| 摘要 |
PURPOSE:To improve convenience in use by providing a time limit circuit outputting a switching signal when the sending of a selection dial pulse signal is finished and a prescribed time expiried and connecting a number code to a multi-frequency signal. CONSTITUTION:A time limit circuit 7 sending a switching signal after a predetermined time elapses when the dial pulse by a pushbutton dial circuit 2 is finished, and a switching means 3 connecting directly the circuit 2 connected to a dial pulse sending means 6 into a dial pulse telephone line 8 in receiving the switching signal, are provided. Thus, the trouble of manual operation to the switching of the push button dial by a multi-frequency signal is eliminated and a problem such that the function information is not transferred by the pushbutton dial due to forgotten switching operation and the function is not executed is eliminated.
|
