| 摘要 |
PURPOSE:To increase the probability of transmission of urgent information to a maintenance man as high as possible and to confirm that transmitted urgent information is transmitted to the maintenance man. CONSTITUTION:An automatic transmitter 41 in an NCU 4 which automatically transmits the call number of a pocket beeper receiver carried by the maintenance man at the time of requiring report of urgent information, an automatic responder 42 in the NCU 4 which automatically responds to the call number of an urgent information reporting device 8 at the time of transmitting this call number through a telephone line 9 by the maintenance man, an audio output device 6 which repeatedly transmits audio urgent information to the maintenance man through the telephone line 9 after automatic response of the automatic responder 42, and an information processor 3 which not only stops transmission of audio urgent information but also releases the automatic response at the time of receiving a signal, which indicates that transmission contents are appreciated, from the maintenance man or excess over a preliminarily set time or repeat frequency. |
