Dear friend!
For the OD, the NMS must be supported by an authorization file. Optical amplifier boards and optical spectrum analysis boards that support this function are installed on the device.
The FD system modulates the OTDR detection signals into optical supervisory signals or Raman light, uses Rayleigh scattering and Fresnel reflection principles to detect the fiber loss variation and position, and reports the detection data to the NMS. The NMS displays detection results in a graphical user interface (GUI).
The earliest versions supported by the OptiX OSN 9800 P series: V100R019C10
For your second and third questions, please visit this webpage:
https://forum.huawei.com/enterprise/en/what-is-the-oxc-platform/thread/631591-875Thanks!