[TELNYX]
externip = 123.123.123.123
localnet=192.168.1.0/255.255.255.0
type=friend
insecure=port,invite
host=sip.telnyx.com
port=5060
dtmfmode=rfc2833
canreinvite=no
disallow=all
allow=ulaw
allow=g729
qualify=yes
qualifyfreq=30
nat=force_rport,comedia
trustrpid=yes
rfc2833compensate=yes
session-timers=refuse
defaultuser=TELNYX
context=inbound


https://support.telnyx.com/18144-ip-trunk-configuration/asterisk-trunk-configuration-with-telnyx-mission-control-portal