| 摘要 |
PURPOSE:To confirm the normality of order transmission and reception to each terminal controller easily and quickly, by providing an order folding function between a central controller of exchange processing and a terminal controller. CONSTITUTION:A call signal in 120-channel from each terminal controller is multiplexed into 480 channels at a device 4, channel-exchange is executed at a 480-channel switch 8, multiplexed and separated into 120 channels at a device 5 and transmitted to the terminal controllers. In receiving the order shown in Fig. B at an order gate 3, the 1st ORD and the 2nd ORD are interpreted, and if the order is a folding order, the 3rd ORD - the 6th ORD are inserted in the 1st ORD - the 4th ORD shown in Fig. A and they are returned as if the orders were received at the center processing device, allowing to test the order transmission and reception of the central processing controller for exchange processing. |
