- What are Ethernet Cables?
Ethernet cables connect network devices such as modems, routers, and adapters. They transmit data using the Ethernet protocol. Ethernet cables have RJ-45 jacks on both ends, each with 8 pins. (They look similar to telephone jacks, which use 4 pins or 6 pins.)
Note:
- Equipment using an Ethernet cable is referred to as wired.
- Wireless equipment uses radio waves in place of some (or all) Ethernet cables. A network device that uses both Ethernet and wireless connections is usually called just wireless.
- How to find the first pin position in RJ45 connector?
- Pin Position in RJ45 connector?
- RJ45 Pins:
- Straight-Through Ethernet Cable:
1.A straight-thru cable has identical ends.
2.A straight-thru is used as a patch cord in Ethernet connections.
3.Both the T-568A and the T-568B standard Straight-Through cables are used most often as patch cords for your Ethernet connections. If you require a cable to connect two Ethernet devices directly together without a hub or when you connect two hubs together, you will need to use a Crossover cable instead
- T-568A:
- T-568B:
- Crossover Ethernet Cable:
- Transmission in straight and cross over cable:
Points to Remember:
- A straight-thru cable has identical ends.
- A crossover cable has different ends.
- A straight-thru is used as a patch cord in Ethernet connections.
- A crossover is used to connect two Ethernet devices without a hub or for connecting two hubs.
- A crossover has one end with the Orange set of wires switched with the Green set.
- Odd numbered pins are always striped, even numbered pins are always solid colored.
- Looking at the RJ-45 with the clip facing away from you, Brown is always on the right, and pin 1 is on the left.
- No more than 1/2" of the Ethernet cable should be untwisted otherwise it will be susceptible to crosstalk.
- Do not deform, do not bend, do not stretch, do not staple, do not run parallel with power cables, and do not run Ethernet cables near noise inducing components.
