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Old 07-13-2006, 03:52 AM   #1
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Registered: Jun 2003
Location: Denmark
Distribution: Ubuntu 6.06
Posts: 20

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Serial connection through telnet

My laptop have one serial port, which shows up as /dev/ttyS0 I guess. (Not very good with this).
I'd like to know how I telnet to this port, set speed and other connection parameters. Have been able to find tons of information on telnet, just nothing that actually involves using a serial port.
My user belongs to the group which are allowed to use ttyS0, but I have no clue on syntax for the actual telnet command.
Any pointers?

If it's of any importance, I run Ubuntu 6.06 with a 2.6.15 kernel.
Old 07-13-2006, 06:38 AM   #2
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Registered: Mar 2006
Posts: 1,896

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To my knowledge, telnet is strictly for communication over TCP/IP, not for direct use with serial ports.

I think maybe you are wanting a serial communications program like minicom? This is similar to the functionality that MS's hyperterminal used to have. (I believe more recent versions of hyperterminal also include telnet functionality.)

Check out minicom's man page before attempting to use it. You need to first run it as root with the -s option to set it up for a normal user. The port parameters can be configured within minicom.

Last edited by blackhole54; 07-13-2006 at 06:41 AM.


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