Nortel Networks 1100 Series - Manual (Page 14)

Introduction
14
Adjusting the expansion module display screen
contrast
To adjust the expansion module screen contrast, press the Prefs
Context-sensitive soft key, select Display , and select Contrast .
Attention: Contrast adjustment on the expansion module is
controlled by the same control the IP Phone uses for the main display.
To adjust the Expansion Moule display screen contrast:
Backlight
The Expansion Module has a firmware controllable backlight. The
Expansion Module draws power from the phone and requires no external
power adapter. Because of the higher power consumption of the
backlight, if the phone is connected using PoE, backlight is not supported;
otherwise, the expansion module can still operate normally.
The type of power supply to the phone controls what is functional on the
Expansion Module. The Expansion Module’s backlight can only light when the
local 48V power supply is present. On the other hand, either local 48V power
supply or Power over Ethernet (PoE) to the phone will power all of the Expansion
Module’s other functionality. To have the backlight on for the IP Phone 1100
1. Press the Left/Right navigation key to
increase or decrease the display
contrast level.
2. Choose one of the following:
— Press the Set Context-sensitive soft
key to save the changes and return
to the Display
menu.
— Press the Back Context-sensitive
soft key to keep existing
configurations and return to the
Display menu.
or
Set Back