| 摘要 |
PURPOSE:To make the demarcation of fault exact and efficient and thereby to make the processing of fault of the titled exchange easy by so forming the system that the fault location information when detecting the fault can be informed to the controlling device. CONSTITUTION:When a discrepancy occurs at a bit B1, channel CH1 in the ltype frame between the double time division multiple highway 200 and 201, a fault information is outputted to an information line 9. Because the information line 9 is connected to both the set terminal S of a flip flop 10 and the clock terminal of a register 21, under the direction from the controlling device which is not shown in the figure, the fault information is informed to the controlling device by the driving pulse (of pulse width T1) from a fault-display driving line 15 via an AND gate 12 and an information line 13, and also, the driving pulse of the pulse width T1 is impressed to a fault-location-read driving line 23. And, through an AND gate 24, the fault location information is outputted to an information line 25. |
