Yealink Device Comparison
CATEGORY
Product
W78P
Premium DECT IP Phone System
CP935W
CP935W
SIP-T44W
SIP-T44W
All Specifications
Appearance
Key Features and Benefits
Keywords
Twenty Simultaneous Calls,HD Audio ,TLS&SRTP Security Encryption,Backup System,Centralized Deployment,Quick Charge,Vibration Alarm,OTA Upgrade,Long Standby Time,bluetooth 5.1
Modest Design, Easy-to-Use User Interface,Built-in Battery, Wi-Fi and DECT to Minimize Deployment Costs,HD Audio, Smooth Communication,Rich Features and High Expandability
•Easy Customization and High Expansibility
•HD Audio
•Wireless Transmission
•Efficient Installation and Provisioning
•Secure Transport and Interoperability
Key Features
High-performance SIP cordless phone system
2.4" 240 x 320 TFT color screen with intuitive user interface
Up to 20 simultaneous calls
Up to 10 DECT cordless handsets
Up to 10 SIP accounts
Flexible Noise Reduction (FNR)/Noise Cancellation
Up to 21-hour talking time (in ideal conditions)
Up to 166-hour standby time (in ideal conditions)
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
4-inch multi-touch screen with 480x800 resolution
• Optimal HD audio, full duplex technology
• Yealink Noise Proof Technology
• Built-in rechargeable lithium battery
• Up to 15 hours talk time (in ideal conditions)
• Up to 75 hours standby time in Wi-Fi mode (in ideal conditions)
• 20-foot (6-meter) and 360° voice pickup
• Built-in 6-microphone array for voice pickup
• 5-way conference call
• Hybrid UC meeting
• Built-in Wi-Fi (2.4GHz/5GHz, 802.11a/b/g/n)
• Built-in Bluetooth 4.2
• 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
Overview
Content Sharing
-
√
Camera
-
-
Operating System
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.).
Linux
Interface
LCD Display
4'' 480x800 capacitive touch screen
2.8” 320x240-pixel color LCD with backlight
LCD Type
Fixed
Mi
LED Indicators
-
LED for call and message waiting indication
Line Keys
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8 line keys with LED
Memory 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
Audio Features
HD Voice
Optimal HD Audio
HD handset, HD speaker
Speakerphone
Full-duplex
Full-duplex hands-free speakerphone with AEC
Wideband Codec
G.722,G722.1C,Opus
AMR-WB (optional), G.722
Narrowband Codec
G.711(A/µ), G726, G729, G723, iLBC
AMR-NB (optional), PCMU
HAC Handset
-
Hearing aid compatible (HAC) handset
Acoustic Shield
Acoustics Fabric
√
Yealink Noise Proof
√
√
Video Features
Video Resolution
-
-
Video Codecs
-
-
Connectivity
USB Port (2.0 Compliant)
1
2 x USB port (2.0 compliant)
Ethernet Port
-
Ethernet Cable (2m CAT5E UTP Cable)
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
Bluetooth
Built-in Bluetooth 4.2
USB/Bluetooth connectivity
Wi-Fi
Built-in Wi-Fi (2.4GHz/5GHz, 802.11a/b/g/n)
√
HDMI
-
-
Wall Mountable
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√
Corded-Cordless Phone
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-
Door Phone Integration
-
-
Telephony Features
SIP Accounts
1
Up to 12 SIP accounts
N-way Conferencing
5-way Conferencing
5-way conference call
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