<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <HTML> <HEAD> <META NAME="GENERATOR" CONTENT="SGML-Tools 1.0.9"> <TITLE>Wireless Howto: Appendix B - Siemens DECT Radio Modem </TITLE> <LINK HREF="Wireless-HOWTO-10.html" REL=previous> <LINK HREF="Wireless-HOWTO.html#toc11" REL=contents> </HEAD> <BODY> Next <A HREF="Wireless-HOWTO-10.html">Previous</A> <A HREF="Wireless-HOWTO.html#toc11">Contents</A> <HR> <H2><A NAME="s11">11. Appendix B - Siemens DECT Radio Modem </A></H2> <P>Web Site: <A HREF="http://www.siemens.com">http://www.siemens.com</A><P>What's that? These 2 components are not real PC cards but are more like modems that you use as external device. <P> <PRE> Host1-serial - RadioModem1 - - - - - RadioModem2 - serial-Host2 </PRE> <P>How can I connect it? <P>If you see them in an abstract vision you can model them like this: <P> <PRE> Host1-serial - - NULL MODEM CABLE - - serial-Host2 </PRE> <P>So you'd have a connection between 2 far serials with 2 possible configurations: <P> <P> <OL> <LI>Linux with Windows, Linux has a daemon that answer to a ppp call while Windows has a Dial up connection under Remote Access. </LI> <LI>Linux with Linux, where you can run (on all 2 hosts) a ppp connection, with IP addresses inverted. </LI> </OL> <P>For 1 you can use this simple script in Linux: <P>"/usr/sbin/pppd -detach lock idle 300 crtscts connect "/usr/sbin/chat -v TIMEOUT 5 AT OK AT OK AT OK AT OK" IPLINUX:IPWINDOWS /dev/ttySx 115200 disconnect "/usr/sbin/chat -v AT OK" ms-dns IPDNS" <P>where: <P> <UL> <LI>/dev/ttySx is your serial port, </LI> <LI>IPDNS is the IP address of your dns server, </LI> <LI>IPLINUX is the Linux IP address as IPWINDOWS is the Windows IP address. </LI> </UL> <P>The above script is need for letting Windows believe there is a modem on the serial end! <P>In Windows you need to create a Dial Up connection with crtscts enabled, speed at 115200 and with a stupid number to call (need by Remote Access but absolutely not used). <P>With 2 Linux boxes you only have to run a very simple script like this at each Linux side: <P>"/usr/sbin/pppd passive local crtscts IPLINUX1:IPLINUX2 /dev/ttySx 115200 noauth persist" <P>where you'll invert IPLINUX1 with IPLINUX2 at the other edge. <P>Note that you can do authentication even Linux-Windows than in Linux-Linux if you want. <HR> Next <A HREF="Wireless-HOWTO-10.html">Previous</A> <A HREF="Wireless-HOWTO.html#toc11">Contents</A> </BODY> </HTML>
