| 摘要 |
PURPOSE:To secure an application of the automatic dial transmitter as a disaster preventing unit even when nobody is present, by adding the function which performs an automatic dial to the prescribed partner when detecting a fault and then transmits the disaster prevention information to the automatic dial transmitter. CONSTITUTION:Switching circuit SW is switched to the side having the guard function. And thus the disaster occurs at the place where the automatic dial transmitter is installed, and is detected by guard function monitor circuit GURD. And the telephone number of the prescribed guard information transmitting destination is dialed in the loop of circuit GURD-guard function control circuit CONT-guard information transmitting destination dial starting circuit GST-telephone subscriber number memory circuit MEM-dial pulse generating circuit DIAL-circuit connecting circuit TRK- telephone circuit L-telephone office NTT. After this, when called subscriber answer confirmaing circuit ANS confirms that the called subscriber has given an answer, the disaster prevention information set previously is sent to the guard information transmitting destination from guard information generating circuit LPC. |
