route {

        force_rport();

        if (!mf_process_maxfwd_header("2")) {           
                sl_send_reply("483","Too Many Hops");   
                exit;                                   
        }

        if (has_totag()) {              
                xlog("Into Existing Session method!\n");
                if (loose_route()) {    

                        if ( $DLG_status!=NULL && !validate_dialog() ) {
                                xlog("In-Dialog $rm from $si (callid=$ci) is not valid according to dialog\n");
                        }

                        if (is_method("BYE")) {                 
                                xlog("End Call!\n");
                                setflag(ACC_DO);
                                setflag(ACC_FAILED);
                        } else if (is_method("INVITE")) {       
                                record_route();
                        }

                        route(relay);                           
                } else {
                        if ( is_method("ACK") ) {              

                                if ( t_check_trans() ) {      
                                        t_relay();
                                        exit;
                                } else {
                                        exit;
                                }
                        }

                        sl_send_reply("404","Not here");       
                }

                exit;
        }

        if (is_method("CANCEL")) {            
                xlog("Into cancel method line 265.\n");
                if ( t_check_trans() ) {       
                        t_relay();              
                }

                exit;
        }

		        t_check_trans();

        if (loose_route()) {
                xlog("L_ERR", "Attempt to route with preloaded Route's [$fu/$tu/$ru/$ci]");

                if (!is_method("ACK"))
                        sl_send_reply("403","Preload Route denied");

                exit;
        }

        if ( !(is_method("REGISTER") || (src_ip==192.168.1.30 && src_port==5060) ) ) {
                if (from_uri==myself) {
                } else {
                        if (!uri==myself) {
                                send_reply("403","Rely forbidden");
                        }
                }
        }

        if (!is_method("REGISTER|MESSAGE"))    
                record_route();

        if (is_method("INVITE")) {
                xlog("Into invite method.\n");
                if ( !create_dialog("B") ) {   
                        send_reply("500","Internal Server Error");
                        exit;
                }

                setflag(ACC_DO);               

        }

        if (is_method("PUBLISH|SUBSCRIBE")){
                sl_send_reply("503","Service disabled");
        }

        if (is_method("REGISTER")) {                   
                xlog("Into Register method line 304.\n");

                if (!save("location")){
                        sl_reply_error();
                }

                exit;
        }

        if ($rU==NULL) {
                sl_send_reply("484","Address Incomplete");
                exit;
        }

        alias_db_lookup("dbaliases");

        xlog("Recipient: $rU@$rd");
		
        #FreeSWITCH
        route(freeswitch);

        #Outbound
        route(outbound);

        if (!lookup("location", "m")) {
                t_newtran();
                t_reply("404", "Not Found");
                exit;
        }

        setflag(ACC_MISSED);
        xlog("Reaching lowest Call Relay.\n");
        route(relay);
}

route[outbound] {
        xlog("Jumped to Outbound.\n");
        if(!is_method("INVITE")){
                return;
        }
        if ($rU=~"^[1-9][0-9]+$") {
                xlog("FS tries to call PBX! $rU@$rd:$rp via $si");
                $rd="192.168.1.30";
                $rp="5060";
                force_send_socket(udp:192.168.1.150:5060);
                xlog("FS tries to call PBX! $rU@$rd:$rp via $si");
                route(relay);
                exit;
        }
}

route[freeswitch] {
        if(!is_method("INVITE")){
                return;
        }
        if ( ($rU=~"^[5]$" || $rU=~"^[7]$") && src_ip==192.168.1.30 && src_port==5060) {
                xlog("PBX tries to call FS! $rU@$rd:$rp via $si");
                $rd="10.250.5.50";
                $rp="5090";
                force_send_socket(udp:10.250.5.3:5080);
                route(relay);
                exit;
        }
}

route[relay] {                  

        if (is_method("INVITE")) {             

                if (has_body("application/sdp") && $si=="192.168.1.30") {
                        xlog("Offer rtpp Inbound.\n");
                        rtpproxy_offer("rei");
                }else{
                        xlog("Offer rtpp Outbound.\n");
                        rtpproxy_offer("rie");
                }
                t_on_branch("per_branch_ops");
                t_on_reply("handle_nat");
                t_on_failure("missed_call");
        }

        if (is_method("CANCEL|BYE")) {
                rtpproxy_unforce();
        }

        if (!t_relay()) {
                send_reply("500","Internal Error");
        };
        exit;
}

branch_route[per_branch_ops] {
        xlog("new branch at $ru\n");
}

onreply_route[handle_nat] {

        if( is_method("ACK") && has_body("application/sdp")){
                xlog("Answer rtpp reply\n");
                rtpproxy_answer("rie");
        } else if(has_body("application/sdp")) {
                xlog("Offer rtpp reply\n");
                rtpproxy_offer("rei");
        }
        xlog("incoming reply\n");
}

failure_route[missed_call] {

        if (t_was_cancelled()) {
                xlog("Call cancelled.\n");
                exit;
        }
}

local_route {

        if (is_method("BYE") && $DLG_dir=="UPSTREAM") {
                acc_db_request("200 Dialog Timeout", "acc");
        }
}