OT: cat 5 cable, ethernet, connection jacks

[James Knott]

Lennart Sorensen wrote:
> the hub (is it a hub?  anyone still use hubs when switches are almost
> free?  Don't you like full duplex?).  I believe pin 1&2 is the first
> pair, and 3&6 is the second pair for normal ethernet.  4&5 is the pair
> originally reserved for phone use, but that too causes lots of noise,
> and 7&8 is the last pair.

Twisted pair ethernet was designed to share cables with analog 
telephones.  Also, the frequencies used by ethernet are far removed from 
those used by phones, so there's likely not much interference.
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