The Yealink SIP-T43U is a powerful 12-line business IP phone built for fast communication. It features a 3.7-inch backlit LCD screen and dual Gigabit Ethernet ports for rapid data transit. Utilizing Optima HD Voice, the Opus codec, and Acoustic Shield technology, it ensures crystal-clear audio by filtering out ambient office noise. Dual USB ports provide flexible connectivity for Wi-Fi or Bluetooth dongles, USB headsets, and up to three EXP43 expansion modules. Deploying the T4U series is effortless thanks to unified firmware and Yealink’s Redirection and Provisioning Service (RPS). Powered by PoE, this phone streamlines hardware needs and maximizes productivity in busy workspaces. Out of the box, access network management quickly using the standard factory default admin credentials.