View source for Mototrbo and AlphaCom interfacing

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This article describes how the AlphaCom can be integrated to the digital radio system Mototrbo from Motorola.

==Functionality==
What functionality you get depends on whether the AlphaCom and the radio communicate via serial data or not. If more than groupcall functionality is required, then a specific USB to Serial adapter is necessary (XCMP converter). The adapter is connected to the serial port on the IP-ARIO and to the accessory port on MOTOTRBO radio (USB).

===Without XCMP converter ===
* Without the XCMP converter only basic groupcall is supported (no caller ID)

===With XCMP converter===
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 Caller 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)


* 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.


[[Category:3rd party integration]]