[Serusers] Sip-Rpid?

[miliczo at sezampro.yu]

Hi, 
  In "SIP Express Router RADIUS HOWTO" by Jan Janak I've read that by adding 
the Sip-Rpid field in my freeradius user file "SIP Express Router can be 
configured to put the phone number into Remote-Party-ID header field of the 
SIP message"

Well, my question is, can I use the Rpid field and put it in the Caller id 
field and how.?
If anybody has done this or even thinks he has a clue, please help.


        Thanks