[PLUG] cross connecting telephone

[Michael Rasmussen]

On Wed, Aug 25, 2004 at 04:18:27PM -0700, Stafford A. Rau wrote:
> > Paul> 10MB ethernet doesn't use all pairs, but 100MB does.
> > You want to cite your source on that one?
> 
> Here's what the Cisco CCNP BCMSN book says about it:
> Because UTP Ethernet connections use only pairs 1,2 and 3,6, 
> positions empty. Although this move provides Ethernet connectivity, it
> is not good practise for future needs.<snip> 
>
> So, yes and no.

No, so "no and no" 100mbs does not use all four pair.

Good wiring practices and Gigabit ether do use all pairs but not 100MB.


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