Hong Telecom Equipment Service LTD

OSN 3500  is a new-generation optical transmission system developed by Huawei. It adopts a unified switching architecture and can function as an MPLS/MPLS-TP-based packet device or a TDM device. When working with other devices of Huawei,  OSN 3500  supports various networking modes, including the pure packet mode, hybrid networking (packet + TDM) mode, and pure TDM mode, achieving optimal processing for packet services and traditional SDH services. Thus,  OSN 3500  efficiently transmits voice and data services over the same platform. Version Description The SLH1 is available in one functional version, namely, N1. Version Mapping Board Start Version N1SLH1 V100R006C02 Board Updates This section describes the hardware updates in V200R013C30 and later versions as well as the reasons for the updates. Any product versions that are not listed in the document means that they have no hardware updates. Application The ...

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...