UTP is a general-purpose/universal cable that can be used for, among other things, T1 lines, Ethernet, and serial communications (read: Junos serial console cabling). Ethernet merely uses most/all of those pairs in the 4-pair (regular/poe), other technologies may not use all of the unshielded, twisted, pairs available in your standard UTP cable ...

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2017年1月12日 · UTP cables used in the 586 standard inherited their color code from the 25 pair color code developed by AT&T for cabling used in telecommunication purposes. The following table shows the combination of colors to be used for each pair. This gives us this set of combinations: UTP cabling simply used the first four combinations.

I am asking this because after doing some research I found some conflicting information. First, on Wikipedia page on Ethernet physical layer I found that the voltage on the lines is 2.5V. https://en.

2016年11月27日 · A patch cable can be either UTP copper, fiber, or something else, depending on the cable infrastructure used. For instance, a Category-6 cable cannot be used when the equipment to which you are trying to connect has fiber transceivers.

2019年3月19日 · That would not be called an ethernet cable, it is UTP cable, and it can be used for ethernet, token ring, POTS, serial, etc. Ethernet runs on a variety of media, including coax, twisted-pair, optical fiber, etc. The standard to which you refer doesn't recognize things like ethernet, only the cable specifications, which when met will allow all ...

The advantage is the ability to work on UTP copper runs of roughly 1 to 5 km. You could also use another kind of Ethernet Cable Extender, I googled one up to 100 Mbit. Ugly Russian solution: Use old 3COM switches (without MDII-MDX auto-sensing) it has a reputation of high sensitive/high power device.

2018年12月19日 · Hmm strange. Confused, I have here a cable labeled (printed on the cable) as A/TIA -568-B 2 UTP CAT5E and has 4 wires. From left to right (looking at top of the connections with the head of the cable, the connector pins on top pointed to yourself): PIN1:NC, PIN2:NC, PIN3:RED, PIN4:NC, PIN5:NC, PIN6:ORANGE, PIN7:BLUE and PIN8:WHITE.

2018年12月21日 · Somebody needs to read the IEEE specification on Ethernet cables. When you run Cat 5/6 UTP the minimum is 3' (90 cm). You cannot (should not) use cables shorter than 3' (90 cm). One cable between a router and a patch panel won't likely exhibit a problem, but multiple will. The specification is clear.

2018年3月21日 · It's the same thing as the Jacket color (In UTP structured cabling. Fiber jacket color actually means something). Even if the cables are Blue, Red, White or Black, they're still an Ethernet Cable (barring rolled-over or crossed-over ones), meaning you can use whichever colors you like, but it's still a good idea to be able to see their function ...