Protection; Equipment Protection; Protection For Processing Board; 1+1 Protection For Cross-Connect Unit And Timing Unit - Huawei OSN 3500 Technical Manual

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Protection

Equipment Protection

3.1

3.1.1 Protection for Processing Board

3.1.2 1+1 Protection for Cross-connect Unit and
Timing Unit
The OptiX OSN 3500 supports the following protection schemes at equipment level:
1:N TPS for processing board
1+1 hot backup protection for cross-connect unit and timing unit
1+1 hot backup protection for SCC unit
1+1 hot backup protection for power input unit
1:N protection for the 3.3V board power supply
Intelligent fans, with rotational speed automatically adjusted
Abnormality-specific service protection
The OptiX OSN 3500 provides 1:N TPS for the boards: PQ1, PQM, PL3, PD3, SPQ4
and SEP1.
The E1/T1 service supports one group of 1:N (N ≤ 8) TPS.
E3/DS3/E4/STM-1 electrical service supports two group of 1:N (N ≤ 3) TPS.
The OptiX OSN 3500 supports three TPS groups of different types at the same
time.
The cross-connect unit and timing unit are provided by the GXCS/EXCS boards.
OptiX OSN 3500 TM - SD
3-1