Yealink Device Comparison
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Product
![Yealink DECT IP Phone](https://www.yealink.com/website-service/attachment/product/image/20220627/2022062706364818809214acd41ae8c650b555fcdae64.png)
W77P
Professional Ruggedized DECT IP Phone System
![](https://www.yealink.com/website-service/attachment/product/image/20240202/202402020944247578ae6a9344cff9f088a4ed3f725eb.png)
SIP-T44W
SIP-T44W
![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
Twenty Simultaneous Calls,IP54,HD Audio ,TLS&SRTP Security Encryption,Backup System,Centralized Deployment,Quick Charge,Vibration Alarm,OTA Upgrade,Long Standby Time
•Easy Customization and High Expansibility
•HD Audio
•Wireless Transmission
•Efficient Installation and Provisioning
•Secure Transport and Interoperability
Easy Customization and High Expansibility--•HD Audio •Efficient Installation and Provisioning •Secure Transport and Interoperability
Key Features
• High-performance SIP cordless phone system
• 1.8" 128 x 160 TFT color screen with intuitive user interface
• Ruggedized DECT handset with IP54 protection rating
• Up to 20 simultaneous calls
• Up to 10 DECT cordless handsets
• Up to 10 SIP accounts
• Noise Reduction System
• FNR (Flexible Noise Reduction)/Noise Cancellation
• Up to 40-hour talking time
• Up to 575-hour standby time
• Quick charging: 10-minute charging time for 2-hour talking time
• TLS and SRTP security encryption
• Vibration alarm guarantees you do not miss any call, even in noisy situations
• Wall mountable charger
• Maximum DECT radio coverage: 50 meters indoors, 300 meters outdoors
• Energy-saving ECO features
• DECT technology: Yealink DECT technology focuses on high-quality Audio VoIP (wideband) and bit-rate data applications. However, we are incompatible with third-party DECT devices (base station, handset, etc.).
• 2.8” 320x240-pixel color LCD with backlight
• Dual USB ports
• Dual firmware images
• Built-in Bluetooth 4.2
• Built-in dual band 2.4G/5G Wi-Fi (802.11a/b/g/
n/ac)
• T4U Auto-P template unified
• T4U firmware unified
• Up to 12 SIP accounts
• PoE support
• USB headset and EHS support
• Supports color-screen expansion modules
• Stand with 2 adjustable angles
• Wall mountable
• Handset with hall switch
• 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
Interface
LCD Display
2.8” 320x240-pixel color LCD with backlight
2.7" 192x64-pixel graphical LCD
LCD Type
Mi
Fixed
LED Indicators
LED for call and message waiting indication
√
Line Keys
8 line keys with LED
6
Memory Keys
15 (3 pages of 5 keys)
Expansion Module/Microphone (Accessory, purchased separately)
Dual-port Gigabit Ethernet
• Power over Ethernet (IEEE 802.3af), Class 3
• 2 x USB port (2.0 compliant)
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port
-
Foot Stand
Stand with 2 adjustable angles
2 Adjustable Angles
Audio Features
HD Voice
HD handset, HD speaker
HD Speaker,HD Handse
Speakerphone
Full-duplex hands-free speakerphone with AEC
Full-duplex
Wideband Codec
AMR-WB (optional), G.722
G.722,Opus
Narrowband Codec
AMR-NB (optional), PCMU
G.711(A/µ), G.729A/B, G.726,G.723.1, iLBC, Opus
HAC Handset
Hearing aid compatible (HAC) handset
√
Acoustic Shield
√
√
Yealink Noise Proof
√
-
Video Features
Video Resolution
-
-
Video Codecs
-
-
Connectivity
USB Port (2.0 Compliant)
2 x USB port (2.0 compliant)
2
Ethernet Port
Ethernet Cable (2m CAT5E UTP Cable)
Dual-port Gigabit Ethernet
Handset Port (RJ-9)
1 x RJ9 (4P4C) handset port
√
Headset Port (RJ-9)
1 x RJ9 (4P4C) headset port
√
PoE
2.0W - 5.2W
√
Headset
Bluetooth headsets
USB headset
USB Headset
Bluetooth
USB/Bluetooth connectivity
√ (via BT40/BT41)
Wi-Fi
√
√ (via WF40/WF50)
HDMI
-
-
Wall Mountable
√
√
Corded-Cordless Phone
-
-
Door Phone Integration
-
-
Telephony Features
SIP Accounts
Up to 12 SIP accounts
12
N-way Conferencing
5-way conference call
5-way Conferencing
![](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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