Moto.Net

A C# client to handle MotoTrbo including native wire line communication, LRRP, and TMS

MotoMond

This service logs radios and calls. It also supports the following commands:

1. check - Issues a radio check to the specified radio via the IP connected repeater
2. locate - Sends an LRRP request to the specified radio via a USB connected control radio
3. test - Sends a text message to the specified radio via a USB connected control radio
4. getip - Gets the IP address of the specified radio

Why did I write this?

I had a few use cases in mind. Some of which I've acomplished others I am still working on. Working use cases:

1. I wanted to be able to determine, objetively, if changes I made to the repeater setup were improving reception or not. To do this I needed to know where the radio was (LRRP) and the strength of the signal (IPSC) at that location. Combining the two I was able to graph out how my improvements were helping.
2. I wanted to know how many talkgroups in my Capacity Plus setup were in use at once. So that I can determine correct capacity.
3. I wanted to play around with interfacing the radio system with internet audio like Discord (Bot will be uploaded soon), Mumble (still have some issues here)m and Zello (client also soon).
4. I wanted to get alerted and log repeater errors somewhere more useful than RDAC seems capable of. Not yet working cases:
5. I wanted to be able to quickly inventory my radios on the air including ID (working), Serial Number, and Firmware Version.

How did you write this? Did you hack other sources?

I used some online sources such as DMRLink and a Wireshark dissector. I then started out rewriting it in Golang. And while I do like Go I ran into a few issues without inheritence.

But I digress, from there I used packet captures and some source I found elsewhere online (I don't recall where at the moment) to determine the handshake for XNL to repeaters. This took a lot of cycles on my GPU to reverse engineer.

XNL Constants

This library allows for using some of Motorola's proprietary XNL/XCMP protocol. However, to actually use it requires some constants to manipulate a payload. Those constants aren't in the repo. Ideally this should be an exercise for you to figure out how to derive them. However, I have added code that will detect if the constants aren't defined and will then take other software you may have (TRBONet) and use its built in decrypting library instead. Just drop the TRBONet.Server.exe file from an install into the same folder as the executable running Moto.Net and it will figure it out from there.

Audio decoding

This library allows for audio decoding, however it requires an external vocoder library to decode the AMBE+ codec. That too you have to obtain on your own. If someone wants to write a layer to use an open version that is fine, but I have no desire to include the vocoder in this code as from what I can tell it is IP encumbered.

HW issues

This software was built against two XPR8400 repeaters running in CapacityPlus mode. I've also tested it with an even older XPR8300. I have not however had the opportunity to test this with any newer repeaters. So there may be some issues on newer repeaters. I will absolutely try to support pulls that try and bring in newer repeaters.