Interactive Voice Response Systems are most commonly referred to just as IVR. At present, it a recognized option used while processing check cards, which include MasterCard or Visa debit cards, credit cards and certain checks (ACH - Automatic Check Handling) through any telephone. In fact, credit card IVR is the most common usage of this process. The latest technology that enables a computer to detect keypad inputs and voice is IVR. In places where huge volumes of incoming calls are handled, extensively use the facility of IVR or interactive voice response. Inbound call centers are one such example, where professionals make use of IVR system. Besides, telephonic banking, varied credit card transactions, and customer care help use the popular IVR application. IVR systems are even used for providing information and for entertainment purposes. To know about which is playing and at what times in theatres, IVR is used. For show polls and television voting even auto services like IVR is used to handle these. IVR is noted for its cost reduction and customer satisfaction. Any problems or queries of a customer are solved even when a person is not personally answering the call so that their work is simplified and the customer is satisfied as well. Credit card IVR along with other IVR services use Text-To-Speech technology, which is a complex speech produced by computer. Interactive voice response also uses automatic call distributor technology i.e. ACD, which in turn employs 'digital storage devices' for playing the announcements and the greetings. Some other technologies that are used include CCXML, Voice XML, SALT, SRGS, and T-XML languages are used.