Mototrbo and AlphaCom interfacing
From Zenitel Wiki
This article describes how the AlphaCom can be integrated to the digital radio system Mototrbo from Motorola.
Functionality:
- Without the XCMP converter only basic groupcall is supported (no
calling ID)
- With the XCMP converter and EventHandler configuration the following
functionality has been tested:
- Groupcall in fixed group (M-key is PTT)
- Semi-duplex private call to selectable MOTOTRBO radio
- Incoming group and private call to predefined intercom station
- Predefined text messages to MOTOTRBO radio
- Call Alert to MOTOTRBO radio
- Display of Calling ID
- The following functionality has not been tested yet:
- Incoming Emergency Call
- Talkgroup change
- Remote monitor (listen in at radio)
The following functionality is currently not supported:
- Receiving of text messages from AlphaCom (radio firmware issue). Which means that the radio handsets cannot receive for instance Call Request
Most suitable radio is DM3600 (display model); for basic functionality also DM3400 can be used.
Connections:
- The Mototrbo radio is connected to IP-ARIO with:
- RX audio to Radio IN (Motorola 770 mV nom.)
- TX audio to Radio OUT (Motorola 80 mV nom.)
- PTT to RCO output (active low)
- When more than groupcall functionality is required than a specific USB to Serial adapter is necessary (XCMP converter); the adapter is connected to serial port on the IP-ARIO and to the accessory port on MOTOTRBO radio (USB).
- Audio is asymmetric, DC-block capacitor is required in TX audio line to radio.
- Ignition input of the radio needs to be connected to +12V to power-up the radio automatically.