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Out of these, CAT5 and CAT6 wires are commonly used with RJ45 connectors. The five main categories used in twisted-pair are CAT3, CAT5, CAT6, CAT7, and CAT8. What are the different categories of twisted pair cables? One side of the cable is connected in T568-B standard, while the other is connected in T568-A standard. RJ-45 Straight Cable PinoutĪs visible in the figure above, both connectors at the ends of the cable have different standards. It is generally used to connect two dissimilar devices together. When the two ends of the ethernet cable are connected using the same standard (either 568A or 568B), it is called a Straight or Patch cable. Based on this these standards, there are two types of twisted pair cable: Straight Cable(Patch) The difference between these two standards lies in the order, in which pairs are arranged inside the cable. Read also: Know the Difference- RJ9, RJ11, RJ12, RJ45, RJ48 & Pinout Types of twisted-pair cable on the basis of wiring standardsĮthernet cable can be wired using two different wiring standards, i.e., 568A and 568B. It is similar to a shielded twisted pair cable, but it has an extra layer of protection against electromagnetic interference.It is used in home and office networks.This is done to prevent electromagnetic interference and distortion of the signal. It consists of 4 pairs of color-coded wires that are twisted around each other.These twisted pair cables are available in Unshielded Twisted Pair and Shielded Twisted Pair.

The connector comes with an orientation tab that helps in proper wiring. It enables multiple connections with a single connector due to which RJ45 was initially known as modular connectors. The other two pairs, i.e., Blue and Brown are used as ISDN or phone connections.

Note: The Ethernet require only two pairs of wire, i.e., Orange and Green for internet connection. This set of cables is shielded together as twisted pairs, which are known as twisted pair cables. This standard is known as 8P8C (8-position 8-contact).