A.Hot-swappable the board, check whether the board can be restored to normal after reset

B.Use the command board reset to reset the service board. Check whether the service board can be restored to normal after resetting.

C.Press the RESET button on the handle bar of the main control board to forcibly reset the main control board. Observe whether the main control board can return to normal after resetting.

D.All of the above

A.Green 0.25s on and 0.25s off periodically flashing

B.Green 0.5s on and 0.5s off periodically flashing

C.Green 1s on and 1s off periodically flashing indicates that the board is operating normally

D.Bright green

A.Increased stability and long delay

B.Poor stability and short delay

C.Poor stability and long delay

D.Increased stability and short delay

A.False

B.True

A.IPTV business

B.Internet access business

C.Dedicated line business

D.VoIP business