The Yealink SIP-T48S does not come with a power supply, it is PoE out of the box. If you need a Power Supply please purchase the Yealink 5V 2A Power Supply.

The Yealink SIP-T48S packages 16 VoIP accounts, 29 single touch DSS keys, Optima HD, a PoE Gigabit Ethernet port, a Gigabit Ethernet expansion port, and Bluetooth headset support with the BT40, behind an intuitive 7 inch touch screen.



The SIP-T48S IP Phone is a dynamic business communications solution for executives and professionals. This phone offers a large touch screen that makes switching between pages and applications swift, easy, and convenient. The SIP-T48S is also equipped with Yealink’s Optima HD Voice technology and wideband codec of Opus for unparalleled audio clarity. Phone users will think they are sitting in the same room with one another. The phone uses Gigabit Ethernet technology for rapid call handling. 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.


Revolutionarily new design
Yealink Optima HD voice: a combination of wideband technology (G.722) and best-in-class system design
7″ 800 x 480-pixel color touch screen with backlight
Dual-port Gigabit Ethernet , integrated Power over Ethernet (PoE) support
Up to 16 SIP accounts
Supports Bluetooth headset through USB dongle
29 one-touch DSS keys
Wired/Wireless headset
Supports expansion modules
Stand with 2 adjustable angles
Wall mountable
Simple, flexible and secure provisioning options

Revolutionarily New Design

As Yealink ‘s SIP Phones continue to evolve, the SIP-T48S has been designed by pursuing ease of use with a scratch-resistant 7 inch touch screen, the T4 Series’ signature metallic texture, non-slip rubber feet, and ergonomic recessed buttons.

HD Audio

Yealink Optima HD Voice refers to the combination of software and hardware design as well as the implementation of wideband technology to maximize acoustic performance. Coupled with advanced acoustic clarity technology such as full duplex, echo cancellation, and an adaptive jitter buffer, the SIP-T48S creates an amazing face-to-face experience.

A Rich Visual Experience for Applications

The SIP-T48S supports vast productivity-enhancing features such as a XML Browser, call forwarding, call transfer, 3-way conferencing, and support for a vast number of UC platforms for a superior UC experience. The 7″ 800 x 480-pixel color touch screen with backlight enables rich visual presentation and easier menu navigation.

Advanced Connectivity & Expandability

For network connectivity, the SIP-T48S comes with two Gigabit Ethernet ports, one of them suitable for Power over Ethernet. The SIPT48S also includes a built-in USB port, which supports Bluetooth headsets with the Yealink BT40.

Highly Secure Transport & Interoperability

The SIP-T48S uses SIP over Transport Layer Security (TLS/SSL) to provide service providers with the latest technology for enhanced network security. The range is certified compatible with 3CX, Asterisk, and BroadSoft.

Additional information

Weight 9 kg
Dimensions 660 × 338 × 273 mm