The NMS displays a message indicating that the background is busy and querying or configuring the boards fail. See the following figure.
(1) Confirm the service type on the tributary board corresponding to the NQ2 board before configuring the service mode on the NQ2 board. Do not change the service mode after the service mode on the NQ2 board is configured. In this case, the situation that the background is busy can be avoided.
(2) If the service mode is changed, wait for about one minute before performing any operation on the board.