| 摘要 |
PROBLEM TO BE SOLVED: To lighten the mental burden on the user of a telephone line terminal by detecting a malfunction at the terminal itself and turning on a power source again according to a recovery signal from a maintenance management section. SOLUTION: Telephone lines 1 and 1' are respectively connected to terminals 2 and 2'. When the malfunction occurs at the terminal 2', it is reported through the other line to the maintenance management section. The maintenance management section sends a power source recovering command to the telephone line 1, starts a power source manipulator 3 and turns on the power source of the terminal 2' again. In such a case, this power source manipulator 3 does not sense the communication signal of the terminal 2. According to a signal sent from the telephone line 1, the power source turn-on device 3 temporarily cuts off power supply to the terminal 2' and peripheral equipment thereof and successively turns on their power sources again. When the power source is turned on again, the terminal 2' is activated again, afterwards, an ordinary function test is performed and in the case of normality, an ordinary operation is performed but in the case of abnormality, ordinary maintenance management is executed. |
