Getting Cox Cable Contour TV service when connected to a different cable TV wall outlet in my apartment

I have Cox Cable Contour TV and internet service for one TV in my 1-BR apartment one receiver). I have two co-ax cable wall outlets in my apartment (one in living room and one in bedroom).  My TV service works (connects) when the TV/receiver is connected to the Cable Wall Outlet in my living room but not when connected to the wall outlet in my bedroom. How can I make it work using the outlet in my BR?