| 摘要 |
A transmission line switching system for switching a transmission line in operation to another transmission line when a fault occurs in the transmission line during operation comprising: a transmission line (13) in operation constituted by a plurality of terminal repeaters (15-1 to 15-n), a plurality of circuit switching apparatuses (16-1 to 16-n), and a plurality of transmission cables (12-1 to 12-n), all connected in series; and another transmission line (14) provided between a head terminal repeater (15-1) and an end terminal repeater (15-n); wherein when a transmission cable is completely disconnected, information input from the head terminal repeater (15-1) is returned from a terminal repeater located just before a disconnection in the transmission cable to the head terminal repeater, transferred from the head terminal repeater to the end terminal repeater (15-n) through the another transmission line (14), returned from the end terminal repeater to a terminal repeater located just after the disconnection in the transmission cable, and returned to the end terminal repeater. |
