Yealink SIP-T31G Administrator's Guide

Phone Customization
200
Devices
Web UI
T57W/T54W/T48U/T46U:
Settings > Preference > Upload Wallpaper > System Wallpaper
Other Phones:
Settings > Preference > Wallpaper
Phone UI
Menu > Basic > Display > Wallpaper
Parameter
expansion_module.backgrounds <y0000000000xx>.cfg
Description
It configures the wallpaper displayed on the connected EXP50 expansion module of the phone.
Permitted
Values
T57W/T54W/T53W/T53:
Default-exp50.jpg, 01-exp50.jpg, 02-exp50.jpg, 03-exp50.jpg, 04-exp50.jpg, 05-exp50.jpg, 06-
exp50.jpg, 07-exp50.jpg, 08-exp50.jpg, 09-exp50.jpg or 10-exp50.jpg or custom wallpaper name (for
example, wallpaper.jpg)
T48U/T46U/T43U:
Default-exp.jpg, 01-exp.jpg, 02-exp.jpg, 03-exp.jpg, 04-exp.jpg, 05-exp.jpg or custom wallpaper name
(for example, wallpaper.jpg)
Default
T57W/T54W/T53W/T53:
Default-exp50.jpg
T48U/T46U/T43U:
Default-exp.jpg
Supported
Devices
T57W, T54W, T53W, T53, T48U, T46U, T43U
Web UI
Settings > Preference > Upload Wallpaper > System Expansion Wallpaper
Phone UI
T57W/T54W/T48U/T46U:
Menu > Basic > Display > EXP Wallpaper > Wallpaper
Parameter
phone_setting.backgrounds_with_dsskey_unfold <y0000000000xx>.cfg
Description
It configures the wallpaper displayed on the phone when the DSS key list is unfolded.
Permitted
Values
T57W/T48S/T48G:
Auto, Default.jpg, 01.jpg, 02.jpg, 03.jpg, 04.jpg, 05.jpg, 06.jpg, 07.jpg, 08.jpg, 09.jpg or 10.jpg or
uploaded custom wallpaper name (for example, wallpaper.jpg)
T48U:
Auto, Default.jpg, 01.jpg, 02.jpg, 03.jpg, 04.jpg, 05.jpg or uploaded custom wallpaper name (for
example, wallpaper.jpg)
Default
Auto
(use the wallpaper configured by the parameter “phone_setting.backgrounds”)
Supported
Devices
T57W, T48U, T48S, T48G
Web UI
Settings > Preference > Wallpaper with Dsskey Unfold
Phone UI
Menu > Basic > Display > Dsskey Wallpaper

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