asterisk users - Jun 2007 - passing privacy information through asterisk

hi,

I have the following setup:

PSTN -> cisco-as5300 -> asterisk -> sip-phones

the as5300 sends a remote-party-id-header with privacy information
depending on what is coming from the PSTN.

for example the as5300 is sending as the remote-party-id header:
<sip:43664805xxxxxx at
194.208.xx.xx>;party=calling;screen=yes;privacy=full

but asterisk is sending the call to the sip-client with:
"bla" <sip:43664805xxxxxxx at
194.208.xx.xx>;privacy=off;screen=no

so the privacy information is _not_ passed through. Why ? 

playing around with trustrpid and sendrpid has not worked...

thanks, florian