The present invention relates to a control method of broadcasting system using a telephone and control device thereof. The method comprises the steps of: connecting to a tone detector of the control system by switching a hook switch when a bell signal transmitted by a call of the subscriber is detected more than a set number; after the connection step, sending a previously recorded guidance voice to the subscriber under control of a central processing unit and detecting telephone button signals generated by a manipulation of the subscriber by frequency values of tone frequency; determining which broadcast region the subscriber wants based on the telephone button signals and driving corresponding relays; and connecting electrically the broadcasting system to a broadcast destination of the selected broadcast region to broadcast speech signals to the broadcast destination, the speech signals being sent from the subscriber. A control device corresponding to said method comprises: a bell signal detector (20) connected to a telephone line (10) for detecting bell signals that ring by a set number; a central processing unit (50); a tone detector (30); a broadcast equipment controller (60); and an output controller (70). |