The Fanvil X4 is a feature-rich 4-line enterprise phone designed for professional environments that demand high performance and flexibility. It features a main 2.8-inch color LCD display and two secondary 2.4-inch color LCDs, providing clear and easy access to multiple lines and programmable keys with vibrant multi-color LEDs.

Equipped with 12 programmable line keys, 6 soft keys, and 4 dedicated function keys, the X4 ensures efficient call management and quick access to essential functions. The phone supports HD audio quality with advanced codecs like G.711a/μ, G.729, G.722, G.723, and G.726, along with echo cancellation and noise reduction, delivering crystal-clear communication.

The full-duplex speakerphone allows for hands-free conversations, and the phone supports both RJ-9 and optional 3.5mm headset connections, providing flexibility for different audio needs. It features dual 10/100/1000 Mbps Ethernet ports and supports Power over Ethernet (PoE) for easy installation and reduced cable clutter. An optional external power adapter (5V DC, 2A) is also available.

The Fanvil X4 is compatible with SIP v2 (RFC 3261) and supports up to 4 SIP accounts, making it suitable for diverse communication requirements. It includes advanced call handling features such as call transfer, forwarding, hold, 3-way conference calling, call waiting, and caller ID. Security is reinforced with support for TLS, SRTP, HTTPS, and 802.1x network authentication.

Firmware updates can be performed remotely via TFTP, FTP, or HTTP, ensuring the phone remains up-to-date with the latest features and security patches. The X4 comes with a desktop stand and can be wall-mounted with an optional bracket, fitting seamlessly into any office setting. It is available in a sleek black finish, complementing modern office environments.