asterisk users - Oct 2003 - newbie: need help configuring asterisk and snom

Hi all,
I have been struggling desperately to get * work together with my 
snom100 for days on end, but I am not making any progress...
Of the entries marked *#) I'm still not sure what it does; so far I have
  on the snom
   in "SIP/lines"
    -user name - empty  *1)
    -account - Conrad
    -registrar - 192.168.200.83
    -action - "None" *2)
   in "SIP/authentication"
    -realm - empty  *3)
    -user - "Conrad"
    -pass - "secret"
    -line - "All"

  in asterisk:
   in "sip.conf"
    -host - "dynamic"
    -username - "Conrad"
    -callerid - ""     *4)
    -accountcode - ""  *5)
    -secret - "secret"

all I get in * is countless lines of
"NOTICE[81926]: File chan_sip.c, Line 5119 (handle_request): 
Registration from '<sip:Conrad@192.168.200.83>' failed for
'192.168.200.81'"

well, at least I get some result, but I can't figure out what's wrong.
any hints, links, ideas?
tia

-- 
Mit freundlichen Gr??en
Conrad Braun
Pentaprise GmbH
Im Pinderpark 5
D-90513 Zirndorf
http://www.pentaprise.de

Hello Conrad

I have asterisk running with Snom200 - works really well - and should be
no different to that of a 100. The one thing I can see you have missing
is the realm - I don't no a huge amount about that but the realm should
be equivalent to the context of the sip user in asterisk - so if the
asterisk context is internal then the sip realm should be internal.

When you set that you will see 

Registration from '<sip:Conrad@192.168.200.83>' failed for
'192.168.200.81'"


change to 

Registration from '<sip:Conrad@internal>' 


Regards

Nick