The SIP-T43U IP phone is a feature-rich business tool for excellent communications and extended functionality. Integrated with Hall Switch, T43U gives you a quieter operation and environment. It is a 12-line IP phone that comes with a 3.7- inch large black-and-white screen and the EXP43 support. United Yealink Optima HD Voice technology, the T43U awards you the superb audio quality and crystal-clear voice communications. The phone feels quicker and more responsive when performing call features. Moreover, the T43U puts dual USB ports in a phone that makes Bluetooth, Wi-Fi, USB headset and USB recording come true, and you can use any two of them freely according to your needs. The Yealink new T4U series offers the same elegant appearance as the T4 line, but with improvements for greater interoperability and better collaboration. The T4U series better builds the Yealink ecosystem and is compatible with more Yealink headsets, supporting intelligent channel switching* and using the phone to configure and upgrade headset. Easy Customization and High Expansibility Accompanied by two USB ports, the T43U is your right-hand man in the office that makes Bluetooth, Wi-Fi, USB headset and USB recording possible, and you can use any two of them freely according to your needs to enrich phone features. Meanwhile, the phone not only has three pages of flexible buttons that can be easily programmed with 21 paperless DSS keys at most, but also can connect up to three expansion modules, for up to 180 additional buttons with a screen-based LCD display and LED system. HD Audio Yealink Optima HD Voice technology combines cutting-edge hardware and software with wideband technology for maximum acoustic performance. Being a totally open, highly versatile audio codec, is designed to perform a higher HD audio quality than other wideband codecs in a high network bandwidth. And its hearing aid compatible (HAC) handset helps the person who is with hearing loss to hear the voice more clearly. Efficient Installation and Provisioning Yealink T4U series supports efficient provisioning and effortless mass deployment with Yealink’s Redirection and Provisioning Service (RPS) and Boot mechanism to help you realize the Zero Touch Provisioning without any complex manual settings, which makes the T4U series simple to deploy, easy to maintain and upgrade. Furthermore, a unified firmware and auto-p template that applies to all T4U phone models, saves even more time and costs for businesses, as well as simplifies the management and maintenance. Secure Transport and Interoperability Yealink T4U series uses SIP over Transport Layer Security (TLS/SSL), which is the latest network security technology. It’s also compatible with leading soft switch suppliers, such as 3CX, Broadsoft Broadworks. It is carried with dual firmware images that gives you a enterprise-level protection to avoid bricking your system once upgrade failed. What's more, T4U series support the feature of Security Center, which allows users to decide whether to connect the phone to the device management platform/service and what private data you permit to report. Features 3.7" 360x160-pixel graphical LCD with backlight Dual USB ports T4U Auto-P template unified T4U firmware unified Up to 12 SIP accounts PoE support USB headset and EHS support Wi-Fi via WF40/WF50 Bluetooth via BT40/BT41/BT52 Supports color-screen expansion modules Stand with 2 adjustable angles Wall mountable Handset with hall switch

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