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Yealink SIP-T42S Quick Reference Guide

Yealink SIP-T42S
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PHONE LAYOUT
Line keys
Line keys appear to the side of your
screen and indicate the status of
the call being controlled by the key.
When the key is controlling an active
call, it is solid green. When the key
is controlling a call on hold, it is
blinking green.
Soft keys
Soft keys appear at the bottom
of your screen and their functions
change depending on where you
are in a call sequence.
Watching your soft keys is one of
the most helpful things you can do
when using your phone. In almost all
cases, the thing you are most likely
to do next in a call sequence will
appear as a soft key.
Buttons
Physical buttons always perform the
function for which they are labeled.
For full user guides and video tutorials, visit help.ena.com and select ENA SmartVoice
Yealink SIP-T42S Quick Reference Guide
PLACE CALLS
Using the handset
Dial the number you are calling, then pick up the handset.
Note: You may place a call by picking up the handset before dialing. Just be aware, the system will attempt to com-
plete the call after a slight pause in entering digits on the dialpad.
Using the speakerphone
With the handset in the cradle, dial the number you are calling then
press or the Send soft key.
ANSWER CALLS
Using the handset
When a call comes in, pick up the handset.
Using the speakerphone
When a call comes in, press , the blinking line key, or the
Answer soft key.
Answer a second call
When a second call comes in, press the Answer soft
key or the blinking line key. The active call is
automatically placed on hold.
HOLD AND RESUME CALLS
Place a call on hold
Press the Hold soft key during an active call. The line key controlling that call will blink.
Resume a held call
Press the blinking line key or the Resume soft key.
Note: You may need to press or on the navigation dial to select the desired call before you see the Resume soft
key.

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Yealink SIP-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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