Yealink T40G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones
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Description
It configures the contrast of the LCD screen.
For T48S/T48G/T46S/T46G IP phones, it configures the LCD’s contrast of the
connected EXP40 only.
For T29G IP phones, it configures the LCD’s contrast of the connected EXP20 only.
For T27P/G IP phones, it configures the LCD’s contrast of the IP phone and the
connected EXP20.
For T40P/T40G/T23P/T23G/T21(P) E2/T19(P) E2 IP phones, it configures the LCD’s
contrast of the IP phone.
Note: We recommend that you set the contrast of the LCD screen to 6 as a more
comfortable level. It is not applicable to T54S/T52S/T42G/T42S/T41P/T41S IP phones.
Permitted
Values
Integer from 1 to 10
Default
6
Web UI
T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:
Settings->Preference->Contrast
Phone UI
T48S/T48G/T46S/T46G/T29G:
Menu->Basic->Display->Contrast
T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:
Menu->Settings->Basic Settings->Display->Contrast
Wallpaper
Wallpaper is a picture used as the background of the IP phone. The IP phone comes with a default picture.
You can change it to a built-in picture or custom wallpaper from personal pictures.
The wallpaper is only applicable to T54S/T52S/T48S/T48G/T46S/T46G/T29G IP phones and expansion
module EXP50 (connected to the T54S/T52S IP phones).
Topics
Wallpaper Configuration
Wallpaper Customization
Adding a Wallpaper from a USB Flash Drive
Example: Setting a Custom Picture as Wallpaper
Wallpaper Configuration
You can change the wallpaper to any built-in picture or custom picture.
On T48S/G IP phones, you can also separately set the wallpaper when the DSS key list is unfolded,

Yealink T40G Specifications

General

SIP Accounts	3
Wall Mountable	Yes
Opus Codec	No
Display	2.3 inch 132x64-pixel graphical LCD
Network	Dual-port Gigabit Ethernet
PoE	Yes
Headset Support	Yes, RJ9 port
Power Adapter	Optional
Voice Codecs	G.722, G.711(A/μ), G.729AB, G.726
Local Phonebook	1000 entries