(Taken from http://www.duxcw.com/digest/Howto/network/cable/cable5.htm)
Let's start with simple pin-out diagrams of the two types of UTP Ethernet cables and watch how committees can make a can of worms out of them. Here are the diagrams: Note that the TX (transmitter) pins are connected to corresponding RX (receiver) pins, plus to plus and minus to minus. And that you must use a crossover cable to connect units with identical interfaces. If you use a straight-through cable, one of the two units must, in effect, perform the cross-over function. Two wire color-code standards apply: EIA/TIA 568A and EIA/TIA 568B. The codes are commonly depicted with RJ-45 jacks as follows (the view is from the front of the jacks): If we apply the 568A color code and show all eight wires, our pin-out looks like this: Note that pins 4, 5, 7, and 8 and the blue and brown pairs are not used in either standard. Quite contrary to what you may read elsewhere, these pins and wires are not used or required to implement 100BASE-TX duplexing--they are just plain wasted. However, the actual cables are not physically that simple. In the diagrams, the orange pair of wires are not adjacent. The blue pair is upside-down. The right ends match RJ-45 jacks and the left ends do not. If, for example, we invert the left side of the 568A "straight"-thru cable to match a 568A jack--put one 180° twist in the entire cable from end-to-end--and twist together and rearrange the appropriate pairs, we get the following can-of-worms: This further emphasizes, I hope, the importance of the word "twist" in making network cables which will work. You cannot use an flat-untwisted telephone cable for a network cable. Furthermore, you must use a pair of twisted wires to connect a set of transmitter pins to their corresponding receiver pins. You cannot use a wire from one pair and another wire from a different pair. Keeping the above principles in mind, we can simplify the diagram for a 568A straight-thru cable by untwisting the wires, except the 180° twist in the entire cable, and bending the ends upward. Likewise, if we exchange the green and orange pairs in the 568A diagram we will get a simplified diagram for a 568B straight-thru cable. If we cross the green and orange pairs in the 568A diagram we will arrive at a simplified diagram for a crossover cable. All three are shown below.
Hope this helps
be safe Cadishead Computers
what is use cross overcable
we used cross over cable ,coz cross over cable has two ends one end for tranmitting data and one end for receiving data ,thats why cross over used in peer to peer data connection.
Cross over cables are used to connect devices in the same group. For Ex.. Routers,PC,Printer belongs to same group. To connect a Printer and PC, We use cross over cable. Straight through cables are used to connect devices in the different group. For Ex... Switches, Hub, Bridge are in same group. To connect a PC and a Switch, We use straigh through cable since PC and switch belongs to different group.
router and cables
There are several different cables that you can use for this process. They include a cross over cable or an uplink.
In European countries and elsewhere, the cross-sectional area of electric cables and busbars are expressed in square millimetres. The larger the cross-sectional area, the greater the current-carrying capacity.
There are 3 main types: - Straight Through - Cross-over - Rollover (less common) and i guess maybe Fiber, because your question was so vague.
you can use any of the following cables: 1) Cross Over cable 2) LAN cable 3) Ethernet cable
In HVDC (High Voltage Direct Current) transmission systems, the primary types of cables used are underground cables and submarine cables. These cables are typically made from materials like cross-linked polyethylene (XLPE) or oil-filled cables, designed to withstand high voltage and environmental conditions. They are insulated to prevent electrical leakage and ensure safe transmission over long distances. Additionally, the use of bipolar cables allows for efficient transmission and improved reliability in the system.
You cannot create a cross sectional area of a rectangle. You can only create cross sectional areas for triangular shapes.
It is possible but you would need to use a cross-over cable joint and not an ordinary connection between them.
Cross over FROM where TO where?