At 08:06 AM 9/25/95 PDT, Ross Scroggs <[log in to unmask]> wrote:
>Jon Diercks wrote a bunch of good stuff:
>
>> Using Back-to-Back DTC ports to permit inbound telnet without a TAC
>> ===================================================================
>        [snip]
>> Miscellaneous supplemental notes:
>>
>> The cable connecting the two DTC ports does *not* need to be crossed (i.e.
>> null-modem).
>
>Nope! The configuration of the port (terminal/printer/host) does not alter
>the hardware-level sense of the RS-232 signals. The ports operate as DCEs
>at the hardware level in all cases. If you hook two of them together, you
>must cross pins. At a minimum, 2-3, 3-2, 7-7 to connect two DTC ports.
>(For this discussion, it doesn't matter that the ports are DCEs; if you
>connect two like objects, the pins have to be crossed.)
 
Oops!  I stand corrected.  The test cable I was using was not marked
correctly and it was in fact crossed.  Thanks Ross, and to the
FAQ-maintainer, please edit in that correction.
 
 
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