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2006 Apr 24
1
Re: Shielding of T1/E1 cables WAS RE: PinoutsforT1/E1 crossover
> Close. 10/100mbps Ethernet uses wires 1,2,3,6 but that is pair 2 & 3.
> Pair
> one is the pair up the dead center (pins 4&5), pair 2 is pins 1&2,
pair 3
> is
> 3&6 and pair 4 is 7&8. A T1 uses pairs 1&2, which is why you can't
use a
> regular crossover cable for a T1 crossover, but you can use a regular
> ethernet patch cable as a T1 patch