Blame Manuals/Tcpi-ug/Configurations/Dialup/modem.docbook

528413
<sect1 id="configurations-dialup-modem">
c4b902
a899dc
    <title>The Modem Hardware</title>
ea6b40
ea6b40
    <para>
a899dc
        In order to establish a PPP link between two computers using
a899dc
        the telephone line as medium for data transmission, you need
a899dc
        to install (at least) one modem device in each computer.
ea6b40
    </para>
ea6b40
c4b902
    <para>
a899dc
        To install a modem device in computer you need to attach the
a899dc
        modem hardware to the computer and later the telephone line to
a899dc
        the modem hardware. To connect the modem to your computer, you
a899dc
        need to connect the serial or USB cable that comes from the
a899dc
        modem hardware to the appropriate input on your computer. To
a899dc
        connect the modem to the telephone line system, you need to
a899dc
        unplug the cable that connects your telephone device and plug
a899dc
        it on the modem device, specifically in the port reserved for
a899dc
        data transmission.  Later, using a similar cable, you could
a899dc
        connect your telephone device to the modem's telephone port,
a899dc
        so you can realize telephone calls when no data transmition
a899dc
        take place.
c4b902
    </para>
c4b902
c4b902
    <para>
c4b902
        To be on the safe side, do all the installation with the
c4b902
        computer turned off. Then, when everthing has been put in
c4b902
        place, turn it on. Once the system is up, you can verify the
c4b902
        modem hardware using either the <command>lsusb</command> or
528413
        <command>lspci</command> commands. These commands need to be
528413
        run with administrative privileges, so probably need to
528413
        <command>sudo</command> them or login as 
528413
        class="username">root</systemitem> user in order to execute
528413
        thme. For example, assuming you are logged in as root user,
528413
        and you are using an USB modem like that one we mentioned
528413
        before, the output of <command>lsusb</command> command would
528413
        look like the following:
c4b902
    </para>
c4b902
c4b902
<screen>
c4b902
Bus 003 Device 001: ID 0000:0000  
c4b902
Bus 001 Device 001: ID 0000:0000  
c4b902
Bus 001 Device 002: ID 058f:6366 Alcor Micro Corp. Multi Flash Reader
c4b902
Bus 002 Device 001: ID 0000:0000  
c4b902
Bus 005 Device 003: ID 06e0:f104 Multi-Tech Systems, Inc.
c4b902
MT5634ZBA-USB MultiModemUSB (new firmware)
c4b902
Bus 005 Device 001: ID 0000:0000  
c4b902
Bus 005 Device 002: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse
c4b902
Bus 004 Device 001: ID 0000:0000 
c4b902
</screen>
c4b902
c4b902
    <para>
c4b902
        The relevant line here is that mentioning the existence of a
c4b902
        Multi-Tech System, Inc. MT5634ZBA-USB MultiModemUSB (new
a899dc
        firmware) device. If the modem you installed doesn't
a899dc
        appear in this list, it is probably because such hardware is
a899dc
        not supported by &TC;;, yet.
ea6b40
    </para>
ea6b40
ea6b40
    <para>
a899dc
        At this point, everything is ready for you to install and
a899dc
        configure the computer either as server (see 
a899dc
        linkend="configurations-dialup-server" />) or client (see
a899dc
        <xref linkend="configurations-dialup-client" />).
528413
    </para>
528413
c4b902
</sect1>