i am getting this type of message when the call comes into my pbx
[Mar 5 16:57:31] WARNING[3343]: chan_sip.c:8639 check_auth: username mismatch, have , digest has
[Mar 5 16:57:31] NOTICE[3343]: chan_sip.c:14422 handle_request_invite: Failed to authenticate user "INFORMATION DAT " ;tag=as6419784f