Hi sodak i think you have a double wires is you house most of the times this can be fix if you go to the main box outside the house and connect the wires to make one single line for the whole house , open the box outside the house and just connect red with red yellow with yellow green and green etc. colors may be different, but all you have to do is connect the wires by colors and once you done; connect line one from the voipo box in one the of the house phone outlets, the line will work on the entire house DO NOT connect line two on any of the house phone outlets , you have to connet the second line in a phone by it self better if is a multiline phone so you can have that second line avalaible in other parts of the house