| 摘要 |
PURPOSE:To eliminate a remote signal generating device from being pushed on a microphone of a telephone set by controlling a means to be controlled remotely for a prescribed time or for a period of the prescribed number of times of remote control being counted by a voice detecting means. CONSTITUTION:When a prescribed remote signal is incoming from a line, the signal is decoded by a remote signal decoding means 5 and outputted to a control means 2 to control the means 6 to be controlled remotely in response to the remote signal, thereby attaining a prescibed remote control state. A time counting means 7 is controlled at the same time to count a duration time of the remote control state and when a prescribed time T1 is elapsed, an alarm generating means 8 is controlled to raise an alarm. Further, a voice is incoming for a time T2, it is detected by a voice detecting means 9 and outputted to the means 2 and the means 8 is controlled through the detection of voice and the line is held for the time T2. The means 7 counts time starting from the elapse of the time T1 and a counting means 10 counts the number of times of extension of a line holding time by voice. when the time reaches T3 or the number of times of extension goes to N times, the means 3 is controlled and the line is opened. |
