The signal flow direction of the OptiX OSN 9800 N402 veneer can be categorized into transmit direction and receive direction, i.e., the N402 veneer is in the transmit direction from the backplane to the WDM side, and vice versa for the receive direction.

Transmit direction

The OTN processing module receives the ODUk signals dispatched from the cross-board via the backplane, completes the operations of OTN framing and FEC coding processing within the module, and outputs two OTU4 signals.

The OTU4 signals are sent to the WDM side optical module, and after E/O conversion, the OTU4 optical signals conforming to the DWDM standard wavelength recommended by ITU-T G.694.1 are sent out from the optical ports "OUT1" to "OUT2".

Receiving direction

The WDM-side optical module receives OTU4 optical signals of DWDM standard wavelengths recommended by ITU-T G.694.1 from the WDM-side optical ports "IN1" to "IN2" to complete O/E conversion.

The O/E-converted signal enters the OTN processing module, completes the operations of OTU4 framing and FEC decoding within the module, and outputs the ODUk signal to the backplane for cross-scheduling.

TNU3N402T61 single board indicators include optical interface indicators, single board size, weight and power consumption.

The related technical information in this chapter and the SDH equipment troubleshooting process are collected and organized by Shenzhen Optical Transmission Network Technology Company Limited (www.opticaltrans.com), please retain! Our company specializes in Huawei SDH optical transmission equipment,SDH transmission equipment sales.