LupusE
4
Okay, than I missed it, I take every statement back.
I think you have more experience, than me 
Edit:
Okay, hidden in Internet - Cable - Protocol. I’ve just used DHCP until now. Good to know.
So it should not be a problem to use the Beryl as main router in most cases. Since DSL is still a thing in Germany, I’d think you will need a DSL Modem, as well. At my fiber I’m able to use anything behind the CPL (? fiber endpoint in home) that is speaking PPPoE