[Users] contact header radius accounting

hi all, I'd like to include caller and callee SIP contact header in radius accounting messages. Our dynamic QoS provisioning framework needs this information to set up QoS per source/destination IP address pair. Caller contact header is easily done using radius_extra and setting an AVP in the INVITE handling route block. But I haven't figured out yet how I could store the callee's contact header in an AVP. The main problem I have is that I can't use any AVP related functions in onreply_route blocks. What I'd like to do is something like modparam("acc", "radius_extra", \ "Originating-Station-IP=$avp(AVP_ORIG_IP); \ Destination-Station-IP=$avp(AVP_DEST_IP)") onreply_route[ONREPLY_DEFAULT_RELAY] { if (t_check_status("2[0-9]{2}")) { avp_write("$ct", "$avp(AVP_DEST_IP)"); } } I've learned from an earlier mail thread (http://www.openser.org/pipermail/users/2005-October/001272.html) that enabling AVP functions in on_reply routes would be rather difficult. Is there still a chance that on_reply AVP handling gets implemented? And is there an alternative method how this could be achieved without patching the acc module? thanks, Christian