Wireless Howto | ||
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Web Site: http://www.siemens.com
What's that? These 2 components are not real PC cards but are more like modems that you use as external device.
Host1-serial - RadioModem1 - - - - - RadioModem2 - serial-Host2
How can I connect it?
If you see them in an abstract vision you can model them like this:
Host1-serial - - NULL MODEM CABLE - - serial-Host2
So you'd have a connection between 2 far serials with 2 possible configurations:
Linux with Windows, Linux has a daemon that answer to a ppp call while Windows has a Dial up connection under Remote Access.
Linux with Linux, where you can run (on all 2 hosts) a ppp connection, with IP addresses inverted.
For 1 you can use this simple script in Linux:
"/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"
where:
/dev/ttySx is your serial port,
IPDNS is the IP address of your dns server,
IPLINUX is the Linux IP address as IPWINDOWS is the Windows IP address.
The above script is need for letting Windows believe there is a modem on the serial end!
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).
With 2 Linux boxes you only have to run a very simple script like this at each Linux side:
"/usr/sbin/pppd passive local crtscts IPLINUX1:IPLINUX2 /dev/ttySx 115200 noauth persist"
where you'll invert IPLINUX1 with IPLINUX2 at the other edge.
Note that you can do authentication even Linux-Windows than in Linux-Linux if you want.