Yealink SIP-T48S Ultra-elegant Gigabit Color IP phone delivers a dynamic business communications solution to executives and professionals. With a large 7-inch color touch screen, makes switching between pages and applications swift, easy and convenient. 
Also packed with Yealink’s Optima HD Voice technology and Opus wideband codec, offers unparalleled audio clarity. SIP-T48S supports 2 Gigabit Ethernet ports for rapid call handling, Power over Ethernet (PoE) plus a USB 2.0 port to work in conjunction with Yealink's BT40 Bluetooth USB Dongle and WF40 Wi-Fi USB Dongle. Furthermore, supports up to 6 Expansion Modules and uses standard encryption protocols, performing highly secure remote provisioning and software upgrades.
The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration.

Key Features & Benefits:

• 7" (800x480 pixel) backlit color touch-screen display 
• Up to 16 SIP accounts
• 2 Gigabit Ethernet ports
• PoE (IEEE 802.3af) class 3 support 
• USB 2.0 port supporting:
• Bluetooth earphone through the Yealink Bluetooth USB Dongle BT40
• Wi-Fi through the Yealink WF40 WIFI USB Dongle
• USB call recording through USB flash drive
• Yealink Optima HD voice
• Opus codec support
• T4S Auto-P template unified
• T4S firmware unified
• Paper label free design
• 29 one-touch DSS keys
• 7 feature keys for message, headset, hold, mute, transfer, redial & hands-free speakerphone 
• 6 navigation keys, volume control keys, illuminated mute, headset & hands-free speakerphone keys
• 3-way conference call
• Supports up to 6 Expansion Modules for an attendant console application
• Local phonebook up to 1000 entries
• XML/LDAP remote phonebook
• Headset & EHS support
• Hearing aid compatible (HAC) handset support
• Stand with 2 adjustable angles
• Wall mountable
• DC 5V/2A PSU optionally available (Not included)
• 1 Year Warranty

 PartnerNET Yealink SIP T48S Datasheet

PartnerNET Yealink SfB Phone Flyer

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, 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 Expansibility:
The 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. 

Efficient Installation and Provisioning:
The Yealink T4S 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 T4S series simple to deploy, easy to maintain and upgrade. Furthermore, a unified firmware and auto-p template that applies to all T4S phone models (T41S, T42S, T46S and T48S), saves even more time and costs for businesses, as well as simplifies the management and maintenance.

Secure Transport and Interoperability: 
The SIP-T48S uses SIP over Transport Layer Security (TLS/SSL), which is the latest network security technology. It’s also compatible with leading soft switch suppliers 3CX and Broadsoft Broadworks.