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Yealink SIP-T48S

Remarkable Quality and Design

The Yealink T4 series represents the cutting edge of VoIP technology and is intended for discerning users with extremely high expectations for IP phones. Revolutionary in appearance and technical design, the T4 series is pleasurable and practical to use. Advanced features include support for gigabit networks, rich programmable DSS keys that tailor the IP phone features to specific needs, and support for Bluetooth headsets that give users more freedom at work. Enhanced sound quality is delivered by the Optima HD Voice system, which meets TIA 920 certification standards. Yealink's T4 series is the ideal marriage of perfection and performance.

Large Interactive Digital Display (Paperless)

The user-oriented design concept of the T4 series delivers a friendly interface and easy operation. The series offers large high-definition screens for a pleasant visual experience, from the flagship model SIP-T48S's 7-inch TFT LCD display with touch screen to the grey-scale backlit graphical LCD of the SIP-T41P. An abundance of multifunction DSS keys that incorporate red and green lights allow for customized programming to increase productivity.

Enrich Collaboration, Improve Productivity

Yealink’s T4S series is the upgraded IP phone line of Yealink’s former T4 series. Designed for today’s busy executives and managers, the T4S series features an elegant appearance, Optima high-definition audio quality and remarkable phone experience. Integrating cutting-edge features like Wi-Fi and Bluetooth connectivity, the T4S series enriches business users’ daily collaboration. It also protects business users’ investment with its effortless deployment and broad interoperability with UC platforms and IP PBX systems.

Optima HD Audio

With Yealink’s Optima HD audio technologies, industry-leading acoustic clarity and newly-added support for Opus* to its broad audio codec list, the Yealink T4S guarantees a lifelike collaboration experience. * By supporting Opus, Yealink T4S series delivers better audio quality in both high-bandwidth and poor network conditions, comparing to other wideband or narrowband codecs.

Remarkable User Experience

The Yealink T4S series delivers excellent stability and performance with its latest advanced components. The phones feature an optimized interface for smartphone-like user experience. Its rich one-touch soft keys allow for customization, bringing additional convenience and increasing productivity.

Additional Convenience and Flexibility

In addition to the T46S and the T48S, the new T41S and T42S are equipped with a built-in USB port, meaning the entire T4S series supports extended functions such as USB call recording, Bluetooth and Wi-Fi connectivity for more flexibility and functionalities.

Effortless Configuration and Upgrade

The Yealink T4S supports efficient provision and effortless mass deployment with Yealink’s free Redirection and Provisioning Service (RPS). Furthermore, the T4S features a unified firmware and an auto-p template that apply to all phone models (T41S, T42S, T46S and T48S), saving even more time and IT costs for businesses.

Bluetooth and USB Support

The SIP-T48S and the SIP-T46S provide a built-in USB port and support for Bluetooth headsets. A hands-free connection gives you more freedom and comfort at work.

LCD 7" colour touch screen
Resolution 800 x 480 
LCD Backlight
Line 16
Wall Mounting
Foot Stand 2 adjustable angles
USB Port (2.0 compliant) 1
Ethernet Port Dual-port Gigabit Ethernet
Handset Port (RJ-9)
Headset Port (RJ-9)
External Yealink AC Adapter (optional)  AC 100~240V input and DC 5V/2A output
Line Key 0
Memory Key 29 touch keys
Yealink EXP50 Expansion Module 
(Accessory, purchased separately)
Yealink EXP40 Expansion Module 
(Accessory, purchased separately)
Yealink EXP20 Expansion Module 
(Accessory, purchased separately)
Yealink EHS36 Wireless Headset Adapter
(Accessory, purchased separately)
Yealink YHS32 Headset
(Accessory, purchased separately)
Yealink Bluetooth Adapter BT40
(Accessory, purchased separately)
Yealink Wi-Fi Adapter WF40
(Accessory, purchased separately)
USB Recording
3-way Conferencing
HD Voice HD Speaker
HD Handset
Wide-band Codecs G.722,Opus
Narrow-band Codecs G.711(A/µ), G.729A/B, G.726,
G.723.1, iLBC, Opus
LCD Type Fixed
Operating System Linux
Built-in Bluetooth X
Built-in Wi-Fi X
USB Headset
(Accessory, purchased separately)
Camera X
Video Resolution X
Video Codecs X
3-way Video Conferencing X
5-way video/audio mixed conferencing X

Concept and Design by Blue Lynx

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