H31-341_V2.5 Exam Dumps - HCIP-Transmission V2.5
OOS overheads are optical-layer overheads. Which of the following statements about OOS overheads is false?
The OA module inside an EMR8 board provides the____function. With this function, when one or more channels are added or dropped or optical signals of some channels fluctuate, the signal gain of other channels is not affected, (Enter only lowercase letters.)
After a device is powered on, what need to be checked on subrack fans? (Choose all that apply.)
When the TTI to be received at the PM layer is inconsistent with the TTI actually received at the PM layer, which of the following alarms will not be reported?
The difference threshold between the working and protection channels in 5 dB. The initial optical power on both channels is 2 dBm. When the fiber attenuation of the working channel increases, its optical power changes to -4 dBm and the optical power of the protection channel remains unchanged. This triggers optical line protection switching.