| 摘要 |
A circuit for microprocessor control of two-subscriber lines connected to a telephone exchange by means of the equipment of an exchange two-subscriber line, comprising relays detecting calls from subscribers, and relays allowing to direct calls to a relevant subscriber from two subscribers using a two-subscriber line, characterized in that each of the wires (c) of at least one pair of subscriber loop circuit (AZLx, AZLy) is connected with one pair of inputs (X, Y) of a microprocessor control unit (MJN), and moreover the following third inputs (A) of the microprocessor control unit (MJN) are connected to the ground potential by means of an operating contact (a6) of a relay constituting the equipment of at least one exchange two-subscriber line (WClD).<IMAGE>
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