PURPOSE: To simply and quickly check and information wiring system by providing a terminating equipment connecting to an end of the information wiring with an information terminal equipment connected thereto and an inspecting device connecting to a line concentrator and providing a multiplexer selecting any two information wires among plural information wires sequentially to the check device.
CONSTITUTION: A terminating equipment 4 connects to an end of an information wiring 1 to which an information terminal equipment 2 is connected and a inspecting device 5 connecting to the line concentrator 3 is provided with a multiplexer 51 selecting any two information wirings among plural information wirings sequentially. When a line voltage of two information wirings 1 selected by the multiplexer 51 is displayed in time series synchronously with a changeover of the multiplexer 51 on, e.g. an oscilloscope 52, the presence of mis-wiring is confirmed at a glance. When any wiring mistake exists, the mistake is quickly decided. Thus, any person can quickly and simply check the information wiring system with high reliability.
OGAWA HARUO
SATAKE TEI
