| 摘要 |
PURPOSE:To simplify the constitution through the omission of registers for reception and discrimination circuit, by substituting the registers for command signal and the discrimination signal with outgoing registers and markers of an exchanger. CONSTITUTION:When starting is made from a command board of an exchanger A of a command station, a marker MK is started from a line circuit LR via a trunk TRK to activate an outgoing register OR. The register OR counts dial pulses transmitted from a sender of the exchanger A and starts the marker MK. Thus, the marker MK selects and catches the trunk TRK and transfers the command information through a trunk block connector. Then, the registers for reception and the discrimination circuit can be omitted. |
