Chapter 4. Initial Configuration of
Asterisk
Perseverance is the
hard work you do after you get
tired of doing the hard work you already did.
Newt Gingrich
The purpose of this chapter is to guide the user
through the configuration of four
channels: a Foreign eXchange Office (FXO) channel, a Foreign
eXchange Station (FXS) channel, a Session Initiation Protocol (SIP)
channel, and an Inter-Asterisk eXchange protocol (IAX) channel. The purpose is not to
give an exhaustive survey of all channel types or topologies, but
rather to provide a base platform on which to build your
telecommunications system. Further scenarios and channel
configuration details can be found in Appendix D. We start
by exploring the basic configuration of analog interfaces such as FXS and
FXO ports with the use of a Digium Dev-Lite kit . We'll then configure two Voice over
Internet Protocol (VoIP) interfaces: a local SIP channel connected
to a soft phone, and a connection to Free World Dialup via IAX.
Once you've worked through this chapter, you
will have a basic system consisting of many useful interfaces, and
you will be ready to learn more about the extensions.conf file (discussed further in
Chapter 5), which contains
the instructions Asterisk needs to build the dialplan.
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