Конфа эндпоинта:
["Trunk_name"]
type=endpoint
transport=0.0.0.0-udp
context=from-trunk
disallow=all
allow=ulaw,alaw,gsm,g726,g722,g723
;aors="Trunk_name"
send_connected_line=false
language=ru
;outbound_auth="Trunk_name"
from_domain="ip"
from_user="login"
t38_udptl=no
t38_udptl_ec=none
fax_detect=no
trust_id_inbound=no
t38_udptl_nat=no
identify_by=ip
direct_media=no
rewrite_contact=yes
rtp_symmetric=yes
dtmf_mode=auto