With faster response on the phone's user interface and better device performance, the SIP-T27G IP phone is Yealink's feature-rich tool, unifying superior voice capabilities and increased function extension capability for business. Yealink Optima HD technology and wideband codec of Opus deliver a superb sound quality and bring you a life-like voice communications. With a USB port, the SIP-T27G boasts unparalleled functionality and expansibility, which comes ready for future Bluetooth, Wi-Fi and USB recording features. Seamlessly migrated to network infrastructure, SIP-T27G IP phone is also built with the Gigabit Ethernet, facilitating very rapidly call handling. By using standard encryption protocols, the SIP-T27G performs highly secure remote provisioning and upgrades.