I bought two of these phones yesterday and so far one works perfect and the other has an issue. The issue is that about 10 seconds into a call, both sent and received, the phone "mutes" and I can hear the person on the other end but the person on the other end cannot hear me. I tried restarting the phone, removing and replacing the battery and the old *22890 reprogramming and checked the firmware was current . . . no change. Any others with this issue? Fixes?