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Chapter 4. T1 Network Interface
Active Alarms
View History
4-4
The asterisk (*) above an item indicates the type of errors
detected. The error types described below:
CRC
CRC-6 bit errors based on the FDL. This is valid only in ESF
mode.
BPV
Bipolar violations.
XS0
Excess zeros.
FER
Framing errors.
This menu item displays a list of current alarms reported by
either the base controller or any of the ports. If no alarms are
current, the menu item displays
This display includes two lines of text. The top line is the
alarm source. The bottom line is the alarm message. A list of
alarm messages is found in Appendix D, System Messages on
page D-1.
This menu item displays and clears the accumulated status
changes of the unit.
View History displays a history of the first 20 status changes
in the unit, including the date, time, and type of change. The
unit also records for viewing the date and time an alarm
became active and inactive, as well as the date and time of
test activation and deactivation.
To clear the V
IEW
H
menu active.
ISTORY
TSU 610 User Manual
End of List
H
display, press
ISTORY
.
with the V
C
IEW
61200610L2-1
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