Hi, I've been taking a lot of conference calls lately with my OBI2182 with Google voice configured. Recently I noticed that the audio will drop after roughly 15 minutes, however, the phone seems to think the call is still in progress (call time keeps increasing). No one can hear me and I can't hear anyone else. The only solution is to hang up and dial back in. Has anyone else experienced this? This works fine on my Cell phone as well as smart displays.