Anyone have BOTH ATAs on at the same time and incoming ringing on both for the same call? I've had both ATAs on and just can't seem to get incoming working on both. Outgoing works perfectly on both ATAs. Just wanted to confirm that this scenario was working for someone. What I'm asking is if you have the equivalent of 4 phones attached to the two ATAs and got an incoming call, do all 4 ring for that call? No, I don't forward any ports and neither is anything in my DMZ and both devices are connected in parallel behind my router.