Yealink SIP-T31G Administrator's Guide

Phone Customization
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Then you can find the DOB logo files in the adv directory.
Custom Logo Configuration
The following table lists the parameters you can use to configure the custom logo.
Parameter
phone_setting.lcd_logo.mode <y0000000000xx>.cfg
Description
It configures the logo shown on the LCD screen.
Permitted
Values
0-Off, the phone is not allowed to display a logo.
1-System Logo, the LCD screen will display the system logo.
2-Custom Logo, the LCD screen will display the custom logo (you need to upload a custom logo file to
the IP phone).
Default
0
Supported
Devices
All black-and-white screen phones
Web UI
Features > General Information > Use Logo
Parameter
phone_setting.lcd_logo.text <y0000000000xx>.cfg
Description
It configures the text displayed on the system logo.
Note: It works only if "phone_setting.lcd_logo.mode" is set to 1 (System Logo).
Permitted
Values
Combination of up to 7 letters
Default
Yealink
Supported
Devices
T31P, T31G, T31, T30P, T30
Web UI
Features > General Information > Logo Text
Parameter
lcd_logo.url <y0000000000xx>.cfg
Description
It configures the access URL of the custom logo file.
Note: It works only if “phone_setting.lcd_logo.mode” is set to 2 (Custom Logo).
Permitted
Values
URL within 511 characters
Default
Blank
Supported
All black-and-white screen phones

Yealink SIP-T31G Specifications

General

Mounting kit	Yes
Number of handles included	1 pc(s)
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Voice codecs	G.722, G.729, AGC, G.729A, AJB, PLC, G.711Mu, VAD, G.711a, G.723.1, G.726, iLBC, CNG, OPUS
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	3 W
Lines quantity	2 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	2
Sustainability certificates	RoHS, REACH
Networking standards	IEEE 802.3af, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	189 mm
Width	188 mm
Height	162 mm
Package depth	210 mm
Package width	213 mm
Package height	103 mm