The advanced intelligent network uses call event triggers.
Triggers represent a halt in normal call flow.
They are like a branch instruction in a programming language. If this situation occurs, go to this database, tell it what happened, and then wait for further instructions. The best example of what the Advanced Intelligent Network can do is to show how it can be used to integrate voice calls with the Internet. Normally, an incoming call would get a busy signal, or go straight to voice mail. The marrying of analog and digital worlds.