To connect a wireless router to fiber optic internet on Windows XP, link the router to the ONT via Ethernet, access the router's admin panel through a browser, input ISP credentials, and configure Wi-Fi settings for security and performance.

Step 1: Gather Equipment

Ensure you have the following:

• Optical Network Terminal (ONT) provided by your ISP.
• Wireless router with a Gigabit Ethernet WAN port compatible with fiber internet.
• Ethernet cable to connect the ONT to the router.
• Fiber optic cable already installed from your ISP to the ONT .

Step 2: Connect the Hardware

1. Connect the fiber optic cable from the wall outlet to the ONT.
2. Power on the ONT and wait for the status lights to stabilize (usually 2–5 minutes).
3. Use an Ethernet cable to connect the ONT's LAN port to the router's WAN port.
4. Power on the router and wait for the indicator lights to confirm a connection .

Step 3: Access the Router Admin Panel on Windows XP

1. Open Internet Explorer or another browser on your XP computer.
2. Enter the router's IP address (commonly 192.168.1.1 or check the router label) in the address bar.
3. Log in using the default username and password provided with your router .

Step 4: Configure Internet Connection

1. Select the WAN/Internet settings section.
2. Input your ISP credentials (PPPoE username and password if required).
3. Choose the connection type specified by your ISP (PPPoE, DHCP, or static IP).
4. Save the settings and allow the router to establish a connection .

Step 5: Set Up Wi-Fi

1. Navigate to the Wireless Settings section.
2. Set a network name (SSID) for your Wi-Fi.
3. Choose WPA2 or WPA3 security and create a strong password.
4. Save the settings and reboot the router if necessary .

Step 6: Optimize and Test

• Update firmware if available to ensure security and performance.
• Test the connection by browsing the internet or running a speed test.
• For critical devices, consider using wired Ethernet connections for maximum speed and stability . By following these steps, your Windows XP system will be able to access high-speed fiber optic internet through a secure and optimized wireless router setup.