Yealink SIP-T43U 12-Line Gigabit IP Desk Phone

The Yealink SIP-T43U is a feature-rich business IP phone designed for administrative professionals and active call handlers. Equipped with a 3.7-inch backlit graphical LCD screen and support for up to 12 SIP accounts, it features dual USB ports, dual Gigabit Ethernet ports, and Yealink Optima HD audio technology for clear, dependable everyday communication.

Key Features & Benefits

• 3.7-Inch Backlit Graphical Screen: The 370x160 pixel backlit display offers clear visibility for call information, directory lookup, and customizable paperless DSS line keys.

• Dual USB 2.0 Expansion Ports: Unlocks versatile connectivity options by supporting USB headsets, call recording to flash drives, optional Wi-Fi/Bluetooth dongles (WF40/WF50, BT41/BT51), and Yealink EXP43 expansion modules.

• Optima HD Voice & Acoustic Shield: Combines wideband audio hardware with Yealink Acoustic Shield noise filtering to suppress background distraction during active calls.

• 12 SIP Accounts & Paperless Keys: Manages up to 12 VoIP accounts with 21 programmable line keys spread across 3 page views for fast speed dialing, BLF monitoring, and call routing.

• Dual Gigabit Ethernet & PoE: Two 10/100/1000 Mbps network ports deliver high-speed data pass-through to a connected PC while supporting Power over Ethernet (PoE).

Technical Specifications

• Display: 3.7-inch (370 x 160 pixels) graphical LCD screen with backlight

• SIP Accounts: Up to 12 VoIP accounts / lines

• Network Interfaces: Dual-port Gigabit Ethernet (10/100/1000 Mbps)

• USB Ports: 2 x USB 2.0 (Type-A)

• Audio Features: Yealink Optima HD Voice, Acoustic Shield noise filtering, Opus wideband codec, full-duplex speakerphone with Acoustic Echo Cancellation (AEC)

• Expansion Capabilities: Supports up to 3 x Yealink EXP43 color screen expansion modules

• Power Source: Power over Ethernet (IEEE 802.3af Class 2) or optional 5V/1.2A DC power supply

• Desk Stand: Multi-angle stand with 2 adjustable positions; wall-mountable

Best For & Intent

• Best For: Office workers, administrative assistants, call center staff, and VirtualPBX users who require multiple SIP lines, dual USB expandability, and fast Gigabit network pass-through.

• Not Ideal For: Executive offices requiring a full-color LCD screen (consider the Yealink T46U or T54W) or full touchscreen navigation (consider the Yealink T48U or T57W).

Domestic shipping to the US only. Contact sales for non-US destinations.