Introduction
The ZTE Zxa10 F670L is a GPON Optical Network Unit (ONU) designed for Fiber-to-the-Home (FTTH) and Fiber-to-the-Office (FTTO) broadband access networks. This terminal is a leading solution in its field, offering high-bandwidth capabilities, exceptional reliability, and low power consumption. It is engineered to meet diverse user requirements for accessing broadband internet, voice services, data transfer, and video streaming.
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your Zxa10 F670L device, ensuring optimal performance and connectivity.
1. Setup Instructions
1.1 Package Contents
Before you begin, please verify that your package contains the following items:
- ZTE Zxa10 F670L GPON ONU Terminal
- Power Adapter (EU, US, UK, AU compatible)
- Ethernet Cable

1.2 Physical Connections
Refer to the rear panel diagram for port identification:

- Connect Fiber Optic Cable: Insert the SC/UPC fiber optic cable from your service provider into the WAN port (SC/UPC) on the rear panel. Ensure a secure connection.
- Connect Ethernet Devices: Use Ethernet cables to connect your computers, routers, or other network devices to the LAN1, LAN2, LAN3, or LAN4 (RJ-45 Gigabit Ethernet) ports.
- Connect Telephone: If using voice services, connect your telephone to the Phone port.
- Connect USB Devices: The USB port can be used for compatible devices (e.g., storage, printer sharing) as supported by the device's firmware.
- Connect Power: Plug the power adapter into the DC power input port on the rear panel, then plug the adapter into an electrical outlet.
- Power On: Press the On/Off button to power on the device.
2. Operation
2.1 Indicator Lights
The front panel features several LED indicators that provide information about the device's status:

- Power: Indicates power status. (On: Device is powered on)
- PON: Indicates GPON network registration status. (On/Blinking: Registered/Connecting)
- LOS (Loss of Signal): Indicates loss of optical signal. (On: No optical signal detected)
- Internet: Indicates internet connectivity status. (On/Blinking: Connected/Data activity)
- LAN1-4: Indicate activity on the respective Ethernet ports. (On/Blinking: Connected/Data activity)
- Phone: Indicates voice service status. (On/Blinking: Service active/Call in progress)
- Wi-Fi: Indicates Wi-Fi functionality status. (On/Blinking: Wi-Fi enabled/Data activity)
- WPS: Indicates WPS function status. (Blinking: WPS pairing in progress)
- USB: Indicates USB port activity. (On/Blinking: Device connected/Data activity)
2.2 Wi-Fi Connectivity
The Zxa10 F670L supports dual-band Wi-Fi (2.4GHz and 5GHz) with IEEE 802.11 b/g/n/ac standards. The Wi-Fi network name (SSID) and password are typically found on a label on the device's underside.

To connect to the Wi-Fi network:
- Enable Wi-Fi on your device (smartphone, laptop, etc.).
- Search for available Wi-Fi networks and select the SSID corresponding to your Zxa10 F670L.
- Enter the Wi-Fi password when prompted.
2.3 Web Management Interface
The device can be configured via a web-based management interface. The default IP address, username, and password are usually provided by your service provider or found on the device label. Open a web browser and enter the device's IP address to access the interface.
3. Maintenance
3.1 Cleaning
To ensure proper ventilation and prevent overheating, regularly clean the device's exterior with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
3.2 Reset Button
The Reset button (located on the rear panel) can be used to restore the device to its factory default settings. To perform a factory reset:
- With the device powered on, use a thin object (e.g., a paperclip) to press and hold the Reset button for approximately 5-10 seconds.
- Release the button when the indicator lights begin to flash or the device reboots.
Warning: Performing a factory reset will erase all custom configurations, including Wi-Fi settings and passwords. You will need to reconfigure the device after a reset.
3.3 Firmware Updates
Firmware updates are typically managed by your service provider. Do not attempt to update the firmware manually unless instructed by your provider, as incorrect updates can damage the device.
4. Troubleshooting
- No Power: Ensure the power adapter is securely connected to the device and a working electrical outlet. Check the On/Off button.
- No Internet (Internet LED Off): Check the PON and LOS LEDs. If LOS is on, there is no optical signal; contact your service provider. If PON is off or blinking, the device may not be registered; contact your service provider. Ensure Ethernet cables are properly connected to your devices.
- No Wi-Fi: Check if the Wi-Fi LED is on. If not, ensure Wi-Fi is enabled via the web management interface. Verify your Wi-Fi network name (SSID) and password.
- Slow Internet Speed: Try restarting the ONU and connected devices. Ensure your fiber optic cable is not damaged or bent sharply. Consider connecting via Ethernet to rule out Wi-Fi interference.
- Cannot Access Web Management Interface: Ensure your device is connected to the ONU via Ethernet or Wi-Fi. Verify the correct IP address, username, and password. Try restarting the ONU.
5. Specifications

| Feature | Description |
|---|---|
| Model Number | F670L (ZXHN F670L) |
| Type | GPON ONU/ONT |
| Application | FTTH FTTB FTTX Network |
| Fiber Port | 1 GPON interface, SC single-mode |
| Downstream Rate | 2.5 Gbps |
| Upstream Rate | 1.25 Gbps |
| Wavelength | Tx 1310nm, Rx 1490nm |
| Fiber Interface | SC/UPC |
| RX Sensitivity | <-27dBm (1490nm) |
| WLAN (Wireless Function) | Yes, IEEE 802.11 b/g/n (2.4GHz, 2x2 MIMO), 802.11 a/n/ac (5GHz, 2x2 MIMO), external antenna (2dBi) |
| LAN Ports | 4 x 10/100/1000Mbps adaptive Ethernet ports (RJ45), full/half duplex |
| User-side Ports | 4GE + 1 POT (Phone) + USB + WIFI 2.4 & 5G |
| ONT Detection & Isolation | Yes |
| L2 Forwarding Capability | Wire speed forwarding for packets of any length |
| IPv4 L3 Forwarding Capability | 2Gbit/s (downstream), 1Gbit/s (upstream) |
| IPv6 L3 Forwarding Capability | 2Gbit/s (downstream), 1Gbit/s (upstream) |
| Configuration Method | NMS, Web, or TR069 |
| Voice Protocol | SIP, H.248 |
| DC Power Input | 100-240 V AC, 50-60Hz |
| DC Power Output | 11-14 V DC, 1 A |
| Buttons | Reset, Power On/Off |
| Power Consumption | ≤ 8W |
| Operating Temperature | 0°C to +40°C |
| Operating Humidity | 5-95% (non-condensing) |
| Dimensions (L*W*H) | 250 x 220 x 65mm |
| Net Weight | ≤ 0.8 Kg |
| Certification | CE |
| Firmware | English Version |
6. User Tips
- Optimal Placement: Place the ONU in a central location, away from obstructions and other electronic devices that may cause interference, to maximize Wi-Fi coverage.
- Cable Management: Ensure all cables (fiber, Ethernet, power) are neatly organized and not sharply bent or kinked, especially the fiber optic cable, to prevent signal loss or damage.
- Regular Reboots: If you experience connectivity issues, a simple reboot (powering off and on) of the ONU can often resolve temporary network glitches.
- Security: Regularly change your Wi-Fi password and keep it strong to protect your network from unauthorized access.
7. Warranty and Support
For warranty information and technical support, please contact your service provider or the vendor from whom you purchased the device. Our company is a professional manufacturer in fiber optic equipment, and we are confident in the quality of our products.
If you encounter any problems, please reach out to our support team. We aim to respond to all inquiries within 24 working business hours. Our goal is to ensure your satisfaction and maintain our excellent reputation.