| 摘要 |
PURPOSE:To apply various normality checks to an exchange path system of an exchange system continuously by providing a pseudo outgoing device and a pseudo incoming device connectably to the exchange system. CONSTITUTION:A hooking circuit in the pseudo outgoing device 3 in response to a command number from a controller 2 sends a start signal to a pseudo outgoing line 15. A remote slave station 17 uses a detection circuit equal to that of a general subscriber to detect the start signal, acquires an idle link and the presence of a call is informed to a master station processor 23 via a data link to await a command such as a channel assignment of a transmission line. After the master station processor 23 applies subscriber class identification, when a remote processor 22 receives permission information such as channel assignment from the processor 23, a DT connection bus setting is applied to send a dial tone (DT) 400Hz to a pseudo outgoing line 15. The tone is detected by a 400Hz receiver 10 in the pseudo outgoing device 3, the presence of detection is informed to a maintenance centralized station or the like via a fault informing line from the controller 2 for the processing. |
