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The SL4A is a line board. The SL4A can be used on the OptiX OSN equipment series to transmit and receive STM-4 optical signals. The SL4A converts the received optical signals into electrical signals and sends the electrical signals to the cross-connect side. In addition, the SL4A converts the electrical signals sent from the cross-connect side into optical signals and transmits the optical signals. The SDH processing boards can form a ring network or a chain network in the system.
The SL4A is available in one functional version, namely, N1.
Through the board version replacement function, the N1SL4 and the N1SL4A can substitute each other.
SSN1SL4A valid slots
The SL4A can be installed in slots 1–8, 11–18, and 26–31 in the subrack.
SSN1SL4A specifications of the ports
|2 km STM-4 two-fiber bidrectional optical interfaces
|15 km STM-4 two-fiber bidrectional optical interfaces
|40 km STM-4 two-fiber bidrectional optical interfaces
|80 km STM-4 two-fiber bidrectional optical interfaces
|100 km STM-4 two-fiber bidrectional optical interfaces
|10 km STM-4 single-fiber bidrectional optical interfaces
|80 km CWDM
|80 km CWDM STM-4 optical interfaces
|120 km DWDM
|120 km DWDM STM-4 optical interfaces
Relationship between the feature code of the SL4A and the type of optical interface
Type of Optical Interface
|Receives and transmits 1xSTM-4 optical signals, and processes 1xSTM-4 standard or concatenation services.
|Specifications of the optical interface
|Supports different types of standard optical interfaces, namely, the I-4, S-4.1, L-4.1, L-4.2, and Ve-4.2. The characteristics of the optical interfaces of the I-4, S-4.1, L-4.1, and L-4.2 types comply with ITU-T G.957. The characteristics of the optical interface of the Ve-4.2 type comply with the standards defined by Huawei.
Supports the CWDM and DWDM colored optical interfaces. The optical interface uses the LC connector. The CWDM optical interface supports the transmission distance of 80 km, and the DWDM optical interface supports the transmission distance of 120 km.
|Specifications of the optical module
|Supports the VC-12 services, VC-3 services, VC-4 services, and VC-4-4c concatenation services.
|Alarms and performance events
|Reports various alarms and performance events, which facilitates the management and maintenance of the equipment.