Device for mutually transmitting direct current signals and audio-frequency signals

摘要

The invention is based on the object of developing a known transmission device, in which only a direct current signal as remote-control signal and audio-frequency signals are transmitted via a two-wire line, in such a manner that a plurality of direct current signals can be transmitted. This object is achieved in that a first direct current signal having a first polarity, a second direct current signal having reverse polarity, and a third direct current signal as well as further direct current signals having various currents are transmitted from one telecommunication device (BT) to another telecommunication device (FG). The evaluation of the transmitted direct current signals in the respective device is preferably carried out by means of opto-couplers (OK1, OK2, OK3) The invention is suited in particular for a transceiver which is controlled by a stationary operating part via a two-wire line. The drawing shows a simplified diagram of an operating part and a remote-control circuit of a transceiver. <IMAGE>