Toby Wrote: 
> 
> I don't need cross wired connections. So, do I still need a tester?

Depending on what you mean by 'cross wired' that may be your problem.

Ethernet cables, especially at 100Mbps, need to be crossed, or, rather,
paired.  What you'll see at the end of an ethernet cable is like this:

1)   Green/White
2)   Green
3)   Orange/White
4)   Blue
5)   Blue/White
6)   Orange
7)   Brown/White
8)   Brown

See that weird seperation of the Orange and Orange/White?  It matters.

Why?  Because those are actually pairs of "TX+" and "TX-", when one
goes high, the other goes low, this is used to reduce noise
interference.  If you pair them wrong, it will work fine and dandy for
telephone, will be flaky with 10Mbps ethernet (my machine at work had a
cable installed by a phone guy unclear on the correct order... it would
work fine until there was "too much" traffic then packet loss would go
through the ceiling).  I doubt it would work at all at 100Mbps.

If you pair them wrong, basically what you get is a long antenna next
to some wires.

Are premade ethernet cables that spendy in Germany?  That's bizarre:
you can get a 50ft premade cable for $25 at Office Depot (big expensive
office supply chain) here.  We don't even bother making our own any
more: the handeye coordination just isn't worth the trouble when a
premade cable is so cheap (and cheaper when you buy from someone other
than Office Depot).


-- 
snarlydwarf
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