Hello,
I have a RJ11 Wall plate (6P6C like this : https://www.amazon.com/Enerlites-6631-W-Telephone-6-Position-6-Conductor/dp/B01N4WQJ9B ) which was working when I plug in my phone.
When I'm connecting my modem (DSL port) to this wall plate it can't connect to internet.
Behind the wall plate...