<HTML ><HEAD ><TITLE >Serial console is not /dev/modem</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Remote Serial Console HOWTO" HREF="index.html"><LINK REL="UP" TITLE="Configure incidentals" HREF="misc.html"><LINK REL="PREVIOUS" TITLE="Remove saved console settings" HREF="misc-remove-ioctl-save.html"><LINK REL="NEXT" TITLE="Alter target of /dev/systty" HREF="misc-devsystty.html"></HEAD ><BODY CLASS="SECTION" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Remote Serial Console HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="misc-remove-ioctl-save.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 7. Configure incidentals</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="misc-devsystty.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECTION" ><H1 CLASS="SECTION" ><A NAME="MISC-DEVMODEM" ></A >7.4. Serial console is not <TT CLASS="FILENAME" >/dev/modem</TT ></H1 ><P >In many Linux distributions the file <TT CLASS="FILENAME" >/dev/modem</TT > is a symbolic link to the serial port containing a modem which is available for use.</P ><P >Although the serial console is a serial port with a modem, we certainly don't want it used to place an outgoing call.</P ><P >Check that <TT CLASS="FILENAME" >/dev/modem</TT > does not point to the serial port being used for the console, say <TT CLASS="FILENAME" >/dev/ttyS0</TT >. If it does, then remove the symbolic link.</P ><DIV CLASS="FIGURE" ><A NAME="MISC-DEVMODEM-EXAMPLE" ></A ><P ><B >Figure 7-5. Remove <TT CLASS="FILENAME" >/dev/modem</TT > if it points to the serial console's port</B ></P ><TABLE BORDER="1" BGCOLOR="#E0E0E0" WIDTH="100%" ><TR ><TD ><FONT COLOR="#000000" ><PRE CLASS="SCREEN" ><TT CLASS="PROMPT" >bash$</TT > <B CLASS="COMMAND" >ls -l /dev/modem</B > <TT CLASS="COMPUTEROUTPUT" >lrwxrwxrwx 1 root root 10 Jan 01 00:00 /dev/modem -> /dev/ttyS0</TT > <TT CLASS="PROMPT" >bash#</TT > <B CLASS="COMMAND" >rm /dev/modem</B ></PRE ></FONT ></TD ></TR ></TABLE ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="misc-remove-ioctl-save.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="misc-devsystty.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Remove saved console settings</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="misc.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Alter target of <TT CLASS="FILENAME" >/dev/systty</TT ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >