Yealink T29G Administrator's Guide

Configuring Basic Features
65
Contrast determines the readability of the texts displayed on the LCD screen. Adjusting
the contrast to a comfortable level can optimize the screen viewing experience. When
configured properly, contrast allows users to read the LCD’s display with minimal
eyestrain. You can configure the LCD’s contrast of SIP-T27P, SIP-T23P/G and SIP-T21(P) E2
IP phones, EXP39 connected to SIP-T29G/T27P IP phones and EXP40 connected to
SIP-T48G/T46G IP phones. Make sure the expansion module has been connected to the
IP phone before adjustment.
Procedure
Contrast can be configured using the configuration files or locally.
Configuration File
<y0000000000xx>.cfg
Configure the LCD’s contrast of
SIP-T27P, SIP-T23P/G and SIP-T21(P)
E2 IP phones, EXP39 connected to
SIP-T29G/T27P IP phones and
EXP40 connected to
SIP-T48G/T46G IP phones.
Parameter:
phone_setting.contrast
Local
Web User Interface
Configure the LCD’s contrast of
SIP-T27P, SIP-T23P/G and SIP-T21(P)
E2 IP phones.
Navigate to:
http://<phoneIPAddress>/servlet
?p=settings-preference&q=load
Phone User Interface
Configure the LCD’s contrast of
SIP-T27P, SIP-T23P/G and SIP-T21(P)
E2 IP phones, EXP39 connected to
SIP-T29G/T27P IP phones and
EXP40 connected to
SIP-T48G/T46G IP phones.
Details of the Configuration Parameter:
Parameter
Permitted Values
Default
phone_setting.contrast
Integer from 1 to 10
6
Description:
Configures the contrast of the LCD screen.

Yealink T29G Specifications

General

VoIP Protocols	SIP
PoE Support	Yes (IEEE 802.3af)
Headset Port	RJ9
Bluetooth	No
Weight	1.04 kg
Display	4.3" color display with backlight, 480 x 272 pixels
Line Keys	10 line keys
Ethernet Ports	2 x 10/100/1000 Mbps
Audio Codecs	G.722, G.711, G.729, G.726, iLBC
USB Port	1 x USB 2.0
Expansion Module Support	Yes, supports up to 6 EXP20 expansion modules
EHS	Yes
Supported Protocols	SIP
Operating Temperature	-10~50°C
Humidity	10% to 95% (non-condensing)