Yealink SIP-T2 Series

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series IP Phones
170
E2 IP phones, EXP20 connected to SIP-T29G/T27P/T27G IP phones and EXP40 connected to
SIP-T48G/T48S/T46G/T46S IP phones. Make sure the expansion module has been connected to
the IP phone before adjustment.
It is not applicable to SIP-T42G/T42S/T41P/T41S IP phones.
Procedure
Contrast can be configured using the following methods.
Central Provisioning
(Configuration File)
<y0000000000xx>.cfg
Configure the contrast of the LCD
screen.
Parameter:
phone_setting.contrast
Web User Interface
Configure the contrast of the LCD
screen.
Navigate to:
http://<phoneIPAddress>/servlet?p
=settings-preference&q=load
Phone User Interface
Configure the contrast of the LCD
screen.
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.
For T48G/T48S/T46G/T46S IP phones, it configures the LCD’s contrast of the connected
EXP40 only.
For T29G IP phones, it configures the LCD’s contrast of the connected EXP20 only.
For T27P/G IP phones, it configures the LCD’s contrast of the IP phone and the connected
EXP20.
For T40P/T40G/T23P/T23G/T21(P) E2/T19(P) E2 IP phones, it configures the LCD’s contrast of
the IP phone.
Note: We recommend that you set the contrast of the LCD screen to 6 as a more
comfortable level. It is not applicable to SIP-T42G/T42S/T41P/T41S IP phones.
Web User Interface:
For SIP-T48G/T48S/T46G/T46S/T29G:
None