old-www/HOWTO/Remote-Serial-Console-HOWTO/modem-minicom.html

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<HTML
><HEAD
><TITLE
>Using Minicom to give commands to
a modem</TITLE
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TITLE="Modem configuration"
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>Remote Serial Console HOWTO</TH
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><A
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>Chapter 12. Modem configuration</TD
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><DIV
CLASS="SECTION"
><H1
CLASS="SECTION"
><A
NAME="MODEM-MINICOM"
></A
>12.1. Using <SPAN
CLASS="PRODUCTNAME"
>Minicom</SPAN
> to give commands to
a modem</H1
><P
><SPAN
CLASS="APPLICATION"
>Minicom</SPAN
> is a full-screen serial
terminal emulation package, very much like the classic
<SPAN
CLASS="APPLICATION"
>Telix</SPAN
> terminal emulator for
<SPAN
CLASS="PRODUCTNAME"
>MS-DOS</SPAN
>.</P
><P
>Firstly, start <SPAN
CLASS="APPLICATION"
>Minicom</SPAN
> in
configuration mode with the command:</P
><DIV
CLASS="INFORMALFIGURE"
><A
NAME="AEN2872"
></A
><P
></P
><TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
><TT
CLASS="PROMPT"
>bash#</TT
> <B
CLASS="COMMAND"
>minicom -o -s</B
></PRE
></FONT
></TD
></TR
></TABLE
><P
></P
></DIV
><P
>The following menu appears:</P
><DIV
CLASS="INFORMALFIGURE"
><A
NAME="AEN2877"
></A
><P
></P
><TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
><SPAN
CLASS="GUIMENUITEM"
>Filenames and paths</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>File transfer protocols</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>Serial port setup</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>Modem and dialing</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>Screen and keyboard</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>Save setup as dfl</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>Save setup as..</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>Exit</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>Exit from Minicom</SPAN
></PRE
></FONT
></TD
></TR
></TABLE
><P
></P
></DIV
><P
>Select <SPAN
CLASS="GUIMENUITEM"
>Serial port setup</SPAN
> and
set</P
><DIV
CLASS="INFORMALFIGURE"
><A
NAME="AEN2890"
></A
><P
></P
><TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
><SPAN
CLASS="GUIMENUITEM"
>A - Serial Device:</SPAN
> <TT
CLASS="USERINPUT"
><B
>/dev/ttyS0</B
></TT
>
<SPAN
CLASS="GUIMENUITEM"
>B - Lockfile Location:</SPAN
> <TT
CLASS="USERINPUT"
><B
>/var/lock</B
></TT
>
<SPAN
CLASS="GUIMENUITEM"
>C - Callin Program:</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>D - Callout Program:</SPAN
>
<SPAN
CLASS="GUIMENUITEM"
>E - Bps/Par/Bits:</SPAN
> <TT
CLASS="USERINPUT"
><B
>9600 8N1</B
></TT
>
<SPAN
CLASS="GUIMENUITEM"
>F - Hardware Flow Control:</SPAN
> <TT
CLASS="USERINPUT"
><B
>Yes</B
></TT
>
<SPAN
CLASS="GUIMENUITEM"
>G - Software Flow Control:</SPAN
> <TT
CLASS="USERINPUT"
><B
>No</B
></TT
></PRE
></FONT
></TD
></TR
></TABLE
><P
></P
></DIV
><P
>Now save the configuration</P
><DIV
CLASS="INFORMALFIGURE"
><A
NAME="AEN2905"
></A
><P
></P
><TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
><SPAN
CLASS="GUILABEL"
>Give name to save this configuration?</SPAN
>
<TT
CLASS="PROMPT"
>&#62;</TT
> <TT
CLASS="USERINPUT"
><B
>console</B
></TT
></PRE
></FONT
></TD
></TR
></TABLE
><P
></P
></DIV
><P
>and exit <SPAN
CLASS="APPLICATION"
>Minicom</SPAN
>.</P
><P
>To configure a modem use the command <B
CLASS="COMMAND"
>minicom -o
console</B
> to start Minicom without sending an
initialization string to the modem. Now issue the
<TT
CLASS="LITERAL"
>AT</TT
> commands to configure the modem.</P
><P
>When finished use the <SPAN
CLASS="GUIMENUITEM"
>Quit</SPAN
> option
to leave <SPAN
CLASS="APPLICATION"
>Minicom</SPAN
> without sending a reset
string to the modem; this option is
<B
CLASS="KEYCAP"
>Alt</B
>-<B
CLASS="KEYCAP"
>Q</B
>.</P
><P
>Sometimes <SPAN
CLASS="APPLICATION"
>Minicom</SPAN
> will use
<B
CLASS="KEYCAP"
>Ctrl</B
>-<B
CLASS="KEYCAP"
>A</B
> rather
than <B
CLASS="KEYCAP"
>Alt</B
> to access the menu system, look for a
hint in <SPAN
CLASS="APPLICATION"
>Minicom</SPAN
>'s start up
message:</P
><DIV
CLASS="INFORMALFIGURE"
><A
NAME="MODEM-MINICOM-STARTUP"
></A
><P
></P
><TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
>Press ALT-Z for help on special keys</PRE
></FONT
></TD
></TR
></TABLE
><TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
>Press CTRL-A Z for help on special keys</PRE
></FONT
></TD
></TR
></TABLE
><P
></P
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>Prev</A
></TD
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><TR
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>Modem configuration</TD
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