The present invention illustrates a touch input and display device of door bell systems to replace conventional bells, which only have push buttons. The bottom of the vessel has a hole sealed by a frangible barrier. The haptic device does not require a large mass, so that it can be provided on almost any portion or part within the body of a mobile apparatus. A look-up is performed when the user command is not automatically locally stored in the viewer appliance to determine if local storage is require. The auxiliary signals may be used as part of a built-in testing of a network, including electrical time-domain reflectometry measurements to determine fault locations in a network.