Compatible with any connection You can use your FRITZ!Box with any IP-based DSL connection (ADSL2+ and VDSL including supervectoring). Alternatively, you can run it behind a fiber optic or cable modem and simply integrate it into an existing Wi-Fi network. It can also be operated with a 4G/3G dongle. High speed with VDSL supervectoring With FRITZ!Box you are well prepared for future developments:...
> https://en.fritz.com/products/fritzbox/fritzbox-7690/details/
Thanks to Zigbee integration, the Smart Home from FRITZ! is compatible with even more manufacturers. The number of Zigbee devices supported is growing constantly, and currently extends from lighting to sensors all the way to flush-mounted modules.
> https://en.fritz.com/guide/zigbee-in-the-fritz-smart-home/