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Yealink T42S User Manual

Yealink T42S
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Before You Begin
10
Before You Begin
This guide provides information you need to quickly use your new phone.
Firstly, verify with your system administrator that the IP network is ready for phone configuration. Also, be sure to read
the Quick Start Guide which can be found in your phone package before you set up and use the phone. As you read
this guide, keep in mind that some features are only configurable by your system administrator or determined by your
phone environment. As a result, some features may not be enabled or may be operated differently on your phone. Addi-
tionally, the examples and graphics in this guide may not directly reflect what is displayed or is available on your
phone screen.
Note
This guide mainly takes T46S phones as an example.
This user guide contains information for the following Yealink products:
l T48S IP phones
l T48G IP phones
l T46S IP phones
l T46G IP phones
l T42S IP phones
l T42G IP phones
l T41S IP phones
l T41P IP phones
l T40P IP phones
l T40G IP phones
Related Documentation
You can view more types of documents to make the phone to perform more functions.
You can obtain additional information on the following phones from Yealink Support:
l Ultra-elegant Gigabit IP Phone T48S
l Ultra-elegant Gigabit IP Phone T48G
l Ultra-elegant Gigabit IP Phone T46S
l Ultra-elegant Gigabit IP Phone T46G
l Ultra-elegant Gigabit IP Phone T42S
l Ultra-elegant Gigabit IP Phone T42G
l Ultra-elegant IP Phone T41S
l Ultra-elegant IP Phone T41P
l Enterprise IP Phone T40P
l Enterprise IP Phone T40G
The following types of related documents are available on each support page on Yealink support page:
l Release Notes, which details bug fixes and feature enhancements when an update is released.
l Quick Start Guide, which describes how to assemble your phone and configure the basic phone features.

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Yealink T42S Specifications

General IconGeneral
ManualYes
Cables includedLAN (RJ-45)
Number of handles included1 pc(s)
Lines quantity12 lines
Phonebook capacity1000 entries
Number of VoIP accounts12
MountingDesk/Wall
Handset typeWired handset
Product typeIP Phone
Product colorBlack
Voice codecsCNG, 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 diagonal2.7 \
Display resolution192 x 64 pixels
AC adapter input voltage100 - 240 V
AC adapter output current1.2 A
AC adapter output voltage5 V
Dual-Tone Multi-Frequency (DTMF) modesIn-band, Out-of band, SIP info
Volume controlDigital
Number of programmable keys6
USB 2.0 ports quantity1
Ethernet LAN (RJ-45) ports2
Networking standardsIEEE 802.3af
Ethernet LAN data rates10, 100 Mbit/s
Ethernet LAN interface typeFast Ethernet
Supported network protocolsSIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS
Weight and Dimensions IconWeight and Dimensions
Depth189 mm
Width212 mm
Height175 mm
Package depth223 mm
Package width246 mm
Package height120 mm

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