The SIP-T48S is also with Yealinks Optima HD Voice technology and wideband codec of Opus for unparalleled audio clarity. Plus, it works in conjunction with Bluetooth USB Dongle and Wi-Fi USB Dongle. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration. The item "2 Yealink SIP-T48S Gigabit VoiP Phone 7-Inch Touch 16 Lines" is in sale since Saturday, April 29, 2017. This item is in the category "Computers/Tablets & Networking\Enterprise Networking, Servers\VoIP Business Phones/IP PBX".The seller is "chancetelecom" and is located in Miami, Florida. This item can be shipped to United States.