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Also See for A21:
- Quick start manual (14 pages) ,
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- User manual (24 pages)
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A2X(W)/A20LTE IP Phone User Manual
3.4.7. Display
For more convenient, users are able to adjust the contrast grade and backlight of the main
LCD display.
1. Slave Contrast
There are 9 different contrast grades for options, press the soft key "Switch" or the key
.
for modification,8 is the default value.
.
2. Backlight
Backlight is the brightness of LCD, also it has been defined as 9 different grades. The number
"9" means the lightest.
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ATCOM TECHNOLOGY CO., LIMITE
www.atcom.cn
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