Yealink SIP-T48S - VoIP phone - 3-way call capability - SIP, SIP v2 - 16 lines

Efficient installation and provisioning. The Yealink T4S supports efficient provisioning and effortless mass deployment with Yealinks redirection and provisioning service (RPS) and boot mechanism to help you realize the zero touch provisioning without any complex manual settings, which makes the T4S simple to deploy, easy to maintain and upgrade. Furthermore, a unified firmware and template saves even more time and costs for businesses, as well as simplifies the management and maintenance. HD audio. Yealink Optima HD voice technology combines advanced hardware with wide-band technology for maximum acoustic performance. Being a totally open, highly versatile audio codec, Opus, is designed to perform a higher HD audio quality in a high network bandwidth. However, if your current network quality is poor, Opus can provide you with a better audio quality. And its hearing aid compatible (HAC) handset helps the person who is with hearing loss to hear the voice more clearly. Easy customization and high expandability. The SIP-T48S has a 7in, 800 x 480-pixel, backlit color touchscreen, which enables a rich visual presentation and easy navigation. A built-in USB 2.0 port can also be used for Bluetooth, Wi-Fi and USB call recording. The phone supports expansion modules, for additional buttons with a screen-based LCD display and LED system. Plus, it has one-touch DSS keys, which can be programmed to various features.