DSL connection only works on one phone jack?

Lately, I've been having trouble with unstable internet connection.

My router is in the basement, while my computer is on the second floor. Sometimes, the internet disconnects itself and I'm left with a "No connection" page. I decided that it'd be better for me to move the router to my room for an ethernet connection. However, when I tried to connect my router to the DSL plug in my room, Broadband 1 and 2 started blinking red. I tried it in different rooms as well, but the only jack that it worked in was the one in the basement.

Is there a way for me to make the phone jack in my room work for DSL as well?

I have the NVG589 model.