Up to this point, we have worked through the setting up of a new phone system based on Asterisk. Our system has been developed with our specific needs in mind and has configurations and features enabled to fit our particular purposes. Often we will find ourselves wondering if we're making full use of the magic of Asterisk, and perhaps the best way to find new tricks is to examine examples of working phone systems.
What follows in this chapter are typical examples of just a few such systems. Each section will be devoted to one type of system. First, we will give a brief overview of the type of customers involved before we mention some pointers to remember as we decide what they need and how best to accomplish our task. Finally, we will go through the configuration files, one at a time. Each configuration file will be annotated, and we will briefly discuss why some of the choices are particularly good for the given scenario.