Filter
Top Products
Chapter 4. Status Menu
61202156L2-1 TDU 120e User Manual 4-3
Network Interface (NI) Errors
The NI Errors submenu displays the types of errors the
Network Interface (NI) detects. A blinking CSU error
LED indicates that network errors are detected.
The asterisk (*) above an item indicates the type of errors
detected. The error types are listed below:
CRC
CRC-6 bit errors based on the FDL. This is valid only in
ESF mode.
BPV
Bipolar violations
XSO
Excess zeros
FER
Framing errors
Active Alarms
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, using this menu item displays E
ND
OF
L
IST
.
This display (see Table 4-1 on page 4-4) includes two text
fields. The left field is the alarm source. The right field is
the alarm message. A list of alarm messages is found in
Appendix C, System Messages.
If one or more of the Alarm LEDs are illuminated, an
alarm is present. Press
Escape
to return to the previous
menu item