A ringback tone is a short musical sound that plays when someone calls your phone and then hangs up. This sound is played before the person on the other end of the line gets sent to voicemail.
Ringback tones are an important part of the communication process. They are used to let the caller know that they have reached the right number and that they will soon be connected to their desired party.
The sound of a ringtone is the first thing you hear when someone is trying to contact you. It can be loud or soft, but it needs to get your attention and keep you connected.