Marcelo Gornstein's Blog: Making your ivr nodes (call) flow with PAGI
The last article was about how to create call flow nodes for asterisk, using pagi and php, to easily create telephony applications. It's now time to add a layer on top of it, and create a complete call flow with several nodes.
He talks about NodeControllers to control execution flow, results from their execution, available actions and an example of creating a controller and adding nodes. He builds on this simple controller and shows how to handle a few actions including responding to user feedback, adding multiple menu options and some more complex logic using a closure to contain the functionality.