Interactive voice response (IVR), Interactive voice response (IVR) is a technology that allows a computer to interact with humans through the use of voice and DTMF tones input via a keypad. In telecommunications, IVR allows customers to interact with a company's host system via a telephone keypad or by speech recognition, after which services can be inquired about through the IVR dialogue. IVR systems can respond with pre-recorded or dynamically generated audio to further direct users on how to proceed. Out Bound Dial (OBD), Out Bound Dial (OBD) is a Dial-plan that provides the service for listed number from AIRTEL, MTN, ROSHAN. It dials from Program that they can here the Reasonable Prompts and Activates the Service. IN BOUND Dial (IBD), IN BOUND Dial (IBD) is a Dial-plan that costumer can connect to short-codes (SC) and choose the service on their request as it set up with the asterisk and perl program Flow.