RE: Re: Displays round the house

["Ian Lowe" <ian@xxxxxxx>]

>10Mbps (10Base-T) uses 2 pairs, 100Mbps (100Base-T) uses all 4 pairs
but i
>doubt we will ever need 100Mbps for these control level coms. For the
sake
>of the pedants out there there was a 100mbps (100Base-TX) protocol
that
used
>2 pairs but that died a death.

Typo?

Wrong way round. The 4-pair system died a death. Current 100Base-T
Ethernet
uses
pins 1,2,3,6 Orange pair and Blue Pair..

>Power over Ethernet info can be found at
>http://www.hyperlinktech.com/web/what_is_poe.html
and a whole walk through
>to make you own at http://www.nycwireless.net/poe/
Basically 1,2,3,6 are
>used for data and 4,5,7,8 for power, 2 conductors each for positive
and
>negative if single ended power is needed.

^This is the same for all current Ethernet over CAT-5, even Gigabit
only
uses 12,36 for Data, the other four are for POE. There was a thread
about
running the Fuji's over POE, I think Keith came up with the magic
numbers
for current capacity etc...

Ian.

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