[asterisk-users] baffled by defaultuser on aastra 9133i

[sean darcy]

1.6.2.13, sip.conf:

[155]
type=friend
context=longdistance
callerid="Admin" <155>
secret=test
host=dynamic
dtmfmode=rfc2833
allow=all
defaultuser=155-trust
............

On aastra:

Basic SIP Authentication Settings
Screen Name 	
Phone Number 	          155
Caller ID 	          155
Authentication Name 	  155-trust
Password                  test

But:

WARNING[1737]: chan_sip.c:12800 check_auth: username mismatch, have 
<155>, digest has <155-trust>
NOTICE[1737]: chan_sip.c:21687 handle_request_register: Registration 
from '155 <sip:155 at 10........>' failed for '10..........' - 
Username/auth name mismatch

How do I set this so the Authenication is not the same as the extension?

sean