The PTN3900 device needs to complete the access and processing of E1 signals through the processing board, service daughter card, and interface board. Which of the following boards is not involved in the
work?
When creating a PTN tunnel, you can set the priority of the tunnel. There are 0, 1, and 7. The larger the value, the higher the priority.
In the U2000 system, which of the following menus can be used to check the current optical power of the device?
Which of the following conditions can cause the board to insert the BDI maintenance signal back to the upstream site?
In OptiX OSN8800, which of the following boards provides clock time input and output interfaces?
In the PTN network, how many CES services can a PW carry at most?
Compared with PDH, which of the following are the main advantages of SDH?
On the PTN equipment, when the tunnel bears data and forwards, which one is wrong in the description of the actions of each node on the LSP?
In the NG-WDM system, which one of the following boards supports optical line protection?
Regarding the operation of deleting the path from the network management, which of the following statements is wrong?
