Huawei OptiX OSN 1800 II chassis , 8 board slots, with AC/DC power module, without service board
Huawei OptiX OSN 1800 II chassis provides eight slots for boards. All boards in the chassis are installed horizontally in the front of the chassis.
Compared with the OptiX OSN 1800 I chassis, the OptiX OSN 1800 II chassis can access twice of the service volume accessed by the OptiX OSN 1800 chassis.
The OptiX OSN 1800 II chassis has a large service access capacity, and its cross-connection bus is complex. It grooms electrical layer signals as a service convergence node, and enhances the network flexibility.

Table2 Cross-connection ability of the OptiX OSN 1800 II chassis
The OptiX OSN 1800 II chassis provides eight slots for boards:
- Slots 1 through 6 can be used to house the optical transponder (OTU) boards, optical add/drop multiplexer (OADM) boards, optical multiplexer/demultiplexer boards, optical amplifier boards, and protection boards.
- Slot 7 is used to house the optical add/drop multiplexer (OADM) boards, optical multiplexer/demultiplexer boards, or SCS board.
- Slot 8 is fixed to house the SCC board.
- Slots 9 and 10 are fixed to house the PIU board.
- Slot 11 is fixed to house the FAN board.

Table 1: Slot layout of the OptiX OSN 1800 II chassis
The APIU board occupies two slots. The valid slots of the APIU board are slots 2 and 4, or slots 4 and 6.
The FAN board used in the OptiX OSN 1800 II chassis is FAN01, which is equipped with six fans.
OptiX OSN 1800 II chassis (including both DC-powered and AC-powered chassis).







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