The OTN + ROADM feature of Huawei OSN 9800 cross-connects a client service in any optical direction while ensuring high bandwidth utilization.
Below picture illustrates how OTN and ROADM effectively transmit client services.
A tributary board receives client services at any bit rate. After OTN mapping and ODUk cross-connection are complete, the client signals are flexibly cross-connected on the electrical layer and share bandwidth. A line board then outputs the signals over different wavelengths.
Along the optical cross-connections on the ROADM board, the signals over different wavelengths can be transmitted in any optical direction.
If the signals in an optical direction do not need to be locally terminated, they can be directly transmitted to another optical direction through the optical cross-connections on the ROADM board.