Some SNCP protection inversion conditions are default, such as AU-AIS and TU-AIS. Other conditions are optional, such as HP-TIM and HP-SLM. Optional conditions can be flexibly set according to the level of the costume.
Answer(s): A
TU-AIS is often encountered during network maintenance.Which of the following alerts can trigger a TU-AIS alert? (Multiple choice).
Answer(s): A,B,C,D
SES: There are 5% or more of the error blocks or at least one defect (OCI/AIS/LCK/IAE/LTC/TIM/PLM) in one second.
Answer(s): B
When the ACT indicator of the SDH board is off, it means that the board has a hardware failure and cannot be used.
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