Ethernet only uses 4 cables, but the cables that are used are 1,2,3 and 6.
It needs an 8 cable connecter (RJ45)
The telephone connection (RJ11) uses 3,4,5 and 6, so won't work. You can
use a standard 4 wire telephone cable as long as you attach an ethernet,
RJ45 plug to the end of it, and wire the plug correctly.
An interesting historical note: Yale's original ethernet plan used
standard 4 wire RJ11 plugs for all the inwall jacks, using standard phone
cords for the inwall wiring, rather than CAT 5 wiring (8 wire twisted
pair) which the ethernet standard requires. I guess they did it to save
money, but if you look in many of the college clusters, the jacks are
still the standard telephone jacks, and have special proprietary Yale
cables that have RJ11 (4 wire) plugs on one end and RJ45 (8 wire) plugs on
the other end. When the rooms of the residential colleges were finally
wired they did it properly and put in RJ45 wall jacks, and I think (and
certainly hope) CAT 5 cabling.
--Tim
On Fri, 11 Jun 1999, Harald Schwefel wrote:
>
> I just tried to fit a normal telefon end-thing in my ethernet card, and it
> seemd to fit (at least for the middel 4-6 cables.
>
> Which cables does the ethernet card use? are they in this region? Since as
> I learned yesterday one only needs 4 cable for ethernet networking.
>
> Thanks
>
> harald
>