Monitoring / statistics for IAX2 Trunk?

I have an Asterisk box connected to an IAX2 peer that just accepts incoming calls and uses AGI to process DTMF selections, along with providing AVR. Each call is quite short (~10 sec) and I’m receiving some complaints of audio quality (specifically choppy AVR audio).

Everything I’ve read online about statistics and netstats talks about calling those iax2 show commands from asterisk -r, which doesn’t work very well when they’re very short calls (and the box is idle 99% of the time).

Any pointers on how to collect stats for this?