| 摘要 |
PURPOSE:To detect quickly troubles of a telephone set in a moving body by adding a test circuit, a test control circuit, a test result storage device, a test result display device, and a system clock to the telephone set in the moving body and testing automaticaly various function of the telephone set in the moving body and displaying test results on the test result display device and an exchange. CONSTITUTION:When a preliminarily determined time comes, a system clock 8 supplies power from a battery 5 to a telephone set 6 in the moving body, a test circuit 9, and a test control circuit 7 and instructs the test control circuit 7 to start the test circuit 9 and originates a test call to test various functions of the telephone set 6 in the moving body. When a telephone subscriber B in the moving body turns on the power source of the telephone set 6 in the moving body, the test control circuit 7 instructs a test result display device 11 to display test results, and they are displayed. When the telephone subscriber B in the moving body calls through the telephone set 6 in the moving body, test results stored in a test result storage device 10 are transferred to an exchange 2 on a voice channel through the test control circuit 7 and are displayed on a test result display device 3. |
