Orange Livebox 2 - Phone Light

Hi all,I’m posting this on behalf of my parents who aren’t very tech-savvy. We have an Orange Livebox 2 that provides us with an internet connection and a landline. However at the moment the “phone light” on the front of the box is off when it should be lit green, meaning that our landline is not functioning. Is this something that we can fix or do we have to contact Orange? Also, would this explain why we cannot get a signal for Sky on the television? Best regards, Becky