Yealink sip-t77u ip phone
highlights
display: 7-inch \(800\times 480\) pixel backlit color capacitive touchscreen.audio: hd voice,full-duplex speakerphone, ai-powered noise cancellation, and acoustic shield.capacity: 16 sip accounts, 84 one-touch dss keys.connectivity: dual-port gigabit ethernet, poe (ieee 802.3af class 3), dual usb ports (2.0) for bluetooth/wi-fi/headsets.operating system: linux 6.1 with trusted execution environment (tee).expansion: supports up to three exp55 color-screen expansion modules.security: tls 1.3, aes 256-bit encryption, wpa3.installation: dual-angle stand, wall-mountable.