Messages in this thread | | | From | "Paul Rolland" <> | Subject | Re: "Spy'ing" characters sent thru serial port ? | Date | Thu, 7 Jul 2005 08:10:50 +0200 |
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Hi Jeff,
> I don't have any software answers, but it sounds like the modem is an > external type connected by RS232 cable to a serial port. RS-232 is > pretty simple at the hardware level and you should be able to create > a "Y" cable that "sniffs" the transmit from the computer to modem > line without interrupting the dialogue between the serial port and > modem. Just connect the transmit and signal ground lines to the > receive and signal ground lines of a serial terminal or another > computer with some terminal software (or even "cat </dev/serial1" or > similar) listening to the serial port. Back in Ye Olde Days (1980s) > we used to diagnose modem problems like that all the time.
Sure, that's what we did... provided you have a physical access to the machine to install such a cable and a second machine... But as my only real access is thru an Ethernet cable, I was trying to identify a software solution.
However, it looks like we're gonna have to go to yours, and try to find a way to access the machine physically...
Thx, Paul
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