Through the LMT:
Log in to the LMT. Click the BSC Attributes tab.
In the Other Data field of the BSC Attributes tab page, click Timeslot of E1/T1 Int. In the View E1/T1 window, click the Gb Interface E1/T1 tab.
According to the PCU number in the alarm information, query the Subrack No. and Slot No. of the GEIUP corresponding to the PCU number.
Click the BSC Device Panel tab.
According to the query result, check whether the GEIUP is functional.
Through the PCU:
Contact the PCU maintenance engineers for help.