Hi, how may I catch the reply of an invite? I did this but it seems is not working: if (method=="INVITE") { $avp(sdp_ret) = fix_nated_sdp("11"); xlog("L_ALERT","#####********###### SDP return: $avp(sdp_ret)\n"); append_hf("P-hint: sdp rewritten\r\n"); t_on_reply("REPLY_TWO"); } onreply_route("REPLY_TWO") { xlog("L_ALERT","ALERT: ################ $rU - $rm from $fu (IP:$si:$sp--------$di)\n"); return; } Any help will be appreciate it, thanks in advance. Lucas