Problem with incoming calls CloudOrchestra(ex eutelia)

Hello everyone,
I configured asterisk with OpenWRT, and I set my SIP provider.
I have a problem with incoming calls, outgoing ones work well!
incoming, when I compose the number, I do not feel nor ringing phone calls nor the phone is called.
this is my configuration, I’m not very experienced, I think there’s some mistake.

[spoiler]
;sip.conf
[general]
bindport=5060
bindaddr=0.0.0.0
language=it
srvlookup=yes
canreinvite=yes
directrtpsetup=no
trustpid=yes
sendrpid=yes
callevents=yes
insecure=invite,port
pedantic=no
secret=XXXX
user=092XXXXXXXX
defaultuser=092XXXXXXXX
fromuser=092XXXXXXXX
allowexternal=yes
allowguest=yes
checkmwi=10
context=from_ext ; per la gestione delle chiamate entranti da VoIP
realm=voip.eutelia.it ; Dominio del servizio VoIP SIP
port=5060 ; Porta UDP per la segnalazione SIP
srvlookup=yes ; Abilita il DNS SRV per chiamate uscenti
defaultexpirey=330 ; timer di registrazione degli account SIP
useragent=Asterisk_Eut
nat=force_rport,comedia instead
localnet=192.168.1.12/255.255.255.0 ; subnet e mask della LAN
externip=93.X.X.X ; indirizzo IP pubblico
disallow=all
allow=ulaw
allow=alaw
callerid = Unknow
tcpenable=no
register => 092XXXXXXXX@voip.eutelia.it:XXXX:092XXXXXXXX@voip.eutelia.it:5060/092XXXXXXXX

[092XXXXXXXX_out]
context=from_ext
type=friend
secret=XXXX
user=092XXXXXXXX
defaultuser=092XXXXXXXX
fromuser=092XXXXXXXX
host=voip.eutelia.it
nat=force_rport,comedia instead
dtmfmode=rfc2833
regcontext=from_ext
canrenvite=yes
disallow=all
allow=ulaw
allow=alaw
allow=h261
allow=h263
tcpenable=no
insecure=invite,port

[092XXXXXXXX_in]
secret=XXXX
fromuser=092XXXXXXXX
user=092XXXXXXXX
dtmfmode=rfc2833
regcontext=from_ext
type=friend
context=sip-provider-in
defaultuser=092XXXXXXXX
callerid=device <092XXXXXXXX_in>
dial=SIP/092XXXXXXXX_in
host=voip.eutelia.it
nat=force_rport,comedia instead
canreinvite=yes
disallow=all
allow=ulaw
allow=alaw
tcpenable=no
insecure=invite,port[/spoiler]

[spoiler]
;extensions.conf
[general]
static=yes
writeprotect=no
autofallthrough=yes
clearglobalvars=no
priorityjumping=no

[from-sip-external]
include => from_ext
[from_ext]
exten => _X.,1, Answer
exten => _X.,n, Hangup
exten => s,1,Dial(Bcm63xxPhone/1,120,t)
same => n,Hangup(16)

[sip-provider-in]
exten => s,1,Dial(Bcm63xxPhone/1,120,t)
same => n,Hangup(16)

[bcmph-line-1]
exten => _X.,1,Dial(SIP/092XXXXXXXX_out/${EXTEN})
same => n,Hangup(16)[/spoiler]