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Yealink SIP-T42S User Manual

Yealink SIP-T42S
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User Guide for the SIP-T42S IP Phone
148
Intercom
Intercom is a useful feature in an office environment to quickly connect with the operator or the
secretary. You can press the intercom key to automatically connect with a preconfigured target
extension for outgoing intercom calls, and the target extension will automatically answer
incoming intercom calls by default. You can also use intercom key to monitor a specific line for
status changes on the phone.
Note
Configuring the Intercom Feature on the IP Phone
Configuring an Intercom Key
To configure an intercom key via phone user interface:
1. Press Menu->Features->DSS Keys.
2. Select the desired DSS key.
3. Press or , or the Switch soft key to select Intercom from the Type field.
4. Select the desired line from the Account ID field.
5. (Optional.) Enter the string that will appear on the LCD screen in the Label field.
6. Enter the target extension number in the Value field.
7. (Optional.) Enter the directed call pickup code in the Extension field.
If it is configured, when the target extension receives an incoming call, the supervisor can
press the intercom key to pick up the call directly. Contact your system administrator for
more information.
8. Press the Save soft key to accept the change or the Back soft key to cancel.
Intercom key is configurable via web user interface at the path Dsskey->Line Key.
Incoming Intercom Calls
The SIP-T42S IP phone supports automatically to answer an incoming intercom call by default.
The phone automatically plays a warning tone when it receives an incoming intercom call. In
addition, you can enable the phone to mute the microphone when it automatically answers an
incoming intercom call. You can also enable the phone to automatically answer an incoming
intercom call while there is already an active call on the phone. The active call is then placed on
hold.
Intercom is not available on all servers. Contact your system administrator for more information.

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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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