| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide: a transmission device which are capable of recognizing a state of switching from the path of a specific current line to the path of a backup line, in relation to the other current lines; a transmission system; a backup path management method; and a program. <P>SOLUTION: A backup path setting means 11 sets the path of a backup line for the path of a current line between the transmission device as the starting point of the path and a device to be the end point of the path. A path inspection means 13 inspects, at intervals of a time, a state of paths of the other current lines on which devices as relay points of the line located on the set path of the backup line are made the other relay points, or a state of paths of backup lines for these current lines, and reports inspection results to a specific terminal. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
