Yealink SIP-T23G Provisioning Guide

Yealink IP Phones Auto Provisioning Guide
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Yealink IP phones allow you to upgrade firmware manually via web user interface, or
upgrade firmware in batch via auto provisioning.
The following table lists the firmware name for the phone model (X is replaced by the
actual firmware version):
Phone Model
Firmware Name
SIP-T23 (P/G)
44.x.x.x.rom
To upgrade the IP phones’ firmware in batch via auto provisioning, ask the distributor for
the firmware file, upload it to the provisioning server, and then specify the access URL in
configuration files.
##Specify the access URL of the firmware file.
firmware.url =
For example, enter “tftp://admin:password@192.168.1.100/44.80.0.1.rom” (“admin” is
replaced by the authentication user name and “password” is replaced by the
authentication password) in the “firmware.url =” field. During the auto provisioning
process, the IP phone connects to the provisioning server “192.168.1.100”, and
downloads the firmware file “44.80.0.5.rom”.
For more information on the parameter, refer to Description of Configuration Parameters
in CFG Files on page 81.

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