I can set CALLERID(num-pres)=prohib on a sip channel and Asterisk is setting the headers more or less correctly (PAI Header is missing maching the call untrackable, which is a bit odd).

But when Asterisk is handling an incomming call from:

From: Anonymous
<sip:anonymous@anonymous.invalid>;tag=3714732606-1699825061

And then I query CALLERID(num-pres) it contains: allowed_not_screened

Well, the call has a prohibited CallerID. Why is the variable not being set accordingly?