Question 316
OLT does not need to configure () modules only when using external optical transmission equipment.
Question 317
The sink function of the TCM sublayer includes monitoring overhead and reporting defect information. Which of the following is wrong about the defect information reported by the TCM sublayer? (Multiple choice)
Question 318
Which of the following TU-AIS alarms are often encountered during network maintenance can trigger TU-AIS alarms? (Multiple choice)
Question 319
The parameter () is usually used to measure the impact of bit errors on transmission quality
Question 320
Among the following DCC types, which of the following are used by ESC? (Multiple choice)