Yealink Device Comparison
CATEGORY
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
![Business Phone System,IP phone system,business desk phone](https://www.yealink.com/website-service/attachment/product/image/20220413/202204130217126152817ec9f47ea84ae0e802f71726b.png)
SIP- T31P
SIP- T31P
![SIP Phone,desk Phones,office Phone](https://www.yealink.com/website-service/attachment/product/image/20220412/202204120121401730317f6294f2c97fed723ba2f1ba0.png)
SIP- T42U
SIP- T42U
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
Stronger Performance, More Possibilities,Superior HD Audio, Better Communication,Classic Design, Practical Details,All in One Platform, Convenient Management
Easy Customization and High Expansibility--•HD Audio •Efficient Installation and Provisioning •Secure Transport and Interoperability
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
• Yealink HD Voice
• 2.3” 132x64-pixel graphical LCD with backlight
• Two-port 10/100M Ethernet Switch
• PoE support
• 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
• 2.7" 192x64-pixel graphical LCD with backlight
• Dual USB ports
• Dual firmware images
• T4U Auto-P template unified
• T4U firmware unified
• Up to 12 SIP accounts
• PoE support
• Dual-port Gigabit Ethernet
• USB headset and EHS support
• Wi-Fi via WF40/WF50
• Bluetooth via BT40/BT41/BT52
• Stand with 2 adjustable angles
• Wall mountable
• Handset with hall switch
Overview
Content Sharing
-
-
-
Camera
-
-
-
Operating System
Linux Based
Linux Based
Linux Based
Interface
LCD Display
2.3” 132x64-pixel graphical LCD
2.3” 132x64-pixel graphical LCD
2.7" 192x64-pixel graphical LCD
LCD Type
Fixed
Fixed
Fixed
LED Indicators
√
√
√
Line Keys
2
2
6
Memory Keys
2
2
15 (3 pages of 5 keys)
Expansion Module/Microphone (Accessory, purchased separately)
-
-
-
Foot Stand
2 Adjustable Angles
2 Adjustable Angles
2 Adjustable Angles
Audio Features
HD Voice
HD handset, HD speaker
HD handset, HD speaker
HD Speaker,HD Handse
Speakerphone
Full-duplex
Full-duplex
Full-duplex
Wideband Codec
G.722, Opus
G.722, Opus
G.722,Opus
Narrowband Codec
G.711(A/µ), G.729, G.729A, G.726, iLBC, G.723.1
G.711(A/µ), G.729, G.729A, G.726, iLBC, G.723.1
G.711(A/µ), G.729A/B, G.726,G.723.1, iLBC, Opus
HAC Handset
-
-
√
Acoustic Shield
-
-
√
Yealink Noise Proof
-
-
-
Video Features
Video Resolution
-
-
-
Video Codecs
-
-
Connectivity
USB Port (2.0 Compliant)
-
-
2
Ethernet Port
2 x RJ45 10/100M Ethernet ports
2 x RJ45 10/100M Ethernet ports
Dual-port Gigabit Ethernet
Handset Port (RJ-9)
√
√
√
Headset Port (RJ-9)
√
√
√
PoE
-
√
√
Headset
EHS Wireless Headset
EHS Wireless Headset
USB Headset
Bluetooth
-
-
√ (via BT40/BT41)
Wi-Fi
-
-
√ (via WF40/WF50)
HDMI
-
-
-
Wall Mountable
√
√
√
Corded-Cordless Phone
-
-
-
Door Phone Integration
-
-
-
Telephony Features
SIP Accounts
2
2
12
N-way Conferencing
Local 5-way Conferencing
Local 5-way Conferencing
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)
![](https://www.yealink.com/website-service/attachment/product/image/20220523/20220523103136768a99e93044945bbbecf9e7e33b3e8.png)
![Appearance of SIP- T31P picture 1](https://www.yealink.com/website-service/attachment/product/image/20220523/20220523103136768a99e93044945bbbecf9e7e33b3e8.png)
![Appearance of SIP- T31P picture 2](https://www.yealink.com/website-service/attachment/product/image/20220523/202205231031367575a8c410f4fce94a81d35b1cf5fdb.png)
![Appearance of SIP- T31P picture 3](https://www.yealink.com/website-service/attachment/product/image/20220523/20220523103136527794cc4c840469e8d211f4e55d254.png)
![](https://www.yealink.com/website-service/attachment/product/image/20220523/202205230841084923e7bee6b4d9ebfc6426f171ff07e.png)
![Appearance of SIP- T42U picture 1](https://www.yealink.com/website-service/attachment/product/image/20220523/202205230841084923e7bee6b4d9ebfc6426f171ff07e.png)
![Appearance of SIP- T42U picture 2](https://www.yealink.com/website-service/attachment/product/image/20220523/20220523084108615c5820a674111ae5eed0e733447a6.png)
![Appearance of SIP- T42U picture 3](https://www.yealink.com/website-service/attachment/product/image/20220523/20220523084108498f91bb80e4e929d35d0d079297fde.png)
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