10 and 100 Mbps Ethernet use just 2 pairs (4 wires).

However with the impending finalizaton of a Gigabit Ethernet Standard for
UTP Cat 5 Cabling, it is  using all 4 pairs (8 wires).

For more info on Gigabit E. goto: http://www.gigabit-ethernet.org/

This site provides more info on how Gigabit-Ethernet will support
Cat 5 Cable on copper wire.

--Patrick Black
http://webpages.marshall.edu/~black27/

----- Original Message -----
From: Kent Tenney <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, June 06, 1999 10:27 AM
Subject: [PCBUILD] ethernet cable .. all 8 used?


> Howdy,
> I have heard that not all 4 pairs are used, that at least 1 pair
> is available, may be used for phone. Is this true? If so, what
> wires are not required for ethernet?
> TIA
> Kent
>
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