iOS 8 calling problems

[spades1412]

Im curious if anyone else has experienced this same problem. I'm having some very specific problems with my iPhone 6 plus on iOS 8.0.2. When at home and connected to Wifi I can receive calls just fine. I also have a MBA running Yosemite PB. Both of these devices are connected to the same iCloud account. I can send and receive calls on the MBA via the iPhone just fine. My problem is when leaving. After moving away from the Wifi connection and connecting to AT&T's LTE network, the phone will not complete a call. I will initiate a call, the phone will respond, but the call will not go through. No ringing or any indication that the call is being processed. Ive heard from the people I'm trying to call, that they will receive the call and answer it to silence. On my end the phone usually goes to a "Call Failed" screen. Toggling Airplane mode on & off corrects this and from there the phone behaves as normal.