SDH OptiX OSN 7500 II PDH Boards

SDH OptiX OSN 7500 II PDH Boards below:

The PDH boards include the PDH service interface boards and PDH service processing boards, to transmit/receive and process E1/T1 signals, E3/T3 signals, E4/STM-1 electrical signals, and DDN signals.

PQ1 (63xE1 service processing board).
PQM (63xE1/T1 service processing board).
PQ3 (12xE3/T3 service processing board).
DX1 (DDN service accessing and converging board).
SPQ4 (4xE4/STM-1 electrical processing board).
D12B (32xE1/T1 access board).
D12S (32xE1/T1 switching access board).
D75S (32xE1 switching access board).
D34S (6xE3/T3 switching access board).
MU04 (4xE4/STM-1 electrical interface board).
DM12 (DDN service interface board).
TSB8 (8-channel electrical interface protection switching board).

1 Relationship between the feature code of the PQ1 and the type of interface impedance

Board	Feature Code	Type of Interface Impedance
SSN2PQ1A01	A01	75-ohm
SSN2PQ1B01	B01	120-ohm

2 Functions and features of the PQM

Function and Feature	PQM
Basic functions	Processes 63xE1/T1 signals.
Service processing	Transmits/Receives and processes 63xE1/T1 electrical signals when working with the interface board. Each channel can be configured as E1 or T1.
Overhead processing	Supports the processing of the path overheads at the VC-12 level, such as the J2 byte.
Alarms and performance events	Reports various alarms and performance events, which facilitates the management and maintenance of the equipment.
Maintenance features	Supports inloops and outloops at electrical interfaces.
	Supports warm resets and cold resets. The warm reset does not affect services.
	Supports the query of the manufacturing information of the board.
	Supports the in-service loading of the FPGA.
	Supports the upgrade of the board software without affecting services.
	Supports the PRBS function. For details, see Availability.
	Supports the CRC function.
Protection schemes	Supports the TPS protection when working with the interface board.

3.Functions and features of the PQ3

Function and  Feature	PQ3
Basic functions	Processes 12xE3/T3 signals.
Service processing	Transmits/Receives and processes 12xE3/T3 electrical signals.
	Supports the E13 function, which is used to converge E1 services into E3 services.
	Supports the M13 function, which is used to converge T1 services into T3 services.
Overhead processing	Supports the setting and query of all the path overhead bytes at the VC-3 level.
Alarms and performance events	Reports various alarms and performance events, which facilitates the management and maintenance of the equipment.
Maintenance features	Supports inloops and outloops at electrical interfaces.
	Supports warm resets and cold resets. The warm reset does not affect services.
	Supports the query of the manufacturing information of the board.
	Supports the in-service loading of the FPGA.
	Supports the upgrade of the board software without affecting services.
	Supports the PRBS function. For details, see Availability.
	Supports the CRC function.
Protection schemes	Supports the TPS protection when working with the interface board and the switching and bridging board.

4. Relationship between the feature code of the DX1 and the type of interface impedance

Board	Feature Code	Type of Interface Impedance
SSN3DX1A01	A01	75-ohm
SSN3DX1B01	B01	120-ohm

5. Functions and features of the SPQ4

Function and  Feature	SPQ4
Basic functions	Processes 4xSTM-1/E4 signals.
Service processing	Transmits/Receives and processes 4xE4/STM-1 electrical signals. The E4 signals and STM-1 signals are compatible on each channel. Supports the VC-12 services, VC-3 services, and VC-4 services.
Overhead processing	Processes the section overheads of the STM-1 signals, such as B1, B2, K1, K2, M1, F1, and D1–D12.
	Supports the transparent transmission and termination of  the path overhead bytes including J1, B3, C2, G1, and H4.
	Supports the setting and query of the J0, J1, and C2 bytes.
Alarms and performance events	Reports various alarms and performance events, which facilitates the management and maintenance of the equipment.
Maintenance features	Supports inloops and outloops at optical interfaces.
	Supports warm resets and cold resets. The warm reset does not affect services.
	Supports the query of the manufacturing information of the board.
	Supports the in-service loading of the FPGA.
	Supports the upgrade of the board software without affecting services.
	Does not support the CRC function.
Protection schemes	Supports the TPS protection when working with the interface board and the switching and bridging board.
	Supports the Two-fiber ring MSP.
	Supports the Linear MSP.
	Supports the SNCP.

6. The D12B is a PDH interface board. The D12B can be used on the OptiX OSN equipment series to transmit and receive signals for the PDH processing board. To transmit/receive and process signals, the interface board must be used with its corresponding processing board.

7. The D12S is a PDH interface switching board. The D12S 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.

8.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.

9.The D34S is a PDH interface switching board. The D34S 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.

10. The MU04 is an E4/STM-1 electrical interface board. The MU04 can be used on the OptiX OSN equipment series to transmit and receive signals for the E4/STM-1 electrical processing board.

11.The DM12 is a service interface board. The DM12 can be used on the OptiX OSN equipment series to transmit and receive electrical signals of the DDN, sub-rate, and framed E1services.

12. The TSB8 is used to provide the TPS protection.

The TSB8 can work with the MU04 and D34S to realize the TPS protection on different processing boards.

• The TSB8 can work with the MU04 to realize the TPS protection on the SPQ4.
• The TSB8 can work with the D34S to realize the TPS protection on the PQ3.
• The TSB8 can work with the ETS8 to realize the TPS protection on the EFS0A.

Above are functions and features of OptiX OSN 7500 II PDH Boards .