A study of Design and Implementation of IVR System using Asterisk

now days it is very important for any organizations to provide interactive and cooperative customer care service using telephony with client interaction. The interactive voice response (IVR) system serves as a communication link between computer and people with connection of the telephone network with acceptable instructions. The telephone user can get access to the information wherever wanted at any random time with the convenience of dialing a specific registered number and following an automated instruction when a connection established. The Interactive voice response system makes use of computer generated voice responses or pre-recorded message to provide information for responding to the choice given by a telephone caller. This choice may be the input given by Dual Tone Multi-Frequency (DTMF) signal, which gets generated from the telephone set as user or caller presses a choice numbered key, and the sequence of messages to be played according to an internal menu structure and the user input. According to input given and wait time voicemail should be generated. In the proposed model, first the VoIP system has been implemented with IVR on asterisk cloud server which works as a VoIP service provider. The asterisk server is configured on Centos (Linux). The noticeable significance of the proposed system is Asterisk server itself configured as a VoIP server, IVR provider, VPN server, in a single asterisk server internally on cloud environment. There is one central server and many telephony endpoints registering with central server. The server's task is to resolve a dialed address to an IP address and establish a call connection for IVR.