IP Phone Fanvil X4U Black 12 lines LCD Wi-Fi Wired handset

The Fanvil X4U is an IP phone with two color displays (main 2.8" 320x240 and side 2.4") and support for up to 12 lines. Designed for office environments, the model offers Gigabit Ethernet, Wi‑Fi and wired handset options and supports wideband codecs G.722 and Opus for high-definition audio. The phone includes a Harman speaker, three programmable line keys with LED indicators and compatibility with accessories such as EHS headsets, Wi‑Fi and Bluetooth dongles.

Advantages

Fanvil X4U delivers clear HD audio through a Harman speaker and support for G.722 and Opus codecs, improving group and individual communication quality. Dual color displays allow quick access to instructions and call information while three LED line keys provide straightforward feature control. Compatibility with EHS headsets, Wi‑Fi and Bluetooth dongles increases deployment flexibility in varied office setups.

Suitable for

• Office desk telephony with multi-line management
• Teams requiring clear conference and group calls
• Workplaces needing wireless headset integration (EHS)
• Environments where Gigabit Ethernet and optional Wi‑Fi are needed

Key specifications

• Display: 2.8" color LCD (320 x 240) + 2.4" side color LCD
• Lines: Up to 12 lines
• Audio codecs: G.722, Opus (wideband)
• Speakerphone: Harman speaker (HD audio)
• Network: Gigabit Ethernet; supports IPv4/IPv6
• Accessories: EHS headset support, Wi‑Fi and Bluetooth dongle compatibility
• Color: Black

How to use

Connect the Fanvil X4U to your network via Gigabit Ethernet or attach the approved Wi‑Fi dongle for wireless connectivity. Configure SIP accounts and line assignments through the web interface or phone menu. Use the main 2.8" display for call control and the side 2.4" display for quick status information; program the three LED line keys for frequently used lines or features. Pair an EHS headset or Bluetooth dongle as needed following the accessory instructions.

Recommendations

For optimal audio quality, use the Fanvil X4U on a network with sufficient bandwidth and enable wideband codecs (G.722 or Opus). When deploying wireless accessories, verify compatibility with the X4U V2 revision and use manufacturer-recommended dongles and EHS cables.