The Yealink SIP-T48U is a revolutionary SIP phone designed for executives and busy professionals who demand a dynamic business communication solution. Featuring a stunning 7-inch 800 x 480-pixel color touch screen with backlight, the T48U delivers swift, intuitive navigation between pages and applications, combined with Yealink Optima HD Voice technology for superb audio quality and crystal-clear voice communications.
Built with dual USB 2.0 ports, the T48U unlocks expanded connectivity options including Bluetooth, Wi-Fi, USB headset support, and USB call recording, allowing users to pair any two functions simultaneously based on their workflow needs. The phone includes 29 one-touch DSS keys and supports up to three expansion modules for up to 180 additional programmable buttons, making it ideal for high-volume call handling environments.
As part of the Yealink T4U series, the SIP-T48U offers unified firmware and auto-provisioning templates across all T4U models, simplifying mass deployment and maintenance. With enterprise-grade security through TLS 1.3, dual firmware images for failsafe upgrades, and broad interoperability with leading platforms like Broadsoft, 3CX, Genesys, Metaswitch, and Asterisk, the T48U delivers a future-ready communication experience.
- 7" 800 x 480-pixel color touch screen with backlight
- Supports up to 16 SIP accounts
- Yealink Optima HD Voice with Acoustic Shield and Smart Noise Filtering
- Dual USB 2.0 ports for Bluetooth, Wi-Fi, headset, or recording
- 29 one-touch programmable DSS keys
- Dual-port Gigabit Ethernet with PoE (IEEE 802.3af) support
- 10-way conferencing and full-duplex speakerphone
- Dual firmware images for failsafe upgrades
- Supports up to 3 EXP43 expansion modules for 180 additional keys
- Wall mountable with adjustable stand angles
- Display: 7" 800 x 480-pixel color touch screen, 24-bit depth
- SIP Accounts: Up to 16
- Programmable Keys: 29 one-touch DSS keys
- Network Ports: Dual-port Gigabit Ethernet
- USB: 2 x USB 2.0 ports
- Handset/Headset: 1 x RJ9 handset port, 1 x RJ9 headset port
- Audio: Optima HD Voice, HAC handset, Acoustic Shield
- Codecs: AMR-WB/NB, G.722, G.711 (µ/A), G.723.1, G.729, G.726, iLBC
- Conferencing: 10-way
- Power: PoE (IEEE 802.3af, Class 3) or optional 5V/2A adapter
- Power Consumption: 1.8–3.8 W (PSU) / 2.3–4.7 W (PoE)
- Security: TLS 1.3, SRTP, AES-256, OpenVPN, IEEE 802.1X, Secure Boot
- Wireless: Wi-Fi via WF40/WF50, Bluetooth via BT40/BT41/BT51
- Dimensions: 266 × 226 × 85 × 54 mm
- Operating Temperature: -10 to +45°C (+14 to 113°F)
- Color: Classic Grey
Compatible Accessories
| ✓ | 7" 800 x 480 Color Touch Screen |
| ✓ | 29 one-touch DSS keys |
| ✓ | Supports up to 16 SIP Accounts |
| ✓ | Dual-Port Gigabit Ethernet with PoE |
| ✓ | HD Voice for Crystal Clear Audio |
