Efficient Deployment and Management
Yealink T4U series supports effortless mass deployment and Zero Touch Provisioning with Yealink's Redirection and Provisioning Service (RPS) and Boot mechanism, making the device management labor-saving and efficient for the administrators.

Color-screen Expansion Module EXP43
The 4.3-inch color screen expansion module is designed to offer advanced call handling capabilities with its simplified UI and up to 60 programmable keys for various features.
Features
Handset type
Wireless handset
Expansion module support
Yes
Product colour
Grey
Technical details
Handset type
Wireless handset
Speakerphone
Yes
Expansion module support
Yes
Harmonized System (HS) code
85171800
Security
Security algorithms
AES, HTTPS, SRTP, TLS
Design
Product type
IP Phone
Handset type
Wireless handset
Product colour
Grey
Phone features
Number of VoIP accounts
16
Redialing
Yes
Phonebook capacity
1000 entries
Conference call
Yes
Caller ID
Yes
Call waiting
Yes
Call hold
Yes
Call forwarding
Yes
Display
Touchscreen
No
Display resolution
480 x 272 pixels
Display diagonal
10.9 cm (4.3")
Display
LCD
Backlight display
Yes
Audio
Voice codecs
AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Speakerphone
Yes
Network
Ethernet LAN interface type
Gigabit Ethernet
Ethernet LAN data rates
10,100,1000 Mbit/s
Wi-Fi
Yes
Security algorithms
AES, HTTPS, SRTP, TLS
Ethernet LAN
Yes
Bluetooth
Yes
Colour
Product colour
Grey
Ports & interfaces
USB 2.0 ports quantity
2
Expansion module support
Yes
Ethernet LAN (RJ-45) ports
2
Power
Power over Ethernet (PoE)
Yes
AC adapter input voltage
100 - 240 V
Operational conditions
Operating temperature (T-T)
0 - 40 °C
Operating relative humidity (H-H)
10 - 95%
Weight & dimensions
Width
244 mm
Depth
213 mm
Height
185 mm
Packaging content
Number of handles included
1 pc(s)
Logistics data
Harmonized System (HS) code
85171800
6938820000000
SIP-T46U