It's the difference in how a cable is wired. It's called the Pin-Out.
Ehternet uses 2 pairs of wires in a cable. 1 pair for Send the other for Recieve. On a standard RJ45 Jack, pins 1 and 2 are the Send Pair and pins 3 and 6 are the recieve...... a straight through cable is wired identically at both ends. a crossover cable switches the pairs 1 and 2 and 3 and 6...... the the wire connected to pin number 1 is connected to pin number 3 at the opposite end of the cable and the wire for pin 2 is connected to pin 6 at the other end..... it just crosses over the pairs
a crossover cable is used to connect like devices, like a router to a router, but a straight through cable is used to connect dissimilar devices, like a router to a computer.
Common Ethernet network cable are straight and crossover cable. This Ethernet network cable is made of 4 pair high performance cable that consists twisted pair conductors that used for data transmission. Both end of cable is called RJ45 connector.
Thursday, January 14, 2010
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment