message;
* Transparent data transmission.

– Full radio coverage