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In-reply-to: Your message of "Sun, 23 Jun 2019 20:53:19 -0400."
 <c9ca5a7f-4ba4-0273-6f49-57ba0ee61a06@kilonet.net>
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Comments: In-reply-to Arthur Krewat <krewat@kilonet.net>
 message dated "Sun, 23 Jun 2019 20:53:19 -0400."
From: Bakul Shah <bakul@bitblocks.com>
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Date: Sun, 23 Jun 2019 18:40:13 -0700
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Subject: Re: [TUHS] Floppy to modern files for Usenet maps
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On Sun, 23 Jun 2019 20:53:19 -0400 Arthur Krewat <krewat@kilonet.net> wrote:
> Both the AT&T and the USB cable will be "DTE" (Data Terminal Equipment - 
> ala terminal) vs. "DCE" (Data Communication Equipment - ala modem) - 
> you'll need a null-modem cable to correct that mismatch. Basically, if 
> not using hardware handshake, swap pin 2 and 3. ;)

Since mid 80s I have used Dave Yost's wiring scheme that
converts a DB-25 or DB-9 adapter to an RJ-45 socket:

http://yost.com/computers/RJ45-serial/

You wire any DB-25 or DB-9 DCE or DTE male or female adapter
so that the RJ-45 socket has the above pinout.  You figure
out which device needs what kind of adapter and permanently
attach the adapter.  Now you can use a standard "half-twist"
phone cable with 4, 6 or 8 wires and connect anything to
anything.

My last device with a real RS-232 interface (a CP-290 X10
controller) where I used this died 4-5 years ago. I still use
serial ports on RaspberryPis but talk to them via serial<->USB
adapters (these are 3.3V uarts).