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Table 2 shows the display diagnostic operation on the IP Phones and the
Expansion Module.
Table 2: Display diagnostic operation on the IP Phone and the
Expansion Module
Diagnostic step
IP Phone DN/feature
key display area
Expansion Module for
IP Phone 1100 Series
area display
initial screen blank blank
Full Contrast set to highest contrast set to highest contrast
LED Test blank blank
Character Test Characters display
across the display
areas, the telephone
on-hook icon is
displayed.
Characters display
across the display areas,
the telephone on-hook
icon is displayed.