D75S Is Huawei OptiX OSN 3500 PDH Boards
Huawei OptiX OSN 3500 PDH Boards D75S Overview
D75S (32xE1 switching access board).
The D75S is available in one functional version, namely, N1.
The D75S is a PDH interface switching board. The D75S can be used on the OptiX OSN equipment series to transmit and receive signals for the PDH processing board. In addition, when the corresponding PDH processing board is configured with the TPS protection, the interface switching board is required to perform the TPS protection.
The D75S receives and transmits 32xE1 electrical signals. The D75S must work with the PQ1.
The D75S consists of the interface module, switch matrix module, and power access circuit.
The D75S can work as the interface board of the PQ1.
Functions and features of the D75S
The D75S receives and transmits 32xE1 electrical signals. The D75S must work with the PQ1/PD1.