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Yealink T40G User Manual

Yealink T40G
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Yealink T4 Series IP Phones User Guide
121
1. Long press the desired Ext key on the expansion module.
The phone screen will enter the user setting interface of this key.
2. Customize the specific feature for this key on the phone.
3. Select Save.
Adjusting the Contrast of the Expansion Module
You can configure the contrast of the expansion module via the host phone to make it easier to read.
Procedure
1. Navigate to Menu > Basic > Display > Contrast.
2. Select the desired value between 1 and 10 (highest intensity) from the Contrast field.
3. Select Save.
Adjusting the Backlight of the Expansion Module
When you change the backlight intensity settings on your T48S/T48G/T46S/T46G phones, the backlight on expansion
module connected to your phone automatically changes to match the new settings.
Related Topic
Changing the Backlight and Time

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Yealink T40G Specifications

General IconGeneral
SIP Accounts3
Wall MountableYes
Opus CodecNo
Display2.3 inch 132x64-pixel graphical LCD
NetworkDual-port Gigabit Ethernet
PoEYes
Headset SupportYes, RJ9 port
Power AdapterOptional
Voice CodecsG.722, G.711(A/μ), G.729AB, G.726
Local Phonebook1000 entries

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