<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>