MDC Signaling


MOTOTRBO contains a limited set of built-in MDC signaling features:

Emergency Signaling - Sends a help signal to a pre-defined person or group of people. The emergency feature also allows a user to sound an alarm or alert the dispatcher in an emergency situation. The user is also able to acknowledge an emergency.

Call Alert - Call Alert notifies the radio user of incoming calls if they are a short distance away from their radio. Call Alert also informs unavailable users that someone is trying to reach them.

PTT-ID - PTT-ID identifies the user’s outgoing calls on other users’ radios.

 To configure radio to work with MDC signaling, read the codeplugs of the subscriber radio in CPS.


1. Create MDC Signaling System and specify the following parameters:

Primary ID (Hex) – all radios in MOTOTRBO Network should have different IDs.

Note. Radio ID System of MDC subscriber is different from radio ID system of digital subscribers. The user may enter up to a maximum of 4 hexadecimal digits (minimum 0001 and maximum DEEE (symbol F is not allowed for any of the digits)).

PTT ID Type – choose Pre Only to be able to register radio automatically.

It’s also possible to configure Emergency System to send Emergency alarm/call.



2. Add analog channel and specify MDC system

On the created channel choose Squelch Type CSQ and Signaling System MDC System. Write settings to the radio.

 Codeplug of the control station should be configured accordingly.




Specify the same settings for Control Station (except Primary ID (Hex)).

To configure Radioserver, use MOTOTRBO Control Station configuration.

Specify Digital ID of the radio and IP address.




Save settings and restart RadioService.


 After configuration subscribers will appear in the list of online subscribers on the Dispatch Console with the first activity coming from this subscriber.




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