Yealink SIP-T23G Provisioning Guide

Getting Started
17
To use the custom language for the IP phone, you also need to configure the following
parameter:
#Configure the custom language (e.g., English) for the web user interface.
lang.wui = English
#Delete all custom languages.
gui_lang.delete = http://localhost/all
Yealink IP phones allow you to customize the logo displayed on the LCD screen. These
two IP phone models use the wallpaper instead.
The following table lists the supported logo file format and resolution for each phone
model:
Phone Model
Logo File Format
Resolution
SIP-T23 (P/G)
.dob
<=132*64 2 gray scale
For more information on customizing a logo file, refer to Customizing a Logo File Using
PictureExDemo on page 79.
You can customize a *.dob logo file, upload the logo file to the provisioning server and
then specify the access URL in configuration files:
####################################################
## Configure the custom Logo File ##
####################################################
#Specify the access URL of the custom Logo File.
lcd_logo.url =
For example, enter “tftp://192.168.1.100/logo.dob” in the “lcd_logo.url =” field. During
the auto provisioning process, the IP phone connects to the provisioning server
“192.168.1.100”, and downloads the logo file “logo.dob”.
To use the custom logo, you also need to configure the following parameter:
#Configure the logo mode.
#0-Disabled, 1-System logo, 2-Custom logo
phone_setting.lcd_logo.mode = 2
After auto provisioning, you will find that the custom logo or text logo appears on the
LCD screen.
#Delete all custom logo files.
For existing language files, “X” ranges from 1 to 11. For custom language files, X must
start from 12 “Y” means the language name.
To modify translation of an existing language, do not rename the language file.

Yealink SIP-T23G Specifications

General

Backlight	Yes
Voice codecs	G.711a, G.722.2, G.726, G.729ab, iLBC
Volume control	Digital
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Silver
Display resolution	132 x 64 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Networking standards	IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x, IEEE 802.3af
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)	1.56 W
Number of handles included	- pc(s)
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Depth	188 mm
Width	209 mm
Height	150 mm