[Tfug] Yet another poser

[Rich]

On Sep 20, 2007, at 8:33 am, jblais wrote:

> The thing is, it appears that crossing comm signals makes sense,  
> crossing power doesn't.  So having a power crossover in your  
> toolbox makes little
> sense. Having something that looks like an RJ45, with swapped power  
> lines or whatever, for things other that Ethernet (ie custom RS232  
> stuff) doesn't make sense to me.

A crossover cable is EIA/TIA 568A to EIA/TIA 568B. A standard cable  
is either EIA/TIA 568A at both ends, or EIA/TIA 568B. So you're right  
-- the other lines should never be crossed.

Except, of course, when they should! http://www.ethermanage.com/ 
ethernet/100quickref/ch12qr_6.html

This thread could just run and run!
R.