Which cores are used in cat5

Hi kidzer, thanks for your reply. Since you bring up the whole cross-over thing I have another question! Are cross-over cables used only when you're connecting directly from 1 computer to another? I used to think it was used when connecting directly to any network device, such as a VoIP phone, but I can connect it either directly from my computer, or through a switch using the same cable.

If you are connecting through a switch or a hub, you just need straight through cables, the network device handles the TX and RX lines. HE X US. Most switches and NICs these days are auto switching so you don't need a cross over when connecting switch to switch or computer to computer. They however are handly to have arround as you can alway find on device that seems to need them. Always good to label a crossover though, I have a problem with a "cat5" kvm, the colours were wrong on it.

After we have the board replaced did we realise that the problem was infact the use of cross over As has been mentioned, cross-over cables are pretty much obsolete with any half-decent networking stuff made in the last decade or so - everything does it automatically if it's needed.

To get to Gigabit, we wanted to keep the data signalling rate the same, so the higher bandwidth required more wires. The RJ45 data cables we use to connect computers to a Ethernet switch is straight-through cables. Although CAT5 cable usually contains four pairs of copper wire, Fast Ethernet communications only utilize two pairs.

The maximum length you can run Cat5 , Cat5e, Cat6 and Cat6a cable is meters or feet. If you require a longer run , you will need to put an active component, such as a router, in-between the signals.

Under Meters The maximum connection length for Cat 5 cables without loss of transfer speed is meters, or feet. Cables at or under this length generally don't experience performance loss. Most Cat 5 cables don't extend to this length, and are instead available in varying lengths under feet.

The four wire pairs in a CAT-5 cable are distinguished by the color of their insulation. The four colors are in order blue, orange, green and brown. Thus, when refering to the "second pair" of wires , it is the orange pair. All newer broadband routers support Gigabit Ethernet along with other mainstream computer network equipment, but Gigabit Ethernet also provides backward compatibility to older Mbps and 10 Mbps legacy Ethernet devices.

No, it has 4 wires, 2 pairs. Additionally the wires in a phone cable are not twisted to prevent cross-talk. Types of Ethernet Networks Fast Ethernet. Twisted pair cable. Gigabit Ethernet. Optic fiber cable. Switch Ethernet. Multiple network devices in a LAN require network equipments such as a network switch or hub.

The standard is designated as IEEE Use of unused pairs in cat5 ethernet cables? Asked 4 years, 10 months ago. Active 4 years, 10 months ago. Viewed 48k times. Improve this question. Tolsadus He's asking about the function of the wires, not the color. Add a comment. Active Oldest Votes. As you can read on Wikipedia page about "Category 5 cable" in "Applications" section: Cat 5 is also used to carry other signals such as telephony and video But let's get back to ethernet.

The additional pairs in fast ethernet networks may also be used for PoE Power over Ethernet , as you can read here: Power over Ethernet or PoE describes any of several standardized or ad-hoc systems which pass electric power along with data on twisted pair Ethernet cabling. Improve this answer.

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