H Not sure whether it's a good description or not. Reading through
it I can see what he means, but I don't think I'd trust it too far. With a 4
level code you could transmit 2 bits over a pair of wires
00
01
10
11
,which I suppose simplified means one bit per wire (yuk - not really).
I think he means "125 million times per second".
And short answer to your question, yes I think "1 bit per wire" is very
misleading. One wire can only be at a level with respect to the other wire
of the pair.
Gaz
""Michael Williams"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hartnell, George wrote:
> >
> > I did not note a speed associated with that full-duplex
> > Ethernet spec.
> > Wouldn't GigE Cu require all eight? And, might a new cable
> > plant effort be
> > well-served to require all eight conductors per RJ?
> >
> > Best, G.
> > VP OGC
>
> I'm so far removed from Gig at this point I didn't realize that it used
all
> 8 wires. So I dug around and found this page talking about Gig ethernet
and
> it had some comments I don't quite get and I want all of your input on
> this. The article, located here (watch for wrap):
>
> http://www.networkuptime.com/columns/copper_gig/
>
> says: "1000BASE-T sends and receives signals simultaneously on the same
> pair of wires by combining a 5 level coding scheme, thus 4 pairs of wire
> allow 1000BASE-T to send a single byte (one bit per wire) in parallel at
> each signal pulse 125 times per second."
>
> How is it sending 1 bit per wire? How's this? Someone tell me if this is
> correct or if this phrase is just misleading or what.
>
> Thanks!
> Mike W.
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