Hello, I just moved in to a new apartment and I ordered Wifi from Telekom.

But I found one problem,

I cannot get the internet. The Signal strength is excellent, so it's not router problem I think. 

I asked landlord, and he checked socket.

He said, probably this DSL socket is too old or not right socket.

Probably internet is somewhere, but cannot connect it because of socket problem.

How can I get the right socket?