Hi,

I have a very strange problem with DIAL + USB URIs.

I get choppy audio after a couple of days or maybe several hours of constant use.

Restarting asterisk or even the PC wont solve the problem.

The problem only goes away if I connect the URI to another USB or shut down the PC for several hours.

Maybe some temperature problem on the USB card?? 

I'm using a standard PC (i5 + 8GB) with 2 USB URIs.

To test the problem I connected a tone generator to the URIs.

These are some examples of the saved audio files in asterisk: