Especially designed for high-end office users, Yealink SIP-T54S is an ease-of-use Media IP Phone with a distinctive appearance and structure. For its simplified and human-friendly design as well as user interface, it brings the IP phone and users more closer and unceasingly boosts the operating experience. With respect to Yealink Optima HD voice technology, T54S enhances its audio quality via adding Opus audio codec, so that it delivers superb audio quality and crystal clear voice communications. Meanwhile, Yealink SIP-T54S is built with Gigabit Ethernet technology, a built-in Bluetooth and a built-in USB 2.0 port, intending to enhance collaboration and productivity.Yealink SIP-T54S is designed to satisfy the users who need for a higher quality IP phone with the improvement of hardware, audio quality, user experience, collaboration efficiency, etc.• New structure design• 4.3" 480 x 272-pixel color display with backlight• Built-in Bluetooth 2.0• USB 2.0 port for USB recording and wired/wireless USB headsets• Opus Codec support• T54S&T52S firmware and unified Auto-P template• Up to 16 VoIP accounts• Dual-port Gigabit Ethernet• PoE support• Paperless label design• Wi-Fi via WF40• Color-screen Expansion Module support• Stand with 2 adjustable angles