I just called from my cell phone to the office. It still shows "Absolute Ring Group" but it also shows my cell phone. So it seems to be only the display name that is the issue. The log shows this:
21-Apr-2016 10:17:09.008 [CM503003]: Call(C:4): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 10.1.10.31:5062
21-Apr-2016 10:17:09.007 [CM503003]: Call(C:4): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 10.1.10.33:5062
21-Apr-2016 10:17:09.000 [CM503003]: Call(C:4): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 127.0.0.1:5488
21-Apr-2016 10:17:09.000 [CM503003]: Call(C:4): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 127.0.0.1:5488
21-Apr-2016 10:17:08.999 [CM503003]: Call(C:4): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 127.0.0.1:5488
21-Apr-2016 10:17:08.999 [CM503003]: Call(C:4): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 127.0.0.1:5488
21-Apr-2016 10:17:06.208 NAT/ALG check:L:4.1[Line:10000<<18632411982] REQUEST 'INVITE' - some of SIP/SDP headers may contain inconsistent information or modified by intermediate hop