Вот логи, что происходит примерно в это время:
2016-09-12 17:46:21 asterisk[8698]: NOTICE[8722]: chan_sip.c:21813 in handle_response_peerpoke: Peer '101' is now Reachable. (1ms / 2000ms)
2016-09-12 17:46:55 asterisk[8698]: WARNING[15197]: app_dial.c:2341 in dial_exec_full: Unable to create channel of type 'SIP' (cause 20 - Subscriber absent)
2016-09-12 17:46:57 asterisk[8698]: WARNING[15197]: app_macro.c:309 in _macro_exec: No such context 'macro-set-dynamic-feature' for macro 'set-dynamic-feature'. Was called by s@macro-main
2016-09-12 17:47:20 httpd: 127.0.0.1:35284: response:401
2016-09-12 17:47:21 httpd: 127.0.0.1:35293: response:401
2016-09-12 17:47:21 asterisk[8698]: WARNING[15517]: app_macro.c:309 in _macro_exec: No such context 'macro-set-dynamic-feature' for macro 'set-dynamic-feature'. Was called by s@macro-main
2016-09-12 17:47:24 httpd: 127.0.0.1:35401: response:200
2016-09-12 17:47:39 asterisk[8698]: WARNING[15517]: app_macro.c:309 in _macro_exec: No such context 'macro-set-dynamic-feature' for macro 'set-dynamic-feature'. Was called by s@macro-main