Mike Wright writes:
Sunday I'll go buy two connectors and wire my own 3-wire null modem cable: ground, tx, rx.
With that, you have to turn hardware flow control off.
I would also recomment crossing DTR with DSR and CTS, to get hardware flow control.
I'm tending to agree with you that something in
the cable chain is messed up.
A gender-changer is NOT the same thing as a null-modem adapter. That's the most common oversight. If you have something in there that swaps the genders around, it might be just a straight-through gender-changer. In addition to changing genders, the right pins need to be crossed, that's what a null- modem adapter does.