[SR-Users] rtp proxy - where to invoke?

Hi,

I'm trying to get the RTP proxy to work with Kamailio (1.5), but right now I am getting this error here:

Oct 13 16:54:44 vn1031 /usr/local/sbin/kamailio[13622]: ERROR:nathelper:force_rtp_proxy: incorrect port 0 in reply from rtp proxy

There is probably something wrong in my cfg - for the use of force_rtp_proxy that part of my config is here below. See anything odd that could lead to the error above?

route { ...... route(4); ...... }

route[4]{ force_rport(); if (nat_uac_test("19")) { if (method=="REGISTER") { fix_nated_register(); } else { fix_nated_contact(); } setflag(5); } return; }

route[5] { if (is_method("BYE")) { unforce_rtp_proxy(); } else if (is_method("INVITE")){ force_rtp_proxy(); } if (!has_totag()) add_rr_param(";nat=yes"); return; }

onreply_route[1] { xdbg("incoming reply\n");

if (!(status =~ "183" || status =~ "200")) exit; #fix_nated_contact(); force_rtp_proxy(); }