Asterisk Gateway Interface 1. What is Asterisk Gateway Interface? In simple word AGI is Language Independent API to programmers to control the call flow on their Asterisk PBXs. Asterisk provides more than its own dial-plan, to control to the call flow or lets say call logics. So which means you may use either one of Dialplan Asterisk Manager Interface (AMI) Asterisk Gateway Interface (AGI) to manipulate your call logics. Before we move on to AGI lets briefly discuss about each one of above, Dialplan Dial plan is Asterisk native call logics performer, it's fast, easy to learn and efficient. But this configuration script is more closer to assembly program (If you have any previous experience on assembly), the main drawback of the Asterisk Dialplan in it's lack of support on standard procedural language as an example when you want create a loop. Any way in the following tutorials we will only discuss about the AGI, But we can't av...