asterisk users - Jul 2005 - call pickup with snom phones

hi,

is there anybody who was able to setup call pickup with a snom phone?

searching through the web brought up this:
http://www.voip-info.org/tiki-index.php?page=Asterisk+phone+snom
section "call pickup"
but this doesen't seem to work with current releases of the snom
firmware (and looking through the patch of easywe it never worked very
good at all)
current snom firmware doesn't seem to send the required INVITE/REPLACE
messages.

any help is appreciated.

regards
  frank