After latest SW update, advanced calling switched "on" (I had turned it off due to poor quality). No outgoing audio / call recipients could not hear me. Power cycled phone / tried BT and speaker - same issue.
Turned AC off and phone now working.
From what I have been reading even with the new patch updates this continues to be a problem with some phones. I would keep the AC feature off as this seems to be the only working fix at this time. I would contact Motorola if it continues to be an issue but only after Verizon get the bugs out of the AC program. Hope this help.