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3. Operation
3-2
February 2001 3160-A2-GB21-90
Figure 3-1. Standalone DSU/CSU Front Panel
LCD
The LCD (Figure 3-2, LCD) displays two types of data:
Messages such as alarms, command/test completion, and action in progress
Front panel menu tree information (see Appendix A,
Front Panel Menu
)
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.
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
F1
F2 F3