Yealink SIP-T40G User Manual

User Guide for T4 Series IP Phones
48
Procedure:
1. Navigate to Menu->Basic->Display->Dsskey Wallpaper.
2. Select the desired wallpaper image.
3. Tap Save.
Wallpaper with Dsskey unfold is configurable via web user interface at the path
Settings->Preference->Wallpaper with Dsskey unfold.
Configuring Transparency
If you are using a custom picture with a single color or complex background as the wallpaper
(refer to Wallpaper), it may affect your experience of the Idle screen display. For the
SIP-T48S/T48G IP phone, you can choose an appropriate transparency for DSS key labels and
status bar on the Idle screen as required.
The transparency can be configured from the following options:
 0%: The DSS key labels and status bar are non-transparent.
 20%, 40%, 60% or 80%: The DSS key labels and status bar are translucent.
 100%: The DSS key labels and status bar are transparent.
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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