Вот что в логах по другому номеру у которого 3-4 сек звонок и сбрасывается...
25.02.2019 16:40:42 - [CM503003]: Call(C:207): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 127.0.0.1:5483
25.02.2019 16:40:42 - [CM503003]: Call(C:207): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:40:23 - [CM503003]: Call(C:205): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 127.0.0.1:5483
25.02.2019 16:40:23 - [CM503003]: Call(C:205): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:39:20 - [CM503003]: Call(C:202): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:39:17 - [CM503003]: Call(C:202): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Terminated/INVITE from 127.0.0.1:5483
25.02.2019 16:39:17 - Call to T:Extn:2262@[Dev:sip:
[email protected]:5483;rinstance=e84973b3107d9b10,Dev:sip:
[email protected]:5060,Dev:sip:
[email protected]:1367;rinstance=0-anyok3-q4-p7zjer4nnff84upeq1uyfw;ob;inst="8290BA"] from L:202.1[Line:10012<<89167314474] failed, cause: Cause: 486 Busy Here/INVITE from 192.168.3.1:1367
25.02.2019 16:39:17 - [CM503003]: Call(C:202): Call to <sip:
[email protected]:5060> has failed; Cause: 486 Busy Here/INVITE from 192.168.3.1:1367
25.02.2019 16:38:48 - [CM503003]: Call(C:199): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:38:03 - [CM503003]: Call(C:196): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:25:34 - [CM503003]: Call(C:166): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:23:07 - [CM503003]: Call(C:157): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:22:29 - [CM503003]: Call(C:154): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:20:23 - [CM503003]: Call(C:150): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060
25.02.2019 16:19:39 - [CM503003]: Call(C:145): Call to <sip:
[email protected]:5060> has failed; Cause: 487 Request Cancelled/INVITE from 192.168.1.52:5060