Hello

First of all, I am sorry that I am writing in English because my German is not so good and translation tools can sometimes translate incorrectly. 

Construction for fiberoptic internet has begun in my area, and in the coming months I will have 1 Gbit fiber connection at my home. My question is, do I have to use Telekom provider router and fiber modem (Speedport 4 Plus or Speedport Pro Plus and fiber modem), or can I use below products?

AmpliFi Alien Router – Ubiquiti Store Europe as router and UFiber WiFi6 GPON CPE – Ubiquiti Store Europe as fiber modem.