NetConnection failed message ?

//Create a connection
client_nc = new NetConnection();

// Show connection status in output window
client_nc.onStatus = function(info) {
trace("Level: " + info.level + newline + "Code: " +  info.code);
txt.text+= "  Level: " + info.level + "  " + "Code: " +  info.code;

};
// Connect to the application
client_nc.connect("rtmp://FMS3.5installedserver-IP/tutorial_sharedball/room_01");