Yealink SIP-T23G User Manual

User Guide for the SIP-T23P/G IP Phone
166
 If your SIP-T23P/G IP phone is powered from PoE, ensure you use a PoE-compliant
switch or hub.
Why does the phone display "Network unavailable"?
 Ensure that the Ethernet cable is plugged into the Internet port on the phone and
the Ethernet cable is not loose.
 Ensure that the switch or hub in your network is operational.
 Contact your system administrator for more information.
Why doesn’t the phone display time and date correctly?
Check if you have configured the phone to obtain the time and date from the SNTP
server automatically. If the phone fails to connect to the SNTP server, contact your
system administrator for more information. You can also configure the time and date
manually. For more information, refer to Time & Date on page 37.
Why can’t I access web user interface using the default administrator user name and
password (admin/admin)?
 It is case-sensitive, ensure the case is correct.
 Ensure the password has not been changed.
 If the password has been changed, but the computer remembers the old password,
try to clear the browser cache and try again or select another browser to login.
How to change the user password?
To change the user password via web user interface:
1. Click on Security->Password.
2. Select user from the pull-down list of User Type.
3. Enter the new user password in the New Password field and Confirm Password
field.

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