Ringback

Ringback may refer to:


 * Ringback, the ringing signal in telephony used to recall an operator or customer
 * Ringing tone, also ringback tone, the audible ringing that is heard by the calling party after dialing
 * Ringback number, a number used by phone companies to test whether a telephone line and phone number is working
 * Automatic ring back, a telephone feature to notify the caller when the called party ceases to be engaged