So far, we have decided to use Asterisk to meet our needs, created a plan, prepared a server, and installed Asterisk and its supporting libraries. Now we have come to the more artistic part of any open source solution—configuration. We get to choose how to use Asterisk's power and flexibility to meet our real-world needs.
While the order in which we proceed makes sense, it is not necessary that we follow it precisely. We can configure the pieces in any order we want. The only issue we may encounter is that if we have not completely configured one part of Asterisk, the PBX may not start, or may start without full capabilities. This is not a real problem, as we are still configuring and will be testing our PBX later.
Thus, if we become unsure about how to proceed in one section, it may be best to move on, and configure the next part. Then, we can go back to where we left off. We often need a little bit of time to digest some information.
What we will now do...