Yealink SIP-T48S Gigabit IP VoIP SIP Phone - Skype for Business

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10.00 (in)
9.00 (in)
7.00 (in)
Calculated at Checkout


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 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. Skype for Business

SIP-T48S Features

  • 7" 800 x 480-pixel color touch screen with backlight
  • Opus* codec support • USB 2.0
  • T4S Auto-P template unified
  • T4S 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 expansion modules
  • Stand with two adjustable angles
  • Wall mountable

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 Expandability

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.


  • Yealink
  • Yealink
  • Yealink
  • SIP-T48S
  • 1


  • VoIP phone
  • Base
  • 3-way


  • Yes
  • Call Waiting, Call Hold, Voice Mail, Call Transfer, Caller ID, Call Forwarding
  • Mute indicator, Speakerphone indicator, Visual ringer light, Voice message waiting indicator, Headset
  • Yes
  • Intercom, Call recording

Telephone Memory

  • 1000


  • LCD display
  • 800 x 480 pixels
  • 24-bit (16.7 million colors)
  • 7 inch
  • 17.8 centimetre
  • Color
  • Yes
  • Base
  • Touch screen

IP Telephony

  • Integrated Ethernet switch, Multiple VoIP protocol support
  • Yes
  • SIP v2, SIP
  • iLBC, G.711a, G.722, G.723.1, Opus, G.711u, G.729ab
  • 16 lines
  • IEEE 802.1Q (VLAN), Type of Service (ToS), IEEE 802.1p
  • PPPoE, Static, DHCP
  • TLS, EAP-MD5, IEEE 802.1X
  • 2 x Ethernet 10Base-T/100Base-TX/1000Base-T
  • Yes
  • Packet loss concealment (PLC), Comfort noise generation (CNG), Adaptive jitter buffer (AJB), HD Voice, Voice activity detection (VAD), Acoustic echo cancellation (AEC), Automatic gain control (AGC)
  • Network Address Translation (NAT), Lightweight Directory Access Protocol (LDAP), Class 3 PoE

Phone Connections

  • Electronic hook switch (EHS), USB, 2 x headset jack / RJ-9

CE Cables (Details)

  • Network cable


  • Black, Black
  • Table-top, Wall-mountable

Dimensions & Weight (Base)

  • 10.5 inch
  • 8.9 inch
  • 7.3 inch

Product Datasheet SIP-T48S

Extra Information

10.00 (in)
9.00 (in)
7.00 (in)
3.00 LBS