Comme promis.

Voici ma conf

Configuration patton

m-ata-1-e-ss1.png
m-ata-1-e-ss2.png
m-ata-1-e-ss3.png
m-ata-1-e-ss4.png
m-ata-1-e-ss5.png

Configuration via freepbx, resultat sur sip_additional.conf
[203]
deny=
secret=***********
dtmfmode=rfc2833
canreinvite=no
context=from-internal
host=dynamic
trustrpid=yes
mediaencryption=no
sendrpid=pai
type=friend
nat=no
port=5060
qualify=yes
qualifyfreq=60
transport=udp,tcp,tls
avpf=no
force_avp=no
icesupport=no
encryption=no
callgroup=
pickupgroup=
dial=SIP/203
permit=
callerid=203 <203>
callcounter=yes
faxdetect=no
cc_monitor_policy=generic