-9-
3.2 UTP Cable
When making a connection to another device using straight-through UTP
cable, make sure MDI-X to MDI connection rule is followed. The
following figure illustrates the pin assignments of a straight-through UTP
and a crossover UTP cable :
1
1
1
RJ-45 plug
RJ-45 plug
RJ-45 plug
Straight-through UTP
Crossover UTP
RJ-45 plug
1
2
2
2
2
3
3
3
3
6
6
6
6
It is suggested to use straight-through UTP cables for all UTP
connections. The maximum length and UTP cable categories used for the
connections to a 10BASE-T device and 100BASE-TX device are :
CONNECTED DEVICE UTP CABLE USED & MAXIMUM LENGTH
10BASE-T device
Cat. 3,4,5 UTP(100meters)
100BASE-TX device
Cat. 5 UTP(100meters)
