*** Note- This Model Replaces T42S ***
A Well-Rounded SIP Phone for Clear Communications
The SIP-T43U IP phone is a feature-rich business tool for excellent communications and extended functionality. It is a 12-line IP phone that comes with a 3.7-inch large black-and-white screen and the EXP43 support. United Yealink Optima HD Voice technology and wideband codec of Opus, the T43U awards you the superb audio quality and crystal-clear voice communications. The phone feels quicker and more responsive when performing call features. Moreover, the T43U puts dual USB ports in a phone that makes Bluetooth, Wi-Fi, USB headset and USB recording come true, and you can use any two of them freely according to your needs. The Yealink new T4U series offers the same elegant appearance as the T4 line, but with improvements for greater interoperability and better collaboration.
Features
• 3.7′ 360×160-pixel graphical LCD with
backlight
• Dual USB ports
• Dual firmware images
• Opus codec support
• T42U (pending)/T43U/T46U/T48U Auto-P template unified
• T42U (pending)/T43U/T46U/T48U firmware unified
• Up to 12 SIP accounts
• PoE support
• USB headset and EHS support
• Wi-Fi via WF40/WF50
• Bluetooth via BT40/BT41
• Supports color-screen expansion modules
• Stand with 2 adjustable angles
• Wall mountable
Product Last Updated: 10/04/2026
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