Yealink Device Comparison
CATÉGORIE
Product
![Téléphone professionnel Prime pour offrir une productivité de bureau optimale](https://www.yealink.com/website-service/attachment/product/image/20220412/2022041202293737fa5e69b2470d9567ac379ec96ef3.png)
SIP-T57W
Téléphone VoIP professionnel de premier ordre
![Un téléphone IP d'entrée de gamme à double ligne plus puissantSystème téléphonique professionnel, système téléphonique IP, téléphone de bureau professionnel](https://www.yealink.com/website-service/attachment/product/image/20220413/202204130217126152817ec9f47ea84ae0e802f71726b.png)
SIP- T31P
SIP- T31P
![Téléphone SIP, téléphones de bureau, téléphone de bureau](https://www.yealink.com/website-service/attachment/product/image/20220412/202204120121401730317f6294f2c97fed723ba2f1ba0.png)
SIP- T42U
SIP- T42U
All Specifications
Appearance
Key Features and Benefits
Keywords
Key Features
Overview
Content Sharing
√
-
-
Camera
-
-
-
Operating System
Linux Based
Linux Based
Linux Based
Interface
LCD Display
7" 800 x 480 Pixels Color Display
2.3” 132x64-pixel graphical LCD
2.7" 192x64-pixel graphical LCD
LCD Type
Adjustable
Fixed
Fixed
LED Indicators
√
√
√
Line Keys
0
2
6
Memory Keys
29 Touch Keys
2
15 (3 pages of 5 keys)
Expansion Module/Microphone (Accessory, purchased separately)
Yealink EXP50
-
-
Foot Stand
1 Adjustable Angle
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, G729A, G.726, G.723.1, iLBC
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)
1
-
2
Ethernet Port
Dual-port Gigabit Ethernet
2 x RJ45 10/100M Ethernet ports
Dual-port Gigabit Ethernet
Handset Port (RJ-9)
√
√
√
Headset Port (RJ-9)
√
√
√
PoE
√
√
√
Headset
USB/Bluetooth/RJ9
EHS Wireless Headset
USB Headset
Bluetooth
Built-in Bluetooth 4.2
-
√ (via BT40/BT41)
Wi-Fi
Built-in(2.4G and 5G)
-
√ (via WF40/WF50)
HDMI
-
-
-
Wall Mountable
√
√
√
Corded-Cordless Phone
√
-
-
Door Phone Integration
-
-
-
Telephony Features
SIP Accounts
16
2
12
N-way Conferencing
10-way Conferencing
Local 5-way Conferencing
5-way Conferencing
![](https://www.yealink.com/website-service/attachment/product/image/20220523/2022052303290273ec9df6174f70975fbc0f22b66a93.png)
![Appearance of SIP-T57W picture 1](https://www.yealink.com/website-service/attachment/product/image/20220523/2022052303290273ec9df6174f70975fbc0f22b66a93.png)
![Appearance of SIP-T57W picture 2](https://www.yealink.com/website-service/attachment/product/image/20220523/20220523032902374c94666164ea8b430a424f6cc4c3f.png)
![Appearance of SIP-T57W picture 3](https://www.yealink.com/website-service/attachment/product/image/20220523/20220523032902338e44ebd814ecd8b50c3290457e8ba.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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