PRESCRIBER STATE CONFIRM METHOD

摘要

This circuit is to check status of local or extension subscribers from remote system. The circuit comprises: a clock generator(10) to synchronize the system and the checking circuit(100) chronically; a signal converter(20) converting subscriber group signals turned into logic level by AND gate(G) to parallel signals with the clock signals generated by the clock generator(10); a buffer(30) buffering the parallel signal from the signal convertor(20); a group selector(40) choosing a group among the eight groups that each group is composed of 32 subscribers; a encoder(50) encoding the selection signal from the group selector(40) into binary codes; a data selector(60) finding a time clock of the selected group with the binary coded group signal; a decoder(70) generating divided clocks; flip/flops(80) latching the buffered signal convertor signal and displaying on the subscriber's display; and a display driver(90) displaying the flip/flop(80) latch signals through resisters(R-R) and LEDs(LED-LED) to check the status of subscribers.