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Operation
3-2
3160-A2-GB21-80
March 1999
F1 F2 F3
OK
FAIL TEST SIG OOF ALRM
NETWORK RXD
EER SIG ALRM PDVOOF BPV
LCD
3160
ACCULINK
In
Out
In
Out
In
Out
NET
MON EQPT
DTR TXD CTS RTS
496-14936
Figure 3-1. Standalone DSU/CSU Front Panel
LCD
The LCD (Figure 3-2) displays two types of data:
H Messages such as alarms, command/test completion, and action in progress
H Front panel menu tree information (see Appendix A,
Front Panel Menu
)
F1 F2
F3
Figure 3-2. LCD
The LCD displays status messages as requested via the Device Health and
Status branch of the front panel menu (see
Device Health and Status
in
Chapter 4,
Maintenance
). In addition, the highest level status message appears
on the front panel automatically if no front panel action has occurred at the
DSU/CSU for the past five minutes.
The LCD also lists commands, configuration options, and test results. In most
cases, the top line shows the command or option name and default value, while
the second line displays options and responses. When a response is required,
select from the options displayed directly above the Function keys (F1, F2, F3);
make your choice by pressing the corresponding Function key.