[2019-12-02 13:25:03] VERBOSE[57321][C-00000000] app_dial.c: Called PJSIP/907702201813@mitelpjsip
[2019-12-02 13:25:28] VERBOSE[57321][C-00000000] app_macro.c: Spawn extension (macro-dialout-trunk, s, 33) exited non-zero on 'PJSIP/3001-00000000' in macro 'dialout-trunk'
Call is attempted, nothing is coming back from the other end. Looks to be a signalling issue or you can investigate logs at the other end.