Question 371
The trigger condition for automatic protection switching of 1+1 optical line protection is SF (signal failure), and the two alarms involved are () and ()
Question 372
OSN 8800 equipment adopts fan redundancy protection. When any fan in the fan box is broken, the system can still run normally for a long time.
Question 373
Which of the following descriptions about 0TN frame structure overhead is wrong?
Question 374
SOTU stands for Single Optical Transport Unit Interface, and MOTU stands for Multiple Optical Transport Unit Interface.
Question 375
When a 80 wave ROADM site uses a TM20 for multiplexing, an ITL board must be configured.