1) Log in to the LMT and then choose Alarm Maintenance > Browse Alarm. Then, view the Subrack No. and Slot No. in the alarm location information to identify the BSC interface board.
2) Select the BSC on the Management Tree tab page.
3) On the BSC Device Panel tab page, check whether the BSC interface board is highlighted in green.
Y => The board is highlighted in green. The board is normal.
N => The board is highlighted in red. The board is faulty.