Yealink T42S How To Configure

2/28/2019 Auto Provision your Yealink T4 series IP Phone for 3CX v15
https://www.3cx.com/sip-phones/yealink-t4-series/ 1/5
How to configure T4 Series for 3CX
This guide applies to v15.5 only.
On this topic
Supported Models: Yealink T4 series
Step 1: Upgrade to the Required firmware
Step 2: Factory Reset the IP Phone
Step 3: Provision the phone
Local LAN or SBC: Provision via Plug’n’Play
Remote phones: Provision via RPS server
Step 4: Extended Phone Configuration
Known Limitations
Supported Models: Yealink T4 series
● Yealink T40G
● Yealink T40P
● Yealink T41P
● Yealink T41S
● Yealink T42G
● Yealink T42S
● Yealink T46G
● Yealink T46S
● Yealink T48G
● Yealink T48S
Step 1: Upgrade to the Required firmware
Ensure that the phone is running on the required firmware by 3CX. In case the device needs manual updating
download the latest distributed required firmware by 3CX here. Read how to check what firmware the phones

Yealink 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