Records BrandMeister calls on a talkgroup to files using the Simple External Application protocol.

go get github.com/BrandMeister/callrec
go install github.com/BrandMeister/callrec

Copy config-example.json to config.json and edit it.

You can define callExecCommands. Received call data will be passed to callExecCommand1's stdin, and call data passed through all defined callExecCommands will be saved on the disk (callExecCommand1's stdout is piped to callExecCommand2's stdin and so on). This way you can pass AMBE data to an external application which decodes the stream.

The strings $SRCID, $DSTID, $SRCCALL and $DSTCALL in the callExecCommands get replaced by their value at the time of the call.

Note that every time a new call starts, a new process gets created. When the call ends, the processes started by callExecCommand get their stdin closed and need to stop.

In some cases (for example when UDP hole punching is not enabled on the firewall), it might be useful to have a fixed listening port instead of randomly picking one. You can do this by setting sourceAddress to for example :1234: then port 1234 will be used as the local listening port.