Product Description
| Feature | Specification |
|---|---|
| Display | 7″ Color Touch Screen (800 x 480 pixels) with backlight |
| Audio | HD Voice (Full-duplex speakerphone, Handset, and Headset) |
| Codecs Supported | G.711, G.722, G.729, G.726, iLBC, AMR, Opus |
| Network Ports | 2 x 10/100/1000 Gigabit Ethernet ports (RJ45) |
| Power Supply | 5V/2A via Adapter (included) or Power over Ethernet (PoE) |
| Power Consumption | < 5W (typically) |
| PoE Support | Yes (IEEE 802.3af/at) |
| Ethernet Port Features | Dual Gigabit Ethernet ports for connecting additional devices |
| USB Ports | 2 x USB 2.0 ports (1 x USB for Bluetooth/Wi-Fi dongles, 1 x USB for USB devices) |
| Headset Support | Yealink EHS36 (via headset port), Supports wireless headsets |
| Audio Features | Echo Cancellation, Noise Reduction, Auto Gain Control |
| Call Features | Call Hold, Mute, Call Transfer, Call Forwarding, Conference Calling |
| Bluetooth Support | Yes, with USB Bluetooth Dongle (sold separately) |
| Wi-Fi Support | Yes, with USB Wi-Fi Dongle (sold separately) |
| Operating System | Yealink OS (based on Linux) |
| Security Features | TLS, SRTP, HTTPS, SSH, OpenVPN |
| Wall Mountable | Yes (VESA Mount 100mm x 100mm, optional accessory required) |
| Dimensions (WxDxH) | 260 x 220 x 195 mm (with stand) |
| Weight | 1.13 kg (including handset) |
| Color | Black |
| Language Support | English, Chinese, Spanish, and more than 20 other languages |
| Included Accessories | Handset, Handset Cord, Ethernet Cable, Power Adapter, Stand |
| Package Contents | Yealink SIP-T48U IP Phone, Quick Start Guide, Power Adapter, Stand |
| HD Voice | Yes, optimized for both handset and speakerphone |
| Ringtone Customization | 15 ringtones + downloadable options |
| Display Backlight | Yes, adjustable backlight brightness |
| USB 2.0 Support | Yes, supports USB devices (Bluetooth adapter, Wi-Fi dongle) |
| Firmware Upgrade | Remote and local upgrade support via TFTP, FTP, HTTP, HTTPS |
| Multilingual User Interface | Yes (supports 23 languages) |
| Call Waiting | Yes |
| Call History | Yes (up to 1000 entries) |
| Temperature Range | Operating: 0°C to 40°C (32°F to 104°F) |
| Storage | Built-in Flash memory 512MB |
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