Yealink SIP-T42S User Manual

User Guide for the SIP-T42S IP Phone
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network that the IP phone automatically connects to.
- To delete the saved wireless network profile(s):
1) Select Delete or Delete All.
If you delete your wireless network profile from your phone, you need to
manually connect to it next time.
Disconnecting the Wireless Network Connection
To disconnect wireless network via phone user interface:
1. Press Menu->Settings->Basic Settings->Wi-Fi->X Available Network(s) (X represents
the number of available networks)
2. Select the connected wireless network, and then press the Disconnect soft key.
The wireless network is disconnected. You can press the Connect soft key to connect
again.
Deactivating the Wi-Fi Mode
To deactivate the Wi-Fi mode via phone user interface:
1. Press Menu->Settings->Basic Settings->Wi-Fi.
2. Press or , or the Switch soft key to select Off from the Wi-Fi field.
3. Press the Save soft key to accept the change.
Wi-Fi is configurable via web user interface at the path Network->Wi-Fi.
Registration
Generally, your phone will be deployed with multiple other phones. In this case, your system
administrator will configure the phone parameters beforehand, so that after you start up your
phone, the phone will be registered and ready for use. The SIP-T42S IP phone supports up to 12
accounts. If your phone is not registered, you may have to register it. For more information on
how to register your phone, refer to Account Management on page 80.

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