I recently moved into a new flat that has TAE boxes - the German standard for connecting a router/modem to the external phone / DSL line; I believe the US equivalent would be RJ - in three separate rooms.
From what I read online, it is not possible to connect a router to each of these in order to have internet in each room. It seems that it is also strongly recommended to only use the first TAE box.
My question is: What use are the other boxes? Is there any way I can use them to distribute my DSL connection to the other rooms?