Yealink Device Comparison of IP Phones Appearance between W77P and SIP-T44W and SIP- T31G

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

Stronger Performance, More Possibilities，Superior HD Audio, Better Communication，Classic Design, Practical Details，All in One Platform, Convenient Management

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

• Yealink HD Voice • 2.3” 132x64-pixel graphical LCD with backlight • Dual-port Gigabit Ethernet • 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

Overview

Content Sharing

√

-

Camera

-

Operating System

Linux Based

Interface

LCD Display

2.8” 320x240-pixel color LCD with backlight

• 2.3” 132x64-pixel graphical LCD

LCD Type

Mi

Fixed

LED Indicators

LED for call and message waiting indication

√

Line Keys

8 line keys with LED

2

Memory Keys

2

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

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.729, G.729A, G.726, iLBC, G.723.1

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)

-

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

EHS Wireless Headset

Bluetooth

USB/Bluetooth connectivity

-

Wi-Fi

√

-

HDMI

-

Wall Mountable

√

Corded-Cordless Phone

-

Door Phone Integration

-

Telephony Features

SIP Accounts

Up to 12 SIP accounts

2

N-way Conferencing

5-way conference call

Local 5-way conferencing

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