Fanvil X4U Enterprise IP Phone with 12 SIP Lines
Fanvil X4U Enterprise IP Phone is a robust, feature-rich SIP handset built for enterprise use, offering 12 SIP lines, 6-way conferencing, and dual 320×240 px color displays (2.8″ main + 2.4″ DSS) with up to 30 programmable DSS keys, plus 3 line keys with LEDs. It delivers HD audio via wideband codecs (G.722, Opus) with echo cancellation, voice activity detection, noise reduction, AGC, PLC, and adaptive jitter buffering, ensuring excellent call clarity.
Featuring dual Gigabit Ethernet with PC bypass, PoE support, IPv6, VLAN/QoS, VPN (L2TP/OpenVPN), and robust security (TLS/SRTP), it’s designed for secure, high-performance networking. The phone also supports EHS wireless headsets, USB Bluetooth/Wi-Fi dongles, and offers enterprise-grade provisioning and management (FTP/TFTP/HTTP/HTTPS/DHCP Option 66/SIP PnP/TR‑069, web GUI, syslog, packet dump), along with a flexible desktop/wall mount design and low power draw (~1–10 W). While praised for its affordability and features, some users note occasional firmware quirks, making it a strong value play—but consider long-term reliability needs.
Description
Fanvil X4U Enterprise IP Phone with 12 SIP Lines
Specifications
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General & Highlight Features
- 12 SIP lines, 6‑way audio conferencing, SIP hotspot
- Dual 320×240 color LCDs: 2.8″ main screen + 2.4″ DSS screen
- Supports up to 30 DSS keys via paging, plus 3 main line keys with LEDs
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Audio & Codecs
- HD audio (0–7 kHz) via handset and speaker
- Narrowband: G.711a/u, G.723.1, G.726-32K, G.729AB, AMR, iLBC
- Wideband: G.722, AMR-WB, Opus
- Full-duplex Acoustic Echo Cancellation, Voice Activity Detection, Comfort Noise Generation, Noise Reduction, Automatic Gain Control, Packet Loss Concealment, adaptive jitter buffer, DTMF RFC2833/SIP INFO
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Networking & Security
- Dual Gigabit Ethernet ports (PC bypass), supports 802.3af/at PoE
- IPv4/IPv6, VLAN, QoS, LLDP, CDP, DHCP/PPPoE, SNTP
- VPN: L2TP, OpenVPN; Network access control via 802.1x
- Supports STUN, RTP/RTCP/SRTP, RTCP-XR, VQ-RTCPXR
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Ports & Expandability
- RJ9 ports: handset and headset (supports EHS for Plantronics/Jabra)
- USB‑A port: for BT20 Bluetooth dongle, WF20 Wi‑Fi dongle, or USB flash storage
- Dual RJ45 LAN/PC ports and DC input 5 V / 2 A
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Call Features & Directory
- Local and LDAP/XML remote phonebooks (up to 1,000 entries each), call logs (1,000 entries)
- Call handling: hold/resume, waiting, forward (always/busy/no‑answer), transfer (attended/unattended), park/pick‑up, intercom, auto‑answer, hot‑line, hot‑desking, DND, speed‑dial, anonymous call
- Programmable DSS/soft keys, blacklist/whitelist, VMWI, screen saver, action URL, uaCSTA
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Provisioning & Management
- Auto‑provisioning via FTP/TFTP/HTTP/HTTPS/DHCP‑OPT66/SIP PNP/TR‑069
- Web GUI, packet dump, syslog, config import/export, phonebook export/import, firmware upgrade
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Physical & Power Specs
- Dimensions (desk, angle 45°): 214×188.6×181.1 mm; (desk, 50°): 214×180.5×190.1 mm; wall mount: 214×119.4×219.1 mm
- Weight/finish: black housing, wall-mountable with bracket
- Power consumption: idle ~0.87–1.27 W, peak ~4.72–6.8 W (adapter); PoE draws up to ~10.46 W
- Angle-adjustable desktop stand (45°/50°), wall-mounting option
- Temperature: 0–45 °C; humidity: 10–95% RH
Summary Table
| Category | Specification |
| SIP Lines | 12 |
| Displays | 2.8″ main screen + 2.4″ DSS screen (320×240 each) |
| DSS Keys | Up to 30 programmable |
| Audio | HD handset/speaker, wideband codecs (G.722, AMR-WB, Opus) |
| Networking | Dual Gigabit + PoE, IPv6, VPN, VLAN, QoS, dual-port |
| Expandability | USB dongles: Bluetooth/Wi-Fi; EHS headset support |
| Call Management | Standard features: forward, transfer, park, pickup, conferencing, etc. |
| Provisioning | Multiple provisioning methods incl. TR-069, SIP PNP |
| Power | 5 V DC or PoE, desktop or wall mounting |
| Physical | Angle-adjustable stand, compact desk and wall dimensions |
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