Cat 5 utp cable question

I have 2 computers at home pc1 downstairs and pc2 upstairs.
A friend installed the cable and placed a box with cat 5 modules next to
each machine,
so all i have to do is use a patch cable from the box to the pc.
the cable has been setup for cross over - as only two machines are
networked.
(568a downstairs at one end and 568b Upstairs at the other)

If i want to move the computer upstairs into a different room, is it
possible to just make a
cable and plug it into the box upstairs and extend into the new room, or do
i have to get a longer cable.

Also if this is possible do i keep the standard downstairs for pc1 to 568a
and change the one upstairs Pc2 to 568a
and then for the extended bit change that to 568b standard - this to me
seems like one long cross cable
but i'm not sure and any help would be appreciated.


Thanks

JiMi

 

This is an odd way to try and describe the problem.... 568a downstairs
at one end and 568b Upstairs. You don't want to start getting into that.

It's simple, the cable in the wall is straight through (a patch), the
cable from 1 pc to the wall is a patch. The 2nd PC uses a crossover from
the PC to the wall.

You can do either -

Plug a patch cable into the wall box and run it to another socket (which
involves more crimping) then from the socket use a crossover to the PC.
(not my fav way to do it, but it will work)

or

Simply use a longer cable which will be a crossover.
(sometimes you can't get long crossovers, if crimping an end on a long
patch is trouble, it's possible to get F-F cross over adapters, not my
first choice again).

Depends on how far it is. The wall box to wall box is 100m with the
cable to each PC about 5m max normally. Saying that the 100m is a max
and I have seen cables from the wall to PC at 30m work fine and others
at 10m cause issues.


Going to skip the next bit it's too confusing......

For the UK stick to 568B color scheme, forget about 568A ( although
that's what 1 end turns out as when crossed). If you start to mix and
match you will just get confused. It's only which color pair / pin on
the connector difference the signal function to pin doesn't change.

If you buy the cables from any supplier you only need a patch at one end
and a crossover at the other.

http://www.duxcw.com/digest/Howto/network/cable/cable5.htm

Me

 

You are my hero - best hero - gonna try
=Quote=

Plug a patch cable into the wall box and run it to another socket (which

if that works.

Sorry for the odd description but i`m new to the cable business so it will
appear odd written in text.

Thanks for ur interest in my matter.


JiMi D

 

Jimi

Would I be correct reading your friend has wired your upstairs/downstairs
cable as a crossover?
I also 'read' he has terminated each end to a standard wall outlet box and
achieved the crossover by wiring one 568a & the other 568b. This is not the
usual way of doing it, though there is nothing to stop you.
If your friend has done it this way ask them to rewire it to 'straight
through'. i.e. 568a at both ends or 568b at both ends whichever takes your
fancy.
Then you only have to worry about getting a crossover patch cable for one of
the PC's. The other can use a 'straight' patch lead, which can be as long as
the standard allows (I've used 30 metre one's and I think the're available
even longer now)

Just remember to connect 2 PC's you need One crossover in the chain of
cables connecting them together. i.e. the transmit pair on one end has to
end up connected to the receive pair at the other end and vice versa.
(Transmit PC1 connects to Receive PC2 and Receive PC1 connects to Transmit
PC2)

The advantage of making interroom wiring straight through is that when you
progress to a hub/switch based network you don't have problems
uncrossovering your interroom wiring. (Yes you will progress, to a
hub/switch based system especially once you look at broadband Internet)

Hope this 'clears the waters'
Paul.

Cheers
Paul