I tried to search this out but didn't seem to find anything that was the same as what I see. Basically there are times the device works perfect, audio in both directions is fine. Then there are other times were at any time (beginning of a call or 20 minutes into a conversation) the non google voice caller will lose audio. The call is not dropped, just no audio. But on the google voice side you still hear the other person perfect. It does this so randomly I haven't been able to really troubleshoot it and see if there was a spike in network traffic, but I would not expect this to be the case since there aren't many connected devices and most are inactive at the times this has happened. I have had this device since 2011 and only recently started having the issues, configuration has not been changed so I am at a loss to what is going on.