I cannot do it right now (I am at work) but there is another problem with the TV. I cannot plug the antenna cable into the socket (it is an old two-outlet socket TV and R).
I could connect the cable with the Connection Box 3, but with the TV is not possible. So maybe it is a problem with the connection in my apartment/building? If so, who should I contact?
About the internet connection, I will find out later.
Thanks for your help,
Piotr