- Description
- Specifications
16-Line Gigabit SIP Phone with 7-Inch Color Touchscreen, Dual USB 2.0 Ports for Bluetooth and WiFi Adapters, PoE, and EXP43 Expansion Module Support
The Yealink SIP-T48U (1301204) is a 16-line Gigabit IP phone with a 7-inch color touchscreen at 800x480 resolution for intuitive visual call management, dual USB 2.0 ports for Bluetooth adapters, WiFi dongles, USB headsets, and call recording, and Yealink Optima HD Voice with Opus codec for superior audio clarity across varying network conditions. Dual-port Gigabit Ethernet with built-in PoE provides high-speed wired connectivity with PC passthrough and powers the phone directly from the network switch.
The SIP-T48U is the flagship of Yealink's T4U series, combining the large 7-inch color touchscreen with 16 SIP accounts, Gigabit Ethernet, and dual USB ports in a single executive desk phone. The touchscreen provides swift navigation between call screens, directories, and settings without physical button limitations, while 29 one-touch DSS keys handle speed dial, BLF, and custom functions directly on the display. The phone deploys through Yealink's Redirection and Provisioning Service for zero-touch provisioning with unified T4U firmware across the entire series.
Where the SIP-T48U Fits
- Executive offices and professional workspaces where the 7-inch color touchscreen provides intuitive visual call management for 16 SIP accounts, 29 one-touch DSS keys handle speed dial and BLF assignments directly on the display, and dual USB ports add Bluetooth headset pairing and WiFi connectivity through adapters
- High-volume reception and call center desks where up to three EXP43 expansion modules add up to 180 programmable keys with LCD display and LED indicators for BLF monitoring, speed dial, and line management across large call environments
- Managed Gigabit VoIP fleets where dual-port Gigabit Ethernet with PC passthrough provides full network speed at every desk, zero-touch provisioning through Yealink's RPS handles deployment without manual configuration, and unified T4U firmware simplifies maintenance across all T4U models in the organization
What the SIP-T48U Delivers
- 7-Inch Color Touchscreen: 800x480 resolution color touch display provides intuitive visual call management with swift navigation between call screens, directories, contacts, and settings. 29 one-touch DSS keys with paperless labels handle speed dial, BLF, and custom function assignments directly on the touchscreen.
- Dual USB 2.0 Ports: Two USB ports support any combination of two accessories simultaneously, including BT41 Bluetooth adapter for wireless headset pairing, WF40/WF50 WiFi dongle for wireless network connectivity, USB headset for hands-free operation, and USB flash drive for call recording.
- 16 SIP Accounts with Optima HD Voice: Registers up to sixteen independent SIP lines for multi-department call handling on a single phone. Yealink Optima HD Voice with Opus codec delivers wideband audio that adapts to network bandwidth for clear conversations on any connection quality.
- Gigabit Ethernet with PoE: Dual-port Gigabit Ethernet with PC passthrough and built-in PoE for single-cable installation from the network switch. SIP over TLS/SSL provides secure transport for enterprise environments.
- EXP43 Expansion Module Support: Connects up to three Yealink EXP43 expansion modules for up to 180 additional programmable keys with LCD display and LED indicators for BLF, speed dial, and custom function assignments at reception desks and high-volume call environments.
What Is the Difference Between the Yealink T48U and T48S?
The SIP-T48U replaces the T48S with dual USB 2.0 ports instead of a single USB port, adding the ability to use two accessories simultaneously, such as a Bluetooth adapter and WiFi dongle or a USB headset and flash drive for call recording. The T48U also adds Opus codec support for improved audio quality across varying network conditions, dual firmware images for failsafe upgrades, and unified T4U firmware that simplifies fleet management across all T4U models. Both phones share the same 7-inch color touchscreen, 16 SIP accounts, and Gigabit Ethernet with PoE.
