Zyxel 2000w not registered

I tried to register a wifi Zyxel 2000w on our Asterisk server and we get the next message :

sip:1050@183.1.100.1;user=phone’ failed for ‘183.1.100.111’ - Username/auth name mismatch

sip.conf :

[WRJ1]
type=friend
username=phone
secret=wr2000
;qualify=yes
nat=no
host=dynamic
canreinvite=no
context=internal

extensions.conf :

exten => 1050,1,Dial(${WRJ1},10,r)
exten => 1050,2,VoiceMail(u1050@default)
exten => 1050,102,VoiceMAil(b1050@default)
exten => 1050,3,Hangup()

any ideas ?

tx

make [wjr1] the same as the username=, and then set the phoen to log in wtih that as both username and authname.