Straight-Through Wired Cables
Crossover Wired Cables
Crossover wired cables (commonly called crossover cables) are very much like Straight-Through cables with the exception that TX and RX lines are crossed (they are at oposite positions on either end of the cable. Using the 568-B standard as an example below you will see that Pin 1 on connector A goes to Pin 3 on connector B. Pin 2 on connector A goes to Pin 6 on connector B ect. Crossover cables are most commonly used to connect two hosts directly. Examples would be connecting a computer directly to another computer, connecting a switch directly to another switch, or connecting a router to a router.Note: While in the past when connecting two host devices directly a crossover cable was required. Now days most devices have auto sensing technology that detects the cable and device and crosses pairs when needed.
Rollover Wired Cables
Straight-Through refers to cables that have the pin assignments
on each end of the cable. In other words Pin 1 connector A goes
to Pin 1 on connector B, Pin 2 to Pin 2 ect. Straight-Through
wired cables are most commonly used to connect a host to client.
When we talk about cat5e patch cables, the Straight-Through
wired cat5e patch cable is used to
connect computers, printers and other network client devices to the router switch or hub (the host device in this instance).
connect computers, printers and other network client devices to the router switch or hub (the host device in this instance).
- Connector A
- Pin 1
- Pin 2
- Pin 3
- Pin 4
- Pin 5
- Pin 6
- Pin 7
- Pin 8
- Connector B
- Pin 1
- Pin 2
- Pin 3
- Pin 4
- Pin 5
- Pin 6
- Pin 7
- Pin 8
Crossover Wired Cables
Crossover wired cables (commonly called crossover cables) are very much like Straight-Through cables with the exception that TX and RX lines are crossed (they are at oposite positions on either end of the cable. Using the 568-B standard as an example below you will see that Pin 1 on connector A goes to Pin 3 on connector B. Pin 2 on connector A goes to Pin 6 on connector B ect. Crossover cables are most commonly used to connect two hosts directly. Examples would be connecting a computer directly to another computer, connecting a switch directly to another switch, or connecting a router to a router.Note: While in the past when connecting two host devices directly a crossover cable was required. Now days most devices have auto sensing technology that detects the cable and device and crosses pairs when needed.
- Connector A
- Pin 1
- Pin 2
- Pin 3
- Pin 4
- Pin 5
- Pin 6
- Pin 7
- Pin 8
- Connector B
- Pin 3
- Pin 6
- Pin 1
- Pin 7
- Pin 8
- Pin 2
- Pin 4
- Pin 5
Rollover Wired Cables
Rollover wired
cables most commonly called rollover cables, have opposite
Pin assignments on each end of the cable or in other words
it is "rolled over". Pin 1 of connector A would be connected
to Pin 8 of connector B. Pin 2 of connector A would be connected
to Pin 7 of connector B and so on. Rollover cables, sometimes
referred to as Yost cables are most commonly used to connect
to a devices console port to make programming changes to
the device. Unlike crossover and straight-wired cables,
rollover cables are not intended to carry data but instead
create an interface with the device.
- Connector A
- Pin 1
- Pin 2
- Pin 3
- Pin 4
- Pin 5
- Pin 6
- Pin 7
- Pin 8
- Connector B
- Pin 8
- Pin 7
- Pin 6
- Pin 5
- Pin 4
- Pin 3
- Pin 2
- Pin 1
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