| 摘要 |
PURPOSE:To save useless part of an automatic answering telephone receiving tape, by controlling an external recorder by two control methods depending on the length of beep tone. CONSTITUTION:When an incoming call is given from the third party, a callout signal is detected at a ringing amplifier 1 to activate a relay Y-1. Thus, a contact y1-1 is closed and the callout signal is stopped and a motor M is driven to run a response tape T-1 and to transmit the response message on line. Succeedingly, the playback of signal tone is started and it is detected by a beep tone detecting circuit 5 and inputted to time constant circuits 6, 7, and the circuit 6 drives relays Y-2, Y-3 after one second. Simultaneously, a recorder is driven and when the signal tone is interrupted after 5 seconds, the recorder stops. The recorder is driven with the signal tone in 1 second after the transmission of the 2nd response message to record the message. When the tape T-1 turns around by once, the ringing amplifier is reset and the system stores to waiting state. |
