1. Introduction
The ZTE F670L is an Xpon Optical Network Terminal (ONT) designed for Fiber-to-the-Home (FTTH) and Fiber-to-the-X (FTTX) network deployments. It provides high-speed internet access, voice services, and dual-band Wi-Fi connectivity (2.4G and 5G) to residential and small business users. This manual will guide you through the installation, operation, and maintenance of your F670L device.
2. Package Contents
The standard package for the ZTE F670L typically includes:
- ZTE F670L Xpon Onu ONT device
- (Note: This product is supplied without a power adapter and retail box. A compatible 12V 1.5A power adapter is required.)
3. Physical Overview
Familiarize yourself with the ports and indicators on your ZTE F670L ONT.
Figure 3.1: Front View (LED Indicators)
Figure 3.2: Rear View (Ports)
Figure 3.3: Bottom Label (Product Information)
3.1. Port Descriptions
- PON Port (SC/UPC): Connects to the optical fiber network.
- GE Port (Gigabit Ethernet): One Gigabit Ethernet port for high-speed wired connections.
- FE Ports (Fast Ethernet): Three Fast Ethernet ports for wired connections.
- TEL Port: For connecting a telephone for voice services.
- USB Ports: Two USB ports for connecting external devices (e.g., storage).
- Power Port: For connecting the 12V 1.5A DC power adapter.
- Reset Button: Used to restore factory default settings (usually a small pinhole button).
3.2. LED Indicators
The front panel LEDs provide status information:
- Power LED: Indicates power status.
- PON LED: Indicates PON network connection status.
- LOS LED: Indicates loss of optical signal.
- LAN LEDs: Indicate status of Ethernet ports.
- WLAN LEDs: Indicate Wi-Fi activity for 2.4G and 5G bands.
- TEL LED: Indicates telephone service status.
4. Setup Instructions
- Power Connection: Connect a compatible 12V 1.5A DC power adapter (not included) to the ONT's power port and plug it into an electrical outlet. The Power LED should light up.
- Optical Fiber Connection: Carefully connect the optical fiber cable from your service provider to the PON port (SC/UPC) on the ONT. Ensure the connection is secure. The PON LED should start blinking and then turn solid when a connection is established. If the LOS LED is lit, there is a problem with the optical signal.
- Ethernet Connection (Optional): Connect your computer or other network devices to the GE or FE Ethernet ports using standard Ethernet cables. The corresponding LAN LED will light up.
- Telephone Connection (Optional): Connect your telephone to the TEL port.
- USB Devices (Optional): Connect any USB storage devices to the USB ports.
- Wi-Fi Activation: The Wi-Fi function is typically enabled by default. Refer to the bottom label of the device (Figure 3.3) for the default Wi-Fi Network Name (SSID) and Password.
5. Operating Your ONT
5.1. Wi-Fi Connectivity
The ZTE F670L supports dual-band Wi-Fi (2.4GHz and 5GHz). To connect your wireless devices:
- On your device (smartphone, laptop, etc.), search for available Wi-Fi networks.
- Select the SSID (network name) found on the bottom label of your ONT.
- Enter the Wi-Fi password (also on the bottom label) when prompted.
5.2. Accessing the Web Management Interface
For advanced configuration, you can access the ONT's web management interface. The default IP address, username, and password are usually provided by your service provider or printed on the device label. Open a web browser, enter the IP address, and log in with the credentials.
5.3. TR-069 Support
The device supports TR-069, which allows your Internet Service Provider (ISP) to remotely manage and configure the ONT, including firmware updates and troubleshooting.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid or aerosol cleaners.
- Ventilation: Ensure the ONT is placed in a well-ventilated area to prevent overheating. Do not block the ventilation holes.
- Firmware Updates: Firmware updates are typically managed by your ISP via TR-069. Do not attempt to manually update firmware unless instructed by your ISP.
- Resetting to Factory Defaults: If you experience persistent issues, you can reset the device to its factory default settings by pressing and holding the Reset button for approximately 5-10 seconds with a paperclip or similar pointed object. Note that this will erase all custom configurations.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power LED | Power adapter not connected or faulty. | Ensure the power adapter is correctly connected and plugged into a working outlet. Verify the adapter is 12V 1.5A. |
| LOS LED is lit | Loss of optical signal. | Check the fiber optic cable connection. Do not bend or damage the fiber cable. Contact your ISP if the issue persists. |
| No Internet Access | PON not connected, ISP issue, or incorrect configuration. | Check PON LED status. If PON LED is solid, restart the ONT. If still no internet, contact your ISP. |
| Wi-Fi Not Working | Wi-Fi disabled, incorrect password, or signal interference. | Check WLAN LEDs. Ensure Wi-Fi is enabled. Verify Wi-Fi password. Try moving closer to the ONT or changing Wi-Fi channels via the web interface. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand Name | ZTE |
| Model Number | F670L |
| Type | GPON ONU/ONT |
| Application | FTTH FTTX FTTP Network |
| Ports | 1GE + 3FE + 1TEL + 2USB + WIFI |
| Wi-Fi | 2.4G + 5G Dual Band |
| Fiber Type | Single Mode, SC/UPC |
| Connector Type | SC/UPC |
| WAN | SC/UPC port |
| Firmware | English Firmware |
| Wireless Function | Yes |
| Power Source | Powered (External 12V 1.5A DC adapter required) |
| TR-069 Support | Yes |
| Certification | CE, FCC |
| Origin | Mainland China |
| Package Length | 25 cm |
| Package Width | 20 cm |
| Package Height | 10 cm |
| Package Weight | 1.35 kg |
9. User Tips
- Power Adapter: As the device does not come with a power adapter, ensure you acquire a compatible 12V 1.5A DC power adapter to avoid damage and ensure proper operation.
- Default Wi-Fi Credentials: Always check the label on the bottom of the ONT for the default Wi-Fi SSID and password before attempting to connect.
- Placement: For optimal Wi-Fi performance, place the ONT in a central location, away from obstructions and other electronic devices that may cause interference.
10. Warranty and Support
The ZTE F670L ONT is certified with CE and FCC standards, ensuring compliance with relevant safety and performance regulations.
For detailed technical support, warranty information, or service-related inquiries, please contact your Internet Service Provider (ISP) or the product manufacturer directly. They can provide specific guidance tailored to your network setup and any potential issues.
A comprehensive user manual in PDF format may be available for download from the manufacturer's or seller's website. (Reference: User manual (PDF))





