The E1/T1 ports have 16 statuses, including Activated, Disabled,
Fault, RAI Alarm, AIS Alarm, ISDN/SS7 Signal Alarm, Frame-
Sync, Idle, Signal, Busy, L-block, R-blocked, B-blocked,
Blocking, Unblocking and Resetting.
The meaning of each status, please make reference to 4.4.3.
Meanwhile, you can carry out maintenance on the E1/T1 ports through the following
buttons:
Select All, Invert, Clear, Block, Unblock, Reset and Cancel.
Select Channel on the right of Operation Mode, and then select an E1/T1 port, the
channels of the E1/T1 port and their statuses are displayed.