GRANDSTREAM – Telephone IP 4 Line SIP PoE

The Panasonic KX-TA82483 3x8 expansion card expands the basic system with an additional 3 CO lines and 8 extensions. This card can be installed in either expansion card slot.

Up to 20 simultaneous calls Up to 10 DECT cordless handsets or DECT headsets Up to 10 SIP accounts Noise Reduction System TLS and SRTP security encryption

Yealink T48U SIP Phone The SIP-T48U has a seven-inch, 800 x 480-pixel, backlit- color touch screen, which enables a rich visual presentation and easy navigation. Accompanied by two USB ports, the T48U 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 29 one-touch DSS keys that can be easily programmed to various features, but also can connect up to three expansion modules, for up to 180 additional buttons with a screen-based LCD display and LED system.. Key Features and Benefits: 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, Opus, is designed to perform a higher HD audio quality than other wideband codecs in a high network bandwidth; However, if your current network quality is poor, Opus can provide you with a better audio quality than other narrowband codecs. 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 ExpandabilityThe SIP-T48S has a seven-inch, 800 x 480-pixel, backlit- color touch screen, which enables a rich visual presentation and easy easy navigation. A built-in USB 2.0 port can also be used for Bluetooth, Wi-Fi and USB call recording. The phone supports up to six expansion modules, for up to 240 additional buttons with a screen-based LCD display and LED system. Plus, it has 29 one-touch DSS keys which can be programmed to various features. 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. • 7" 800 x 480-pixel color touch screen with backlight • Opus codec support • Dual USB ports • Dual firmware images • T4U Auto-P template unified • T4U firmware unified • Up to 16 SIP accounts • Dual-port Gigabit Ethernet • PoE support • Paperless label design • Headset, EHS support • Wi-Fi via WF40/WF50 • Bluetooth via BT40/BT41 • USB recording • Supports color-screen expansion modules • Stand with two adjustable angles • Wall mountable Note: Power supply is sold separately, phones come PoE equipped.