To set up your router for fiber internet quickly, connect the router to your fiber modem, access the router's settings via a web browser, and input the provided ISP credentials. Make sure to update the firmware, configure Wi-Fi security, and customize your network name for optimal performance. As far as I understand, I need a PPPoE username and password to connect. I never received it from Telekom, as well as Access number (Zugangsnummer). For activating a new fiber connection, a fiber optic modem ID is needed, for which a separate. In this tutorial, we'll guide you step-by-step through simple and effective configuration of your TP Link fiber optic router. This can be done in two ways: Underground Installation – Fiber cables are placed in conduits underground, offering better protection from weather and physical damage.