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Chapter 4. Status Menu

61202156L1-1 TDU 120e User Manual 4-3

Network Interface Errors

The NI E

RRORS

submenu displays the types of errors the Net-

work Interface (NI) detects. A blinking CSU error LED indi-

cates that network errors are detected.

The asterisk (*) above an item indicates the type of errors

detected. The error types are shown in Table 4-1.

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

End of List

The display in Table 4-2 on page 4-3 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 on page C-1.

If one or more of the Alarm LEDs are illuminated, an alarm is

present. Press

Escape

to return to the previous menu item.

Table 4-1. NI Error Types

Error Type Description

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

Table 4-2. Alarm Message Display

ACTIVE ALARMS

NETWORK (NI)

END OF LIST

LOSS OF SIGNAL

RED ALARM

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 131 132

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ADTRAN 1202156L1 Manual de usuario Pagina 55