asterisk users - Nov 2004 - remote iaxy device Ping:OK iax2 Poke: no answer

Hello.

I have a iaxy at a remote network using a vpn.

If I use ping, I can ping the iaxy machine.
Even I can provide it.

But if I enable iax2 debug and set the qualify=yes at the iax.conf file, 
i get the Poke no answer so the peer is unreacheable.

My iax.conf entry
[miguel]
host=10.0.255.2
type=friend
user=miguel
secret=1111
context=default
disallow=all
permit=10.0.255.2
allow=ulaw;
qulify=yes

; IAXY Provisioning description
;
;dhcp
ip: 10.0.255.2
netmask: 255.255.255.0
gateway: 10.0.255.1
codec: ulaw
;codec: adpcm
server: 10.0.1.1
;altserver: 192.168.0.2
user: miguel
pass: 1111
register
heartbeat
;debug

Any ideas? what to check? routes?
How can i know what is coming back from the iaxy?