Review Of Why Does My Home Phone Say Check Tel Line References. First, you will need to confirm if there is another individual on the line, as when the line in use is displayed, it means the line is currently active on a call. If the line checked out at the demarcation point the problem could be with the wiring.

The supplied telephone line cord has not been connected yet or not connected properly. If the cord is damaged, you should try plugging in another phone to check it. If the line checked out at the.