| 摘要 |
PURPOSE: To enhance the effect of a mischief attack sound without trouble by on-charging a cordless receiver onto a base set when the mischief attack sound is sent during talking so as to send the mischief attack sound till an opposite party hooks on its handset. CONSTITUTION: A CPU 3 provides the output of a beep tone to a slave set via a compressor IC 4 and an RF module 1 by the key operation when a mischief phone call is discriminated during talking. Then a speech IC 5 checks whether or not a cordless receiver (of a master set) and switches to the receiver in the case of NO and switches to a speaker 6 in the case of YES. The speech IC 5 provides the output of the beep tone from the CPU 3 to a line and the receiver of a slave set. Furthermore, when the speech IC 5 detects a busy tone from the line, the talking is terminated and when the speech IC 5 does not detect it, the discrimination as to whether or not the receiver (of a master set) is on-charged is repeated. Then finally the talking is finished and the telephone set is in the standby state. |
