Dear friend!
It can transparently transmit two channels of 100 Mbit/s Ethernet service signals.
See the signal flow diagram of the board:

FE signals are transparently transmitted in the transmit or receive direction.
In the transmit direction, the locally first channel of FE electrical signals is received by the WSC1 port, encapsulated by the FE signal processing module, and then transmitted downstream by the TM1 port with OSC signals. The locally second channel of FE electrical signals is received by the WSC2 port, encapsulated by the FE signal processing module, and then transmitted downstream by the TM2 port with OSC signals.
In the receive direction, OSC signals from the upstream and the first channel of FE electrical signals are received by the RM1 port, decapsulated by the FE signal processing module, and transmitted to the local by the WSC1 port. OSC signals from the upstream and the second channel of FE electrical signals are received by the RM2 port, decapsulated by the FE signal processing module, and transmitted to the local by the WSC2 port.
Thanks!