Calls not going through (920)

[GG916]

Lately I've been having intermittent trouble placing calls on my 920 (AT&T). When I dial the phone, it says the call is going thru, but I don't hear anything on my end - dead air. Usually by the 3rd or 4th try it finally connects on my end. BUT, all the calls are going thru to the person on the other end. So when I'm hearing nothing, their phone rings and when they answer it, they get dead air. Anyone else having this problem? I'm new to AT&T so I'm not sure if it's typical of their service, or if it's my 920.

Thanks for your help

 

[Mr Manson]

Did you try with another sim card? I had similar issue with my older pone some years ago.