If you've worked through all of the sections in this chapter, you will have configured a pair of analog interfaces, a local SIP and IAX2 channel connected to a softphone and/or a hardphone, and placed calls across servers using the SIP and IAX2 protocols. These configurations are quite basic, but they give us functional channels to work with. We will make use of them in the following chapters, while we learn to build more useful dialplans.