Configurando solo un interno(Friend)
SIP.CONF
[general]
bindaddr=0.0.0.0 (Este ip 0.0.0.0 libera para todas las tarjetas de red.)
srvlookup=yes
register => usuario_addphone:clave_addphone@trunk_addphone:5060
[trunk_addphone] (Configurando el troncal)
type=peer
username=login_vono
secret=clave_addphone
domain=sip1.addphone.net
fromuser=usuario_addphone
fromdomain=sip1.addphone.net
host=sip1.addphone.net
insecure=very (asterisk > 1.4 utilize "invite,port")
qualify=no
port=5060
nat=no
disallow=all
allow=g729
dtmfmode=rfc2833
context=addphone_in
reinvite=no
canreinvite=no
[interno123] (este es el interno)
type=friend
secret=senha_para_interno
qualify=no
nat=no
host=dynamic
disallow=all
allow=ilbc
context=addphone_out
callerid=interno123
canreinvite=no
extensions.conf
[addphone_out]
exten => _X.,1,Dial(SIP/${EXTEN}@trunk_addphone,50)
exten => _X.,n,Hangup
[addphone_in]
exten => _X.,1,Dial(SIP/interno123,50)
exten => _X.,n,Hangup
