88 lines
3.8 KiB
HTML
88 lines
3.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
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<!--Converted with LaTeX2HTML 96.1-c (Feb 29, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds -->
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<HTML>
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<HEAD>
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<TITLE>What Devices there are-- the port File</TITLE>
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</HEAD>
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<BODY LANG="EN">
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<A HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="contents_motif.gif"></A> <BR>
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<B> Next:</B> <A HREF="node167.html">How to Dial a </A>
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<B>Up:</B> <A HREF="node153.html">UUCP Configuration Files</A>
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<B> Previous:</B> <A HREF="node165.html">Restricting Call Times</A>
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<BR> <P>
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<H2><A NAME="SECTION0014370000">What Devices there are-- the port File</A></H2>
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<P>
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<A NAME="6611"></A>
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<A NAME="6135"></A>
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<A NAME="6136"></A>
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<P>
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The port file tells uucico about the available ports.
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These may be modem ports, but other types such as direct serial lines
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and TCP sockets are supported as well.
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<P>
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Like the sys file, port consists of separate entries
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starting with the keyword port, followed by the port name.
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This name may be used by in the sys file's port
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statement. The name need not be unique; if there are several ports
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with the same name, uucico will try each in turn until it finds
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one that is not currently being used.
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<P>
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The port command should be immediately followed by the
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type statement that describes what type of port is described.
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Valid types are modem, direct for direct
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connections, and tcp for TCP sockets. If the port
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command is missing, the port type defaults to modem.
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<P>
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In this section, we will cover only modem ports; TCP ports and direct
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lines are discussed in a later section.
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<P>
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For modem and direct ports, you have to specify the device for calling
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out using the device directive. Usually, this is the name of
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a device special file in the /dev directory, like
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/dev/cua1.<A HREF="footnode.html#6612"><IMG ALIGN=BOTTOM ALT="gif" SRC="foot_motif.gif"></A>
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<P>
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In the case of a modem device, the port entry also determines what type
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of modem is connected to the port. Different types of modems have to be
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configured differently. Even modems that claim to be Hayes-compatible
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needn't be really compatible with each other. Therefore, you have to
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tell uucico how to initialize the modem and how to make it dial
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the desired number. Taylor UUCP keeps the descriptions of all dialers
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in a file named dial. To use any of these, you have to specify
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the dialer's name using the dialer command.
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<P>
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Sometimes, you will want to use a modem in different ways, depending
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on which system you call. For instance, some older modems don't
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understand when a high-speed modem attempts to connect at 14400bps;
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they simply drop the line instead of negotiating a connect at, say,
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9600bps. When you know site drop uses such a dumb modem, you
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have to set up your modem differently when calling them. For this, you
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need an additional port entry in the port file that specifies a
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different dialer. Now you can give the new port a different name,
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such as serial1-slow, and use the port directive
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in drop system entry in sys.
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<P>
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A better way is to distinguish the ports by the speeds they support.
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For instance, the two port entries for the above situation may look
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like this:
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<P>
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<P><P>
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<P>
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The system entry for site drop would now give serial1
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as port name, but request to use it at 9600bps only. uucico
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will then automatically use the second port entry. All remaining
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sites that have a speed of 38400bps in the system entry will be called
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using the first port entry.
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<P>
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<A NAME="6169"></A>
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<P>
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<HR><A HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="contents_motif.gif"></A> <BR>
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<B> Next:</B> <A HREF="node167.html">How to Dial a </A>
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<B>Up:</B> <A HREF="node153.html">UUCP Configuration Files</A>
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<B> Previous:</B> <A HREF="node165.html">Restricting Call Times</A>
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<P><ADDRESS>
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<I>Andrew Anderson <BR>
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Thu Mar 7 23:22:06 EST 1996</I>
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</ADDRESS>
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</BODY>
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</HTML>
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