OVERHEAD INSERTING PROCESSING METHOD FOR OPTICAL INTERMEDIATE REPEATER SYSTEM AND OPTICAL INTERMEDIATE REPEATER SYSTEM

PROBLEM TO BE SOLVED: To minimize the delay of a main signal by accelerating processing by performing overhead inserting processing to the main signal without rearranging a leading position in the unit of bytes. SOLUTION: A main signal processing system 1A is provided with a serial/ parallel converter 3A, 1st time switch 4A and 2nd time switch. Besides, an overhead processing system 2A is provided with a 1st byte switch 8A, parity arithmetic part 9A, overhead generating part 10A and 2nd byte switch 11A. Then, signals from a data section containing frame leading information to the final data section in the main signal are shifted by one bit by the switch 4A, and the switch 6A performs the reversed processing to the switch 4A. Further, the switch 8A performs overhead inserting processing to the main signal without rearranging the leading position of the main signal in the unit of bytes in the main signal processing system. In this case, the switch 4A rearranges the leading position and the switch 11A performs the rearranging processing reverse to the switch 8A.