If you received a pre-configured router from Telekom, just plug it in – Wi-Fi details are on the sticker. For fiber or cable internet, the steps are similar but use DHCP instead of PPPoE.

Translated — Wireless Network Setup * Configure network name (SSID) * Select wireless channels: 2.4 GHz band: Channels 1, 6, or 11. 5 GHz band: How to rename your Wi-Fi network | Deutsche Telekom

When adjusting security settings, ensure the encryption is set to or WPA3 (if supported). These standards offer the highest level of protection against unauthorized users "piggybacking" on your internet connection.