Which of the following ITLI-T recommendations define the OTN frame structure?
When using the LCAS function, which of the following overhead bytes is used to transmit control information? (Multiple Choices)
The STAT indicator of the SDH board flashes red, lights up for 100ms, and turns off for 100ms. Which of the following means the state of the metric?
Which of the following alerts does not trigger an AU-AIS alert?