T568A and T568B are the two color codes used for wiring eight-position RJ45 modular plugs. Straight-through cable is a type of CAT5 which the RJ-45 connectors at each end have the same pin out. (color code use on both ends are the same). Crossover cable is used to connect two computers together without using a switch or hub in between. What is the difference between T568A & T568B? Straight-through cable is a type of CAT5 which the RJ-45 connectors at each end have the same pin out. (color code use on both ends are the same). A Crossover cable is a type of CAT where one end is T568A configuration and the other as T568B configuration. Pin 1 is crossed with Pin 3 and Pin.
Here a ethernet RJ45 Straight cable Wiring Diagram witch color code category 5,6,7 a Straight Through Cables are one of the most common type of patch cables used in network world these days. These cables are used to connect different devices over a network, for instance you have to use Straight Cable if you are connecting
PC to HUB/Switch
Switch to Router
ANDROID APP >>> RJ45 COLOR CODE
These Straight Through Cables can be made using UTP (unshielded twisted pair) cables. These UTP cables ends are usually terminated at RJ45 (registered jack 45) connector. UTP cables comes with eight wires small wires, which are twisted in four pairs. Each pair has different color scheme. Only two pairs are used in 10/100 Mbps networks, while in gigabit all four pairs are used. To understand Straight Through Cable working it's important to understand the color coding scheme of wires that is used. Straight Wiring Diagram Standards : EIA/TIA T568A & T568B : EIA/TIA 568A & 568B are two straight cable color coding standards. Following is detail of these standards T568A Wiring diagram : This color coding standard was introduced in mid of 1980's, it's not widely used these days. Below is straight through wiring diagram of 568A color coding.
Following table illustrates which pin is sending and which is receiving data. Pin No Wire Color Transmitting/Receiving 1 White/Green Transmitting 2 Green Transmitting 3 White/Orange Receiving
4 Blue - 5 White/Blue - 6 Orange Receiving 7 White/Brown - 8 Brown -
T568B wiring diagram 568B is most widely used color coding standard these days and is used by cable manufacturers world wide. All of Straight through cable these days are following 568B color coding. Below is straight through wiring diagram of 568A
The color coding used in 568B is as follows Pin No Wire Color Transmitting/Receiving 1 White/Orange Transmitting 2 Orange Transmitting 3 White/Green Receiving 4 Blue - 5 White/Blue - 6 Green Receiving 7 White/Brown - 8 Brown - An important point to consider is that pin 1 & 2 are transmitting while 3 & 6 are receiving at both ends. You may say Pin 1 and 2 at both ends is sending, but that's not the case. Consider we have connected a PC with a Hub, Pin 1 at PC will be Sending data while Pin 1 at switch will transform itself into receiving Bit. Same is followed by remaining three pins. Difference between 568A and 568B There is slight difference between 568A and 568B , only orange and green pairs are swapped rest of two pairs are same in both combination. Structured Cabling is an important part of your network to work smoothly. An important concept to remember is, whether you make 568A or 568B make sure both ends of have same combination, which means if you are making 568A make sure both ends of your cable terminating at RJ45 are using 568A color coding and same is true when you make 568B. In other words 568A will only work with 568A not with 568B and vice versa. Auto-MDIX With Auto-MDIX (automatic medium-dependent interface crossover) devices can automatically detect which cable connection (straight or crossover cable ) is required and switch over to it automatically.
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There are 2 commonly used standards for wiring Ethernet cables.
They are 568A and 568B and it’s up to system administrator which one you want to use although 568B is more common. And as a computer science student you should ask a system admin on which standard type he use before starting to cable because they are different in color arrangement. BOTH 568A and 568B can be constucted in crossover and straight-through cable. Their difference only appear on color code standards. so lets see one by one:
T-568A Straight-Through Ethernet Cable
The 568A standard color are arranged as white-green, green ,white-orange, blue, white -blue, orange, white-brown, brown.
T-568B Straight-Through Ethernet Cable
The 568A standard color are arranged as white-orange, orange ,white-green, blue, white -blue, green, white-brown, brown. NOTE The only difference between 568A and 568B is that 568A start with white-green, green WHILE 568B start with white-orange orange.
RJ-45 Crossover Ethernet Cable
A good way of remembering how to wire a Crossover Ethernet cable is to wire one end using the T-568A standard and the other end using the T-568B standard. Another way of remembering the color coding is to simply switch the Green set of wires in place with the Orange set of wires. Specifically, switch the solid Green (G) with the solid Orange, and switch the green/white with the orange/white. THINGS TO NOTE ON Ethernet Cable : 1.A straight-thru cable has identical ends. 2.A crossover cable has different ends. 3.A straight-thru is used as a patch cord in Ethernet connections. 4.A crossover is used to connect two Ethernet devices without a hub or for connecting two hubs. 5.A crossover has one end with the Orange set of wires switched with the Green set. 6.Odd numbered pins are always striped, even numbered pins are always solid colored. 7.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. 8.No more than 1/2' of the Ethernet cable should be untwisted otherwise it will be susceptible to crosstalk. 9.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.