Abstract: A visual display network interface for placement between the incoming telephone network access line to a structure and user telephone equipment within the structure for indicating the operational status of the network access line and the user equipment includes a modular housing disposed between the network access line and the user telephone equipment wherein the housing includes an electrical circuit providing a pair of light-emitting diode indicators which are operable in either an illuminated or an unilluminated mode depending upon the status of the network access line and the telephone equipment within the premises. The circuit arrangement is designed to indicate whether or not continuity of the network access line exists as well as where a fault may be located if the user telephone equipment fails to operate properly.