Interactive Voice Response (IVR) is an automated telephony system that interacts with callers, gathers information and routes calls to the appropriate recipient An IVR system accepts a combination of voice telephone input and touch-tone keypad selection and provides appropriate responses in the form of voice. An IVR is 10 Digit Mobile Number. Interactive Voice Response (IVR) is an automated telephony system technology that interacts with the callers, gathers the required information and routes the calls to the particular appropriate recipient.