To immediately execute proper processing by transmitting fault restoring information to a terminal equipment according to a prescribed restoring procedure based on information recorded in a recording means at the time of the fault restoration of the terminal equipment so as to supply-support necessary information for the terminal equipment at the point of the time of necessitating the fault restoring of the terminal equipment.

When a fault is generated at each terminal equipment 11a to 13a at a banking facility 11, a commodity sales store 12 and a station 13 utilized in a specified region, the fault content is reported to remote maintenance bases R1 to Rn, and the remote maintenance bases R1 to Rn receiving this display and print the fault content such as an error mode, error generating time and inquires of a host computer 15 a restoration corresponding method. Based on tis inquiring information, the host computer 15 retrieves answer information proper to restoring processing and answers retrieved restoration answer information to the remote maintenance bases R1 to Rn to instruct restoring processing to a terminal equipment 11a to 13a generating the fault.