Yealink SIP-T40G Administrator's Guide

Phone Customization
201
Custom Wallpaper Picture Limit
Example: Setting a Custom Picture as Wallpaper
The following example shows the configuration for uploading custom picture named “wallpaper.jpg” and set it as
idle screen wallpaper. The custom picture is placed on the provisioning server “192.168.10.25”.
Example
wallpaper_upload.url = http://192.168.10.25/wallpaper.jpg
phone_setting.backgrounds = wallpaper.jpg
After provisioning, the phone idle screen wallpaper changes to custom picture “wallpaper.jpg”.
Transparency
The T57W/T54W/T48U/T48S/T48G phones display line keys and status bar transparently. If you use a custom pic-
ture with a color or complex background, it may affect the user’s experience. You can choose the appropriate trans-
parency for DSS key labels and status bar on the idle screen as required.
The following show line keys and status bar transparency set on T48S phones:
Topic
Transparency Configuration
Transparency Configuration
The following table lists the parameter you can use to adjust transparency.
Parameter
phone_setting.idle_dsskey_and_title.transparency <y0000000000xx>.cfg
Description
It configures the transparency of the DSS key labels and status bar on the idle screen for the IP phone.
Note: It is also applicable when the DSS key list is unfolded on the T57W/T48U/T48S/T48G phones.
Permitted
Values
0%, the DSS key labels and status bar are non-transparent.
20%, 40%, 60%, 80% or 100%
Default
100%
Supported
Devices
T57W, T54W, T48U, T48S, T48G
Web UI
Settings > Preference > Transparency
Phone UI
Menu > Basic > Display > Transparency

Yealink SIP-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm