Which of the following alarms will trigger the optical line protection switching? (Multiple choice)
A . POWER DIFF_OVER
B . R_LOF
C . MUT_LOS
D . R_LOS
Answer: AC
Which of the following alarms will trigger the optical line protection switching? (Multiple choice)
A . POWER DIFF_OVER
B . R_LOF
C . MUT_LOS
D . R_LOS
Answer: AC