SSN1D75S Is PDH interface switching board
Huawei OSN 7500 PDH Board SSN1D75S Overview
The D75S is available in one functional version, namely, N1.
The SSN1D75S 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 front panel of the D75S has interfaces and a bar code.
The D75S can be installed in slots 26-33 and 34-41 in the subrack and works as the interface board of the PQ1.