[Asterisk-Users] Budgetone is not registering

[Rodolfo Grave]

Hi again. I cant get my Budgetone registered in Asterisk, and I cant 
find what's wrong... uff. This is my config:

This fragment is from my sip.conf:

[12345]
type=user
user=12345
username=12345
secret=12345
authuser=12345
qualify=1000
nat=no
host=dynamic
dtmfmode=rfc2833
reinvite=no
canreinvite=no
disallow=all
allow=g729
allow=ulaw
allow=alaw
context=sip_default

And this is from my Budgetone configuration:

SIP Server: 192.168.1.175 -- asterisk is in my LAN
SIP User ID: 12345
Authenticate ID: 12345
Authenticate Password: 12345

And this is the message repeated in the asterisk console:

Dec 21 21:36:15 NOTICE[3024]: chan_sip.c:7531 handle_request: 
Registration from '<sip:12345 at 192.168.1.175;user=phone>' failed for 
'192.168.1.176'

Can you please help? What is that user=phone about?

Thanks a lot in advance,

RODOLFO