[leoz83]

Ciao, come promesso ecco il mio sip.conf

[general]
context=infacebis
allowoverlap=yes
bindaddr=0.0.0.0
tcpenable=no
bindport=5060
srvlookup=yes
externip=MIOIPESTERNO
callevents=yes
qualify=yes
qualifyfreq=60
defaultexpiry=60
maxexpiry=60
minexpiry=60
nat=force_rport,comedia
rtpholdtimeout=30
rtpkeepalive=30
rtptimeout=30
transport=udp

register => MIONUMERODITELEFONO@windtre.it:MIAPASSWORD@voip.windtre.it:5060/MIONUMERODITELEFONO~900

[basic-options](!)                ; a template
        dtmfmode=rfc2833
        context=from-office
        type=friend

[natted-phone](!,basic-options)   ; another template inheriting basic-options
        directmedia=no
        host=dynamic

[public-phone](!,basic-options)   ; another template inheriting basic-options
        directmedia=yes

[my-codecs](!)                    ; a template for my preferred codecs
        disallow=all
        allow=ulaw
        allow=g723
        allow=g729
        allow=gsm
        allow=alaw
        ; Or, more simply:
        ;allow=!all,ilbc,g729,gsm,g723,ulaw

[ulaw-phone](!)                   ; and another one for ulaw-only
        disallow=all
        allow=ulaw
        ; Again, more simply:
        ;allow=!all,ulaw


[6000]
type=friend
callerid="Leo" <6000>
username=6000
host=dynamic
secret=123456
regcontext=bcmph-line-1
regexten=6000
dtmfmode=rfc2833
insecure=invite,port
canreinvite=yes
nat=yes
qualify=yes
context=bcmph-line-1
pickupgroup=1
callgroup=1
mailbox=1000@default

[windtre]
username=MIONUMERODITELEFONO@windtre.it
type=friend
secret=MIAPASSWORD
context=infacebis
realm=windtre.it
qualify=30
maxexpiry=30
port=5060
outboundproxy=voip.windtre.it
nat=yes
insecure=invite,port
host=windtre.it
fromuser=MIONUMERODITELEFONO
fromdomain=windtre.it
dtmfmode=rfc2833
canreinvite=yes
callerid=MIONUMERODITELEFONO
; account=MIONUMERODITELEFONO-in
username=MIONUMERODITELEFONO@windtre.it
type=peer
secret=MIAPASSWORD
realm=windtre.it
; account=MIONUMERODITELEFONO-out

fatemi sapere se riuscite a ottenere una configurazione "completa" con gli accorgimenti del post precedente (modem Home&Life HUB)