| 摘要 |
PURPOSE:To supervise easily a digitized signal transmitted on a subscriber line by branching and selecting a signal transmitted via the subscriber line and inputting the signal to a subscriber line accommodating terminal of an exchange. CONSTITUTION:A branching circuit 9 branches a signal (s) transmitted via a corresponding subscriber line 2 and transmits it to a selecting circuit 10. The selecting circuit 10 selects one of branching circuits based on a command of a signal controller 50 and inputs the signal (s) transmitted from the branching circuit 9 to a subscriber line accommodating terminal of a line concentrator 4 as communication information (c). A channel used as a supervisory path (m) is set between the subscriber line accommodating terminal and a signal supervisory device 80 and the signal (s) inputted by the selecting circuit 10 is transmitted to the signal supervisory device 80. Thus, a command is inputted to the signal controller 50 via a controller 6 and the signal (s) transmitted via a subscriber line 2 is transmitted automatically to the signal supervisory device 80 by making the selecting circuit 10 select the branching circuit 9 corresponding to the subscriber line 2 being the objective of supervision. |
