[Users] Have openser make changes based on message header

First I want to thank everyone thats helped me. Here is what I am working on today. I have a set of sipura 2002, and linkys pap2 sip ata's. When you dial *67 (cid block) it tells the adapter to return a dialtone and modify the sip message header in such a way the SIP Display info is changed to "Anonymous". This doesn't set the privacy=full flag in the rpid and thus the cid is passed to the terminating end. I have tried having openser perform an action based on if from_uri =~ Anonymous but that apparently only matches to the SIP from address: not, SIP Display info. Below I have a sample bit of sip messaging.... My question is, is there any way to have openser look inside the packet and do something based on "SIP Display info"? Can I do this w / AVP's have it pull that var form the sip messaging so I can work with it later? Or heck does anyone have a solution to make the ata's pass the privacy=full flag? Message Header Via: SIP/2.0/UDP 216.120.224.163:5060;branch=z9hG4bK-f4bd2420 From: Anonymous <sip: 15184782406(a)ser1.manhattan.vtnoc.net&gt;;tag=d5d92a6937d9f838o0 SIP Display info: Anonymous SIP from address: sip:15184782406@ser1.manhattan.vtnoc.net SIP tag: d5d92a6937d9f838o0 To: <sip:13143212222@ser1.manhattan.vtnoc.net> SIP to address: sip:13143212222@ser1.manhattan.vtnoc.net Call-ID: bae3e6fd-a92244b4@localhost CSeq: 101 INVITE Max-Forwards: 70