F670 Manual — Zte

| Indicator | Status | Meaning | | :--- | :--- | :--- | | | Solid Green | The device is powered on and functioning normally. | | | Off | The device is not receiving power. Check the power cable and the ON/OFF switch. | | PON | Solid Green | The device is registered and connected to the ISP's fiber optic network. | | | Flashing Green | The device is trying to register with the ISP. This should only be a temporary state. | | LOS | Off | Normal operation; the optical signal is being received. | | | Flashing Red | The fiber optic cable is disconnected or the signal is lost. Check the fiber cable connection immediately. | | Internet | Solid Green | The device has an established internet connection with the ISP. | | | Flashing Green | Data is being transmitted or received over the internet. | | | Off | No internet connection. Check the WAN or PPPoE settings. | | LAN1~LAN4 | Solid Green | A device is connected to the corresponding LAN port via an Ethernet cable. | | | Flashing Green | Data is being transmitted or received through that LAN port. | | Phone1/Phone2 | Solid Green | A telephone is connected and the VoIP service is ready. | | | Flashing Green | The phone line is in use. | | 2.4GHz / 5G | Solid Green | The 2.4GHz or 5GHz wireless network is enabled and active. | | WPS | Flashing Green | The WPS function is active, waiting for a client to connect. | | USB | Solid Green | A USB device is connected and recognized by the router. |

You can also set up a which forwards all ports to a single internal device. This is useful for troubleshooting but should be used with caution, as it exposes the device directly to the internet without router-level firewall protection. zte f670 manual