Hong Telecom Equipment Service LTD

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 Function...

The OptiX OSN 7500 II  SDH boards that operate at the STM-64, STM-16, STM-4, and STM-1 rates. SLQ1A (4xSTM-1 optical interface board). SLH1 (16xSTM-1 signal processing board). SLQ4A (4xSTM-4 optical interface board). SL16 (1xSTM-16 optical interface board). SL16A (1xSTM-16 optical interface board). SLQ16 (4xSTM-16 optical interface board). SLO16 (8xSTM-16 optical interface board). SL64 (1xSTM-64 optical interface board). SLD64 (2xSTM-64 optical interface board). SLQ41 (4xSTM-4/STM-1 optical interface board). SLH41 (16xSTM-1/STM-4 optical interface board with the variable rate). EU08 (8xSTM-1 electrical interface board). OU08 8xSTM-1 optical/electrical interface board). 1. Relationship between the feature code of the SLQ1A and the type of optical interface Board Feature Code Type of Optical Interface SSN1SLQ1A10 10 S-1.1 SSN1SLQ1A11 11 L-1.1 SSN1SLQ1A12 12 L-1.2 SSN1SLQ1A13 13 Ve-1.2 SSN1SLQ1A14 14 I-1 SSN1SLQ1A15 15 Ie...