Product Name Huawei EX2 Part Number EX2 Manufacturer HUAWEI Application SDH Condition New/Used The network processing module performs the O/E conversion for the Ethernet optical signals from the port of the Ethernet equipment, and performs the coding/decoding and the serial/parallel conversion for the data. The network processing module also performs route searching and address matching for the data packets, and transmits the corresponding packets to the transmission management module. After the transmission management module buffers and schedules the packets, the transmission management module slices the packets into cells required by the switching network. After the switching buffer module buffers the cells, the cells are then sent to the cross-connect unit.