| 摘要 |
PURPOSE:To simplify the maintenance and to enable the restart of exchange processing at failure quickly, by storing the installed data in two internal memory device of the same functions. CONSTITUTION:If a failure takes place in the 1st memory device MEM0, the readout of the installed data by a central controller CPU is inputted for the switching instruction of the memory device with a keyboard KBD so that it is made from the 2nd memory device MEM1. After that, the MEM0 caused by the failure is removed from an electronic exchanger main body, and a new memory device is fitted to the main body as the 1st memory device MEM0. Since the installed data is not stored in this new memory device, after it is fitted to the exchanger main body, the copy instruction of the installed data is transmitted to the central controller CPU with the keyboard KBD. Thus, the installed data stored in the MEM1 can be copied to the MEM0 newly. |
