Поченить исходящие звонки Asterisk

Входящие работают нормально. Проблема с исходящими.. Пишут помогало прописать :

fromuser= 

fromdomain=

nat=yes 

а так же wait for dial tone NO - не нашел где это сделать

а возможно что-то с кодеками.  Шлюз openvox  gw1600.

[2021-09-28 11:54:01] VERBOSE[8411][C-0000001c] chan_sip.c: Got SIP response 503 "Service Unavailable" back from 217.**.***.***:5060

[2021-09-28 11:54:01] VERBOSE[24744][C-0000001c] app_dial.c: SIP/openvox-00000016 is circuit-busy

[2021-09-28 11:54:01] VERBOSE[24744][C-0000001c] app_dial.c: Everyone is busy/congested at this time (1:0/1/0)

[2021-09-28 11:54:01] VERBOSE[24744][C-0000001c] pbx.c: Executing [s@macro-dialout-trunk:34] NoOp("IAX2/101-8371", "Dial failed for some reason with DIALSTATUS = CONGESTION and HANGUPCAUSE = 34") in new stack

[2021-09-28 11:54:01] VERBOSE[24744][C-0000001c] pbx.c: Executing [s@macro-dialout-trunk:35] GotoIf("IAX2/101-8371", "1?continue,1:s-CONGESTION,1") in new stack

[2021-09-28 11:54:01] VERBOSE[24744][C-0000001c] pbx_builtins.c: Goto (macro-dialout-trunk,continue,1)

[2021-09-28 11:54:03] VERBOSE[24744][C-0000001c] app_stack.c: Spawn extension (from-internal, h, 1) exited non-zero on 'IAX2/101-8371'

[2021-09-28 11:54:03] VERBOSE[24744][C-0000001c] app_stack.c: IAX2/101-8371 Internal Gosub(crm-hangup,s,1) complete GOSUB_RETVAL=

[2021-09-28 11:54:03] VERBOSE[24744][C-0000001c] chan_iax2.c: Hungup 'IAX2/101-8371'