if ( loose_route()) {
	  
		if (( method=="INVITE" || method=="REFER") && !has_totag()) {
	    		sl_send_reply("403", "Forbidden");
            		return;
	    	};
           
	  	if ( method == "INVITE" ) {

	   		if (nat_uac_test("19")) {
             	   	  setflag(6);
		   	  force_rport(); #adds the rport we have received the packet from to be added to the first via-header
		   	  fix_nated_contact(); #Rewrites Contact HF to contain request's source address:port
			  if ( ! search( "^Content-Length:\ 0" ) ) {
                        	fix_nated_sdp( "1" );
                	  };
			};

			if ( ! proxy_authorize( "proxy.mydomain.org", "subscriber" ) ) {
		       		proxy_challenge( "proxy.mydomain.org", "0" );
				return;
			 } else if ( ! check_from() ) { #check_from checks the username against the db
				sl_send_reply( "403", "Username must be same as login name" );
				return;
           		};

	   		consume_credentials();

                        force_rtp_proxy("l"); #Rewrites SDP body to ensure that media is passed through an RTP proxy.
                          		        #(l-flag means lookup mode, only use this if a corresponding
                                 		#session already exists in the rtpproxy
		}
		xlog("L_ERR", "XXXXXXXXXXXXXLOG1 route1 time [$Tf] method <$rm> r-uri <$ru> 2nd via <$hdr(via[1])>\n");
		route(1);
		return;
	};