| 摘要 |
PURPOSE:To transmit a message on electromagnetic waves from a center to a pocket bell carrier, when a pocket bell device calls out the pocket bell center, by calling the telephone number and recording the said message on an automatic answering telephone device, in desiring a call to the pocket bell carrier. CONSTITUTION:When a call comes from one of many unspecified callers, its call signal is detected at a ringing amplifier 1, the output sets a flip-flop FF-1 and a relay Y-1 is kept operative, and its contact y1-1 closes telephone lines L1, L2. A T-1 driving circuit 2 is stated via a contact y1-2 at the same time and the running of a response tape T-1 is stated. When the response tape T-1 is circulated once and a conductor foil 4 and an electrode 5 stuck at the start point are bronght into contact with each other, then a flip-flop is set via an NAND gate G-2, a differentiation circuit 6, and a terminal of an OR gate, the driving circuit is started via a transistor and the reception tape is run forward at the recording state. |
