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 PCIC in the alarm information, check whether the Timeslot Type of the PCIC is NULL. If the Timeslot Type is of NULL, it indicates that the configuration of the PCIC is inconsistent between the PCU and the BSC.