Hi, I'm getting some distortion on calls with FreeSWITCH. This is when using the playback command to stream wav. I'm not really sure how to diagnose the issue - I have noticed it both when running FreeSWITCH on my laptop and connecting over SIP from my smartphone on my home network, and have reports that it happens when running on a server on a PRI line using a Sangoma A104 card. The distortions are a sort of crackling or noise, or audio breaking up a bit (they are not present in the source files). How can I approach debugging this? What are typical causes? Related question (as this might have to do with hardware but I'm not sure) - are there any guidelines to be found on how to choose hardware for a system streaming wav files using FreeSWITCH on many (up to 1500) channels at the same time? It seems like this might be a pretty heavy workload and I'm wondering how to do this in a way that ensures availability and quality. Kind regards, Sam