Yealink SIP-T43U SIP Phone

The Yealink SIP-T43U is a professional-grade IP phone designed for clear, responsive, and feature-rich voice communication in business environments. With support for up to 12 SIP accounts and powered by Yealink’s Optima HD Voice technology, the T43U delivers outstanding audio quality using advanced codecs such as Opus. The device features a 3.7-inch backlit graphical display, dual USB ports, and wide accessory support including Wi-Fi, Bluetooth, USB headsets, and expansion modules. It also offers dual firmware images and unified auto-provisioning templates, ensuring seamless integration, simplified management, and long-term reliability within enterprise phone systems.

Product Features

Professional IP voice communication
Delivers superior audio with Optima HD Voice and Opus codec for crisp, natural-sounding calls.

12 SIP account support
Handles multiple extensions or departmental lines for power users or shared desks.

3.7-inch backlit graphical display
360×160-pixel screen for clear visibility of call details and settings.

Dual USB ports
Enables connection to Bluetooth, Wi-Fi dongles, USB headsets, or USB call recording devices.

Bluetooth and Wi-Fi support
Compatible with Yealink BT40/BT41 and WF40/WF50 dongles for wireless connectivity.

USB headset and EHS40 support
Integrates with wired and wireless headset systems for hands-free operation.

Dual firmware images
Enhances reliability and allows easy fallback in firmware upgrades.

Unified auto-provisioning templates
Streamlines deployment across multiple T4U-series phones using consistent configuration files.

Expansion module support
Compatible with EXP43 color-screen expansion module for receptionists or high-volume users.

Gigabit Ethernet with PoE
Supports fast network speeds and simplifies cabling with Power over Ethernet capability.

Adjustable stand and wall mountable
Flexible placement with dual-position desk stand and wall-mounting options.

Modern, business-ready design
Elegant and ergonomic look that fits seamlessly into any corporate environment.

Product Specifications

• Display: 3.7-inch 360×160-pixel graphical LCD with backlight
• Construction: Desktop/tabletop IP phone
• SIP account support: Up to 12 accounts
• Audio technology: Yealink Optima HD Voice, Opus codec
• Connectivity: Dual USB ports, RJ-45 Gigabit Ethernet
• Wireless support: Bluetooth (via BT40/BT41), Wi-Fi (via WF40/WF50)
• Headset support: USB headset, EHS via EHS40
• Expansion module support: Yes (EXP43)
• Firmware: Dual images with unified T4U-series template
• Mounting options: Desk stand with 2 adjustable angles, wall mountable
• Power: PoE (Power over Ethernet)
• Color: Black