| 摘要 |
PURPOSE:To confirm the dial outgoing state of a master set at a slave set by adopting a constitution such that a tone signal is sent also to the slave set in the case of tone dial origination. CONSTITUTION:When a dial signal is inputted by the keyboard 22 of the slave set, a microprocessor 20 sends a code signal corresponding to the signal to the master set via a transmission circuit 18. A microprocessor 10 discriminates the code signal received by a reception circuit 1, generates a tone signal to a dial signal with the drive of a tone signal generator 12 to send the tone signal to telephone circuits L1, L2. A switching transistor(TR) 13 is conductive with the production of the tone signal to give the generated tone signal to a modulation circuit 7, where the signal is modulated and sent to the slave set via a transmission circuit 8. The signal is received by the reception circuit 15 of the slave set and regenerated by a speaker 17. Thus, the slave station confirms the tone dial origination. |
