Modem/ADSL cable?

so hello first of all, I have a cable problem I have an ISDN modem and about a year ago I got an ADSL modem that was connected to the ISDN until now I only went online via WLAN but now I also want to connect to the internet by cable in the rooms there is already a cable connected to the socket but what do I have to do to surf via ADSL in the room? thanks in advance

images:**please upload**

just on: "adsl bilder"
since the images are unfortunately too large to upload

what is not a possibility to answer?

Hello derpede

Just use Powerline. I also use it myself and it works flawlessly. e.g. ZyXEL PL-100. You can get it from various retailers.

Regards bausepp

so that I understand you correctly, you already have an ISDN connection in every room. In one room there is an ADSL router (ISDN) with which you connect to the internet wirelessly? if that is correct, my answer is the sockets in the other rooms cannot be used directly; another ADSL modem would be needed for that. however, it would be better to use the existing router, through an additional network connection or why actually not more wireless? there are also options to use the electrical network as a network connection (details on request) ps. the link to the picture does not work