Yealink Optima HD Voice technology integrates state-of-the-art hardware, software, and wideband technology to deliver superior acoustic performance.

The Yealink T4U series simplifies device management with effortless mass deployment and Zero Touch Provisioning, utilizing Yealink’s Redirection and Provisioning Service (RPS) and Boot mechanism, making administration more efficient and labor-saving.

Color-Screen Expansion Module EXP43 Designed for enhanced call management, the 4.3-inch color screen expansion module offers a streamlined interface and up to 60 programmable keys for a variety of functions.