<sect1 id="connectivity-dialup-overview">

    <title>Overview</title>

    <para>
        This chapter describes an infrastructure where computers
        communicate one another through the telephone line.  This
        infrastructure could result very useful to you when you want
        to share IP packages with your friends and the only
        communication medium you and your friends have access to is a
        telephone network.
    </para>

</sect1>