10G OTU XFP board is a service access module for optical fiber links. It can regenerate 3R signals for 1.25Gbit/s~11.3Gbit/s services with arbitrary rate protocols, and can be converted into CWDM or DWDM standard wavelength optical signal. It can be used in optical communication systems such as PDH/SDH/POS/SONET/SAN/ETHERNET with CWDM or DWDM multiplexer/demultiplexer to realize wavelength division multiplexing transmission. It provides a high-quality solution for solving transmission lines with insufficient fiber resources and high fiber line loss.