CommunicationsThe SIP-T44U IP phone is a feature-rich business tool for excellent communications and extended functionality. Integrated with Hall Switch, T44U gives you a quieter operation and environment. It is a 12-line IP phone that comes with a 2.8-inch color display with backlight and the EXP43 support.

Modest Design, Easy-to-Use User Interface，HD Audio, Smooth Communication，Rich Features and High Expandability

• 2.8” 320x240-pixel color LCD with backlight• Dual USB ports• Dual firmware images• T4U Auto-P template unified• T4U firmware unified• Up to 12 SIP accounts• PoE support• USB headset and EHS support• Wi-Fi via WF40/WF50• Bluetooth via BT40/BT41/BT51• Supports color-screen expansion modules• Stand with 2 adjustable angles• Wall mountable• Handset with hall switch2.8-inch ScreenOptima HD VoiceDual USB PortsAcoustic ShieldUnified FirmwareGigabitExpansion Module

• 4-inch multi-touch screen with 480x800 resolution • Optimal HD audio, full duplex technology • Yealink Noise Proof Technology • 20-foot (6-meter) and 360-degree voice pickup • Built-in 6-microphone array for voice pickup • Built-in 1-microphone array for noise cancellation • Power over Ethernet • 5-way conference call • Hybrid UC meeting • Built-in Wi-Fi (2.4GHz/5GHz, 802.11a/b/g/n) • Built-in Bluetooth 4.2 • Local 3-way PSTN conference via Yealink CPN10