The 1G/10G/25G/40G/100G/200G/400G OTU service board introduced by ISEELINK upports 1.25G ~ 200g rates of any type of service access. Its main function is to regenerate the 4 accessed arbitrary protocol service signals for 3R and can be converted into 4 WDM standard wavelength optical signals, so as to facilitate wavelength division multiplexing of optical signals of different wavelengths by the wave combining unit, and realize the inverse process of the above process. www.iseelink.com https://www.otndevice.com