A port-multiplexed system (and associated method and software) are disclosed. Such a system includes: a computing resource having a port; a monitoring interface to the computing resource available via the port; plural end user devices to be connected to the monitoring interface; and a liaison interface to multiplex the plurality of end user devices to the monitoring interface via the port. The computing resource can be a mobile switching center and the monitoring interface can be configured to obtain status display pages (SDPs).