In telephony, Interactive Voice Response (or IVR) is a telephone technology that allows a computer to detect voice and touch tones using a normal phone call. The IVR system can respond with pre-recorded or dynamically generated audio to further direct callers on how to proceed. IVR systems can be used to control almost any function where the interface can be broken down into a series of simple menu choices. Once set up, IVR systems generally scale well to handle large call volumes.
In the French language version of askiafield, this feature is known as SVI, or Serveur Vocal Interactif.