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<!DOCTYPE HTML PUBLIC "-//Norman Walsh//DTD DocBook HTML 1.0//EN"><HTML><HEAD><TITLE>USB Modem Support</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet"><LINKREL="HOME"TITLE="The Linux USB sub-system"HREF="book1.html"><LINKREL="UP"TITLE="How to get USB devices working under Linux"HREF="c122.html"><LINKREL="PREVIOUS"TITLE="USB Audio Support"HREF="x319.html"><LINKREL="NEXT"TITLE="Printer Support"HREF="x342.html"></HEAD><BODY><DIVCLASS="NAVHEADER"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">The Linux USB sub-system</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="x319.html">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 2. How to get USB devices working under Linux</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="x342.html">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="AEN332">USB Modem Support</A></H1><P>USB modems (for plain old telephone service, ISDN or cable)are supposed to conform to the<AHREF="http://www.usb.org/developers/data/devclass/usbcdc11.pdf"TARGET="_top">Communication Device Class (CDC) specification</A>, and usuallyto the Abstract Control Model (ACM) sub-class. If your modem doesn'tcomply with the specification, it will not work with this driver.</P><P>You need to select the<TTCLASS="USERINPUT"><B>USB Modem (CDC ACM) support</B></TT> kernel option.If you build as modules, you need to install the <TTCLASS="FILENAME">acm.o</TT>option.</P><P>You need to set up the device node entries for the variousmodems. You can use up to 32 modems with this driver.Use the following commands to set up the first four:<TABLEBORDER="0"BGCOLOR="#E0E0E0"WIDTH="100%"><TR><TD><PRECLASS="SCREEN">mknod /dev/usb/ttyACM0 c 166 0mknod /dev/usb/ttyACM1 c 166 1mknod /dev/usb/ttyACM2 c 166 2mknod /dev/usb/ttyACM3 c 166 3</PRE></TD></TR></TABLE></P><P>You should now be able to use a terminal emulator program to attach tothis device and connect to your modem or other terminaldevice. Apparently this driver is working quite well, but I have notpersonally tested it.</P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="x319.html">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="book1.html">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="x342.html">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">USB Audio Support</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="c122.html">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Printer Support</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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