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Yealink SIP-T42S User Manual

Yealink SIP-T42S
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Overview
7
LED Status
Description
phone)
Solid red (for monitoring SCA
phone)
The shared line is dialing.
The shared line is seized.
The shared line conversation is barged in by the other
shared line party.
Slow-flashing green (for local
SCA phone)
Slow-flashing red (for
monitoring SCA phone)
The shared line conversation is placed on public hold.
Slow-flashing green (for local
SCA phone)
Solid red (for monitoring SCA
phone)
The shared line conversation is placed on private hold.
For a multi-party call, all the shared line parties
participating in this call place the shared line
conversation on hold.
Line key LED (associated with a bridged line)
The local BLA phone indicates the phone is involved in a BLA call, while the monitoring BLA
phone indicates the phone is not involved in the BLA call.
LED Status
Description
Off
The bridged line is idle.
Fast-flashing green
The bridged line receives an incoming call.
Solid green (for local BLA
phone)
Solid red (for monitoring BLA
phone)
The bridged line is in conversation.
The bridged line is dialing.
The bridged line is seized.
Slow-flashing green (for local
BLA phone)
Slow-flashing red (for
monitoring BLA phone)
The bridged line conversation is placed on hold.
Note
User Interfaces
Two ways to customize configurations of your SIP-T42S IP phone:
The user interface on the IP phone.
The user interface in a web browser on your PC.
The hardware components keypad and LCD screen constitute the phone user interface, which
allows the user to execute all call operation tasks and basic configuration changes directly on
The above introduces the default LED status. The statuses of the power indicator LED and BLF key
LED are configurable via web user interface. You can also customize the BLF key LED status and
BLF key behavior. For more information, contact your system administrator.

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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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