IP Phone Fanvil X4U Black 12 lines LCD Wi-Fi

The Fanvil X4U is a black IP phone with two color LCDs (2.8" main display and 2.4" side display) offering 12 configurable lines, Gigabit Ethernet and support for IPv4/IPv6. It delivers HD audio through a Harman speaker and wideband codecs (G.722 and Opus) and supports wireless accessories such as Wi‑Fi and Bluetooth dongles and EHS headsets for flexible office use.

Advantages

The device provides high-definition audio via a Harman speaker and wideband codecs, improving voice clarity for individual and group calls. Dual color displays and three LED-illuminated line keys enable clear visual access to instructions and feature status. Gigabit Ethernet, PoE support and compatibility with Wi‑Fi/Bluetooth dongles and EHS headset cables increase deployment flexibility and interoperability in modern office environments.

Suitable for

• Reception and front-desk staff handling multiple lines
• Open-plan offices requiring clear group communication
• Managers and knowledge workers needing headset and wireless accessory support
• Environments using IPv6 and Gigabit Ethernet networks

Key specifications

• Lines: 12 lines
• Displays: 2.8" main LCD (320 x 240) + 2.4" color side LCD
• Audio: Harman speaker; wideband codecs G.722 and Opus; speakerphone
• Connectivity: Gigabit Ethernet, PoE, Bluetooth support, Wi‑Fi via dongle
• Protocols: IPv4 and IPv6
• Handset: Wired handset
• Color: Black

How to use

Connect the Fanvil X4U to your network via Gigabit Ethernet or PoE, or attach a Wi‑Fi dongle if wireless connectivity is required. Configure SIP accounts for up to 12 lines through the web interface or provisioning server. Adjust audio settings to use the Harman speaker or connect a headset via the EHS cable or Bluetooth dongle. Use the main and side LCDs and the LED line keys to navigate calls and instructions.

Recommendations

For best voice quality enable wideband codecs (G.722 or Opus) in your VoIP server settings and use PoE for simplified deployment; attach the Wi‑Fi or Bluetooth dongle only when wired network access is unavailable or mobility is required.