RE: Cat 5 Pinouts

["BUTLER, Tony, FM" <tony.butler@xxxxxxx>]

Safety from BT is easy because you can only ever physically use a max of 6
wires, though only 2/3 are actually needed.  Safety from blowing up your
hub
is more problematic as I think all 8 are wired, though only 4 used.
Besides, when you get Keiths Krazy Kat5 modules, switch etc (as u
inevitably
will) then all 8 lines will DEFINITELY be used, so the short answer is:
Don't mix them up! :)

Tony

> -----Original Message-----
> From: Robert Chasmer [mailto:robert.chasmer@xxxxxxx]
> Sent: 14 February 2002 16:17
> To: 'ukha_d@xxxxxxx'
> Subject: [ukha_d] Cat 5 Pinouts
>
>
> Could anyone recommend a safe RJ45 pinout to use for distributing 12v.
> Basically I want to connect Nigel's IR circuit up via my
> patch pannel, which
> means I need 3 wires:-
> 1) +12v
> 2) 0v
> 3) Signal
>
> I want to avoid any problems if I accidently patched the IR
> box to either my
> Hub or Telephone points.
>
> I've found a number of guides describing what is used for a
> network and even
> a BT patch:-
> * http://www.cpe.surrey.ac.uk/support/utp.htm
>
> * http://www.rogerssystems.com/store/tech/how-to-cat5.cfm
>
> *
> http://www.bluemax.net/techtips/networking/Wiring_Tips/Wiring1
> 00TX/colorcode
> standards.htm
>
> Based on these I think the following pins are used (please correct me)
> (1) Network(Tx+)
> (2) Network(Tx-)
> (3) Network(Rx+)
> (4) BT(Line-A)
> (5) BT(Line-B)
> (6) Network(Rx-), BT(Bell)
> (7)
> (8)
>
> This leaves me to believe I could use pins 7 & 8 safely, but
> I need one
> more.  I wired up my patch pannel for the phone about a year
> ago, so I can't
> remember what pins I used but I'll check when I get home.
>
> Any ideas?
>
> Also I want to buy some RJ45 / Cat 5 sockets to fit neatly in
> some small
> boxes I'm put the IR boards in.   Anyone know if maplins sell
> small Cat 5
> sockets that I could mount in a small box.
>
>
> Rob
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