Product Overview
The Yealink T48U is the flagship device of the T4U series, designed to deliver premium performance, advanced functionality, and a superior user experience. With its 7” color touchscreen, the T48U offers an elegant interface that enhances productivity, making it an ideal choice for executives, busy professionals, and receptionists handling high call volumes.

Equipped with dual USB ports, the T48U supports a wide range of accessories such as USB flash drives for call recording, the WF50 USB Wi-Fi dongle for cable-free connectivity, and Bluetooth adapters for headset pairing. The phone also supports dual firmware images, ensuring enhanced reliability and protection during firmware upgrades.

For reception or switchboard use, the T48U integrates seamlessly with up to three EXP43 expansion modules, enabling up to 180 additional BLF keys and advanced call handling features. Combined with HD voice quality, Opus codec support, and PoE capability, the T48U sets the standard for enterprise IP telephony.

Key Features

• 7” color touchscreen (800 × 480 pixels, backlit)

• 2 × Gigabit Ethernet ports (10/100/1000) with PoE support

• 16 SIP accounts

• 29 memory keys for quick access and functions

• Dual USB ports for accessories and connectivity

• Supports EXP43 expansion modules (up to 3 units)

• Dual firmware images for system reliability

• Wall-mountable design

• Audio codecs: Opus, HD Voice support

Benefits

• High-performance reception phone – Expandable with up to three EXP43 modules for 180 BLF keys

• User-friendly touchscreen interface – Large, intuitive 7” display for call management and navigation

• Flexible connectivity – USB ports for Wi-Fi, Bluetooth, flash drives, and handsfree accessories

• Enterprise-grade audio – HD Voice and Opus codec ensure crystal-clear conversations

• Enhanced reliability – Dual firmware images protect against upgrade failures

• Unified T4U firmware – Streamlined updates and simplified management across the T4U series