An otherwise unspecified busy signal indicates that the called number is occupied: The called number is talking with another caller on the phone. The number is calling out. Someone else has called the number or is calling the number at the same time.

What does it mean when the line is busy?

If you try to make a telephone call and get a busy signal, it means that you cannot make the call because the line is already being used by someone else.

Does line busy mean I'm blocked?

If you get a busy signal or fast busy signal before your call is dropped, it's possible your number is blocked through their wireless carrier. If test calls a few days in a row have the same result, consider it evidence you've been blocked. ... Another clue is to send a text to the number.