Yealink SIP-T42S User Manual

Customizing Your Phone
37
Language
The default language of the phone user interface is English. If the language of your web browser
is not supported by the phone, the web user interface will use English by default. You can
change the language for the phone user interface and the web user interface respectively.
To change the language for the phone user interface:
1. Press Menu->Settings->Basic Settings->Language.
2. Press or to select the desired language.
3. Press the Save soft key to accept the change.
Text displayed on the phone user interface will change to the selected language.
To change the language for the web user interface:
1. Select the desired language from the pull-down list at the top-right corner of web user
interface.
Text displayed on the web user interface will change to the selected language.
Time & Date
The time and date are displayed on the LCD screen when the phone is idle. You can configure
the phone to obtain the time and date from the Simple Network Time Protocol (SNTP) server
automatically, or configure the date and time manually. If the phone cannot obtain the time and
date from the SNTP server, contact your system administrator for more information.
To configure the SNTP settings via phone user interface:
1. Press Menu->Settings->Basic Settings->Time & Date->SNTP Settings.
2. Press or , or the Switch soft key to select the time zone that applies to your area
from the Time Zone field.

Yealink SIP-T42S Specifications

General

Manual	Yes
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Lines quantity	12 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	2.7 \
Display resolution	192 x 64 pixels
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Volume control	Digital
Number of programmable keys	6
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS

Weight and Dimensions

Depth	189 mm
Width	212 mm
Height	175 mm
Package depth	223 mm
Package width	246 mm
Package height	120 mm