Yealink SIP-T43U SIP Phone

Yealink SIP-T43U is a mid-range IP phone designed for use in business environments. It supports multiple lines and offers a balance of usability and efficiency.

Features:

1. Display:
   • 3.7″ 360×160-pixel graphical LCD with backlight
   • Adjustable contrast and backlight for improved visibility
2. Audio:
   • Supports HD Voice and Yealink’s Optima HD Voice technology
   • Supports wideband codecs like Opus for superior sound quality
   • Full-duplex speakerphone with Acoustic Shield and Noise Filtering
3. Lines and Accounts:
   • Supports up to 12 SIP accounts
   • Includes 3-way audio conferencing
   • Flexible call handling with features like call hold, forward, transfer, and park
4. Ports and Connectivity:
   • Dual Gigabit Ethernet ports (10/100/1000 Mbps) with Power over Ethernet (PoE) support
   • USB 2.0 port for Bluetooth/Wi-Fi dongle, call recording, or USB headset
5. Expansion:
   • Supports up to three expansion modules (Yealink EXP43) for additional line appearances and speed dials
6. Security:
   • Advanced security protocols like TLS, SRTP, and HTTPS for secure communications
   • Auto-provisioning and centralized management via TR-069 and Yealink’s Redirection and Provisioning Service (RPS)
7. Customization:
   • Programmable keys for quick access to features
   • Supports busy lamp field (BLF) functionality, speed dial, and more
8. Power:
   • Power over Ethernet (PoE) support (Power supply unit is usually sold separately)
9. User Interface:
   • Intuitive navigation and interface with multiple soft keys, LED indicators for line status, and a customizable interface