Last updated: 2026-04-18 For research and educational purposes only.
Before discussing firmware, let’s establish the hardware. The ZXHN F670L is a 4-port Gigabit Ethernet ONT (Optical Network Terminal) with integrated Wi-Fi (typically 802.11n/b/g/ac). It is designed specifically for networks, which operate at symmetrical speeds (1.25 Gbps up/down) commonly used by regional carriers and major providers like China Telecom, China Unicom, and various Southeast Asian ISPs.
Supports high-speed internet, VoIP (POTS port), and IPTV.