wrote in message
...
When we had our extension built recently, I took the opportunity to
install a Cat5 LAN. Well, to be more accurate, the electrician ran
the cabling in but said he didn't do network wiring so the tails sat
there for a while until eldest son got his new laptop. I got a friend
who is an experienced network engineer with his crimping tool to
install the face plates for the network points.
A diagram of the network is he
http://www.flickr.com/photos/30588773@N04/2864919945/
The engineer had a wee gizmo that he plugged into the individual
points and then another into the 4-gang which lit up to show that the
wires were correctly connected. Everything seemed fine and dandy and,
as I say, he's an experienced engineer.
Unfortunately the network doesn't work. A laptop plugged into any of
the individual 1-gang outlets can't see the network. However, if it's
plugged directly into the back of the router, all is fine.
Anyone any thoughts? I bought the cable from work (we do network
installations, though I'm a software engineer myself) - it's
unshielded twisted pair, and it's what we have in our work LAN.
Thanks
Edward
In addition to what the others have said ( incorrect patch cables ); can you
unscrew the face-plates, and either take a picture or describe what wires
have been punched down into which terminals?
I'd expect it to be:
1 Orange / White
2 Solid Orange
3 Green / White
4 Solid Blue
5 Blue / White
6 Solid Green
7 Brown / White
8 Solid Brown
( The Orange twisted pair may be swapped withthe Green twisted pair on some
installations, that's OK )
What's important it the twisted pairs.
One pair ( usually orange ) is used for pins 1+2.
Another pair ( usually green ) is used for pins 3+6.
This is critical.
The blue pair and brown pair are only used on gigabit and / or PoE systems,
but these are becoming commonplace, and should be wired up correctly too.
A common wiring error is to use one pair for 1+2,
another for 3+4, another for 5+6, another for 7+8.
This will not work properly.
It is essential that one twisted pair is used for 3+6, as described above.
--
Ron