| 摘要 |
PURPOSE:To receive a remoto control signal surely, even when a response message or a business message is being in reproducing, by inserting a hybrid circuit having a specific frequency characteristic to the titled device. CONSTITUTION:When an output is fed to a recording and reproducing amplifier 12, as the transmission of response message or the reproduction of business message, and the hybrid circuit 8 is in maching at a specific frequency, the voice from an amplifier 12 is suppressed at a hybrid transformer 8-3. When a remote control signal comes from a main trunk terminal 7, since the sound from the amplifier 12 is suppressed, the remote control signal is inputted to a remote control signal amplifier circuit 21 via the transformer 8-3, wave-shaped 22 and inputted to a buffer circuit 29. A CPU 30 stores each digit of the remote control signal in an RAM 33. |
