Yealink T48U SIP-T4U Series IP Phone

The Yealink T48U is a premium desktop SIP IP phone designed for executives and professionals seeking superior communication capabilities. Featuring a large 7-inch (800 x 480 pixels) color capacitive touch screen with backlight, it offers an intuitive and user-friendly interface, making navigation between pages and applications seamless and efficient.

Powered by Yealink's Optima HD Voice technology enhanced with Acoustic Shield and Smart Noise Filtering, the T48U delivers crystal-clear sound quality for enriched voice conversations. It supports the Opus codec for outstanding wideband audio.

This advanced SIP phone allows up to 16 SIP accounts and comes equipped with dual Gigabit Ethernet ports supporting PoE (Power over Ethernet) to ensure high-speed connectivity and flexible power options.

A standout feature includes dual USB ports which support Bluetooth (via BT40/BT41 dongles), Wi-Fi (via WF40/WF50 dongles), and USB recording capabilities, giving users the freedom to customize their communication setup according to their needs.

Additional features support desktop expansion with the colour expansion module (EXP43), Electronic Hook Switch (EHS) headset compatibility, and options for wall mounting and adjustable stand angles for ergonomic comfort.

The T4U series firmware unification and auto-provisioning (RPS/boot mechanisms) simplify device management and interoperability.

Key Features:

• Large 7" 800 × 480-pixel color capacitive touch screen with backlight for easy navigation


• Optima HD Voice with Acoustic Shield and Smart Noise Filtering for crystal-clear communication


• Supports Opus codec for superior audio quality


• Up to 16 SIP accounts for multiple lines


• Dual-port Gigabit Ethernet with Power over Ethernet (PoE) support


• Dual USB ports for Bluetooth, Wi-Fi dongles, and USB recording


• Support for colour expansion module (EXP43) and Electronic Hook Switch (EHS) headsets


• Adjustable stand with two angles and optional wall mounting


• Unified T4U series firmware with simplified auto-provisioning