[PLUG] cross connecting telephone

[Paul Johnson]

Aaron Burt <aaron at bavariati.org> writes:

> Also, ethernet only uses two pairs of a four-pair line.  You could make
> a clever splitter at the rack and the jack that breaks out one of the
> unused pairs as an RJ11 jack.  (Just make sure it's not a pair used
> for Power Over Ethernet.)

10MB ethernet doesn't use all pairs, but 100MB does.
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