asterisk users - Dec 2004 - Phone Giptel G100 with Asterisk?

Hi there,

so far I've been unable to get a Giptel G100 phone to operate with 
Asterisk - I tried both SIP and MGCP. Since I've been playing with quite 
a number of different SIP (and also MGCP) user devices I am starting to 
think that it might be the phone's fault and not mine... ;->

Still: Anyone out there has this working with Asterisk?

The symptoms are that the G100 won't register, i.e. it doesn't respond
to
the SIP nonce that Asterisk sends out. A static IP won't help, and if I 
use autocreatepeer=yes then ringing the phone works, but upon picking up 
the handset the phone keeps ringing...

However, since providers like Nikotel are selling the G100 there must be 
a way to get it working; my current guess is that with SER or some other 
SIP proxy it might come to life. Comments?

Cheers & good night,
Philipp