Yealink SIP-T40G User Manual

Customizing Your Phone
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3. Click Browse to choose a logo file from your local system.
4. Click Upload to upload the file.
Note
Configuring the Backlight
Backlight has three options:
Active Level: The brightness of the LCD screen when the phone is active. Digits (1-10) represent
different backlight intensities and 10 is the highest level. It is only available for the
SIP-T48S/T48G/T46S/T46G IP phone.
Inactive Level: The brightness of the LCD screen when the phone is inactive. You can select a
low intensity or turn off the backlight. It is only available for the SIP-T48S/T48G/T46S/T46G IP
phone.
Backlight Time: The delay time to change the brightness of the LCD screen when the phone is
inactive. You can configure the phone to change its backlight intensity after a period of time or
always turn on the backlight.
 Always On: Backlight is always on.
 Always Off: Backlight is always off. It is not available for the SIP-T29G IP phone.
 15s, 30s, 1min, 2min, 5min, 10min or 30min: Backlight intensity changes when the phone
is inactive after a period of time.
Procedure:
1. Navigate to Menu->Basic->Display->Backlight.
Only after you upload a custom logo, can you click Delete to delete the custom logo.
The logo file format must be *.dob, contact your system administrator for more information.
Logo customization is configurable via web user interface only.
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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