Yealink Device Comparison
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Product
![office phone,Wired phone,Corded Phone](https://www.yealink.com/website-service/attachment/product/image/20220413/202204130217126152817ec9f47ea84ae0e802f71726b.png)
SIP- T31
Dual-line entry level IP phone
![](https://www.yealink.com/website-service/attachment/product/image/20240202/20240202094434900780d656f4e82b89c769dea96f25d.png)
SIP-T44U
SIP-T44U
![Yealink Ruggedized DECT Handset](https://www.yealink.com/website-service/attachment/product/image/20220627/202206270636362620ff8f8fa408fba84d013ad9b0f58.png)
W57R
W57R
All Specifications
Appearance
Key Features and Benefits
Keywords
Stronger Performance, More Possibilities,Superior HD Audio, Better Communication,
Classic Design, Practical Details,All-in-One Platform, Convenient Management
CommunicationsThe SIP-T44U IP phone is a feature-rich business tool for excellent communications and extended functionality. Integrated with Hall Switch, T44U gives you a quieter operation and environment. It is a 12-line IP phone that comes with a 2.8-inch color display with backlight and the EXP43 support.
Shock, dust and water proof,Freely mobile communication,DECT technology
Key Features
• Yealink HD Voice
• 2.3” 132x64-pixel graphical LCD with backlight
• Two-port 10/100M Ethernet Switch
• Up to 2 SIP accounts
• Local 5-way conferencing
• Support EHS Wireless Headset
• Unified Firmware
• Support YDMP/YMCS
• Stand with 2 adjustable angles
• Wall mountable
• 2.8” 320x240-pixel color LCD with backlight• Dual USB ports• Dual firmware images• T4U Auto-P template unified• T4U firmware unified• Up to 12 SIP accounts• PoE support• USB headset and EHS support• Wi-Fi via WF40/WF50• Bluetooth via BT40/BT41/BT51• Supports color-screen expansion modules• Stand with 2 adjustable angles• Wall mountable• Handset with hall switch2.8-inch ScreenOptima HD VoiceDual USB PortsAcoustic ShieldUnified FirmwareGigabitExpansion Module
• Rugged DECT handset with IP54 protection rating
• Scratch resistant, disinfectant resistant
• 1.8’’ 128 x 160 TFT color screen with intuitive user interface
• HD audio and Flexible Noise Reduction (FNR)
• Vibration alarm
• Up to 40-hour talking time
• Up to 575-hour standby time
• Keypad backlight and keypad lock
• Fully compatible with Yealink W80/W90 Multi-Cell System for seamless roaming and handover
Overview
Content Sharing
-
Camera
-
Operating System
Linux Based
Interface
LCD Display
2.3” 132x64-pixel graphical LCD
LCD Type
Fixed
LED Indicators
√
Line Keys
2
Memory Keys
2
Expansion Module/Microphone (Accessory, purchased separately)
-
Foot Stand
2 Adjustable Angles
Audio Features
HD Voice
HD handset, HD speaker
Speakerphone
Full-duplex
Wideband Codec
G.722, Opus
Narrowband Codec
G.711(A/µ), G.729, G.729A, G.726, iLBC, G.723.1
HAC Handset
-
Acoustic Shield
-
Yealink Noise Proof
-
Video Features
Video Resolution
-
Video Codecs
-
Connectivity
USB Port (2.0 Compliant)
-
Ethernet Port
2 x RJ45 10/100M Ethernet ports
Handset Port (RJ-9)
√
Headset Port (RJ-9)
√
PoE
-
Headset
EHS Wireless Headset
Bluetooth
-
Wi-Fi
-
HDMI
-
Wall Mountable
√
Corded-Cordless Phone
-
Door Phone Integration
-
Telephony Features
SIP Accounts
2
N-way Conferencing
Local 5-way Conferencing
![](https://www.yealink.com/website-service/attachment/product/image/20220523/2022052310362998192c2d3544547bef243b0cdf8e422.png)
![Appearance of SIP- T31 picture 1](https://www.yealink.com/website-service/attachment/product/image/20220523/2022052310362998192c2d3544547bef243b0cdf8e422.png)
![Appearance of SIP- T31 picture 2](https://www.yealink.com/website-service/attachment/product/image/20220523/20220523103630598aee8cbb499c9728e3c40afb126e.png)
![Appearance of SIP- T31 picture 3](https://www.yealink.com/website-service/attachment/product/image/20220523/202205231036299898c4781424f87a5766bea513f19af.png)
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