Hi,
Since upgrading from asterisk 18.16 to 20.14.1 I’ve noted that there are certain recordings made by MixMonitor that one side of the call is “garbled”/corrupt. I’ve looked at the PCAPs between my gateway instance and my carrier/provider, as well as between my gateway and my PBX instance, and also from the PBX instance down to the end site. All the PCAPs are clear and the RTP streams are clear. I’ve check for transcoding issues and even forced a single codec (G729, and ALAW) end to end to eliminate transcoding being an issue. I’ve also checked either side of the recording using the “r” and “t” flag with mixmonitor to see if it’s not the “mixing” that causes an issue.
The strangest part of this whole scenario is that this doesn’t happen on every call, I’ve managed to be able to replicate it rather consistently in a production environment so call recordings, PCAPs logs, etc can be made available upon request.
My question though is this, is there a way that I can further pin point the possible root cause? Any advice would be greatly appreciated.