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| Business Field | Type of protection |
|---|---|
| PDH | TPS Protection |
| SDH (STM-1) | TPS Protection |
| DDN | TPS Protection |
| Ethernet | TPS protection, PPS protection, BPS protection, LAG protection, DLAG protection |
| ATM | 1+1 hot backup |
| Cross Clock Unit | 1+1 hot backup |
| Control communication unit | 1+1 hot backup |
| Wavelength conversion unit | Intra-board protection (dual transmitter-receiver selection) and inter-board protection (1+1 hot standby) |
| Microwave unit | 1+1 HSB/FD/SD protection and N+1 protection |
| Power Interface Unit | 1+1 hot standby, 1:N centralized standby |
| Fan Unit | Power supply of 2 fan modules are backup for each other |
| Protection in case of single board abnormality | Power failure protection during software loading, power supply over-voltage and under-voltage protection, and single-board temperature detection function. |
|
Description:
OptiX OSN 2500 supports the coexistence of two TPS protection groups of different service types. |
|
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