| 摘要 |
PURPOSE:To make the maintenance and inspection work easy, through the display of state of use of each part, by providing a display monitoring the state of use for each of subscriber lines and outgoing registers of a wire telephone exchanger. CONSTITUTION:The 1st-Mth subscriber circuits 2,5,8- detecting the state of hook-off of a plurality of subscribers 1,4,7- and the 1st Nth outgoing registers 14,16- connected to an outgoing trunk 20 selected with the subscribers 1,4,7-, an order trunk 21, and a paging broadcast trunk 22 are provided for a telephone exchanger. A crossbar switch 13 is provided between the registers 14,16- and the circuits 2,5- and the switch 13, the circuits 2,5- and the registers 14,16- are controlled with the CPU23. The circuits 2,5- and the registers 14,16- are respectively provided with the 1st-Mth subscriber circuit display devices 3,6- and the 1st-Nth outgoing register display devices 15,17-, then the state of use of each part can be monitored with the display devices 3,6- and the display devices 15,17-. |
