| 摘要 |
PROBLEM TO BE SOLVED: To relieve a pair of the data without performing AIS insertion when the path trace values of at least a pair of reception path data among many routes are mutually replaced in a path trace terminal equipment in an SDH optical multiplexer. SOLUTION: By extracting the respective path trace values of the reception path data IN1 to INN from many routes in path trace terminal devices 2-1 to 2-N and comparing each one of the path trace values with all path expected values in a comparison processor 5, a data pair in which the path trace values are mutually replaced is detected. The data pair is replaced by correcting the cross connection map of a cross connector 1 and sent out. At the time, the AIS insertion is not performed. |
