MixMonitor how to record two-channel audio, distinguish left and right channels

[fish_cat]

Hello everyone, please help me, MixMonitor how to record two-channel audio, distinguish left and right channels? What parameters or configurations should I add

same => n,Answer()
same => n,MixMonitor(abcd.wav)

[jcolp]

You can record them in separate files using the ‘r’ and ‘t’ options and post-process, or newer versions have a ‘D’ option for interleaving[1].

[1] MixMonitor - Asterisk Documentation

[fish_cat]

I’m using version 18, but it is a pity that the version 18 does not have D
same => n,MixMonitor(abcd.wav,r(abcd_in.wav)t(abcd_out.wav)) is not what I want

In addition to this
In version 22, there is the option of D parameter, how is this D used? Sorry, I don’t understand how to pass the value,

same => n,MixMonitor(${CALL_ID}.wav,D) is this right

[jcolp]

Asterisk 18 is security fix only, it receives no new changes.

Yes, that is how it would be used.

[fish_cat]

Thank you very much for your answer