[Asterisk-Users] Mediatrix 1104 Configuration

[Mark]

Hi All

I am having a problem with the configuration of a Mediatrix 1104.

In the mediatrix i have in the SIP section

Registrar:	192.168.62.200
Proxy:	192.168.62.200

Under the sip user agent I have

Username = 246
Friendly name = 246

The i configured the authentication for 

realm asterisk
user 246
password 246

I can ping the mediatrix gateway from the asterisk machine and both are on an 
internal network with no firewalls inbetween.

In asterisk I have

[246]
type=friend
host=dynamic
nat=yes
;defaultip=192.168.0.1
username=246
secret=246
mailbox=246
canreinvite=no
context=sip
callerid="Test" <246>

If I enable sip debug in asterisk I dont see any authentication failures or 
anything :-(

Any suggestions or sample configs anyone could send?

Thanks in advance

Mark