| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a path switching control system capable of achieving cost reduction and downsizing. <P>SOLUTION: The path switching control system includes at least: a redundant path composed of an active path and a standby path; a transmission device for regenerative repeating provided at the redundant path; an optical reception level monitor provided at each of the redundant paths; and a warning reception monitor provided in common to the redundant path. <P>COPYRIGHT: (C)2012,JPO&INPIT |
