2017年1月12日 · There are two types of pinouts for terminating twisted pair cable with a 8P8C (RJ45) connector: But why must one not simply align the wires serially, e.g: Green pair - Orange pair - Blue pair - B...

2015年1月23日 · I found claims in a thread that T568A has advantages over T568B due to the fact that each twisted-pair in a cat5/cat6 varies slightly in the tightness of the winding. That would imply that, while nominal, selection of twisted-pairs for TX/RX does have a physical impact.

2016年12月9日 · A little history. The choice of two pinouts has probably caused more confusion then anything else in the EIA/TIA 568 structured wiring spec. As pb2k posted the reason T568A is preferred is because ...

2015年10月13日 · I chose T568A because: It's specified for residential installations according to ANSI/TIA-570-C for residential structired wiring. I'm also running new phone Cat5e for some phone lines and using T568A there, and I want to be consistent during the installation for simplicity and to be able to repurpose cables if I chose to later.

My question for the experts is.. The two PCs can only ping successfully when I use a regular Ethernet cable (straight-thru, i believe its known as T568A). I have always thought this PC to PC Ethernet link will require a T568B crossover cable instead. This puzzled me.

2016年9月18日 · The wire in between the two devices has two termination points (two ends), and those ends have 8 wires, grouped into 4 pairs, and are placed in an order that is governed by T568a or T568b -- hopefully to properly introduce a crossing of the pairs on the wire (crossover cable) or to ensure there is no crossing of the pairs on the wire (straight ...

2018年12月19日 · You must use a TIA/EIA wiring standard, either TIA/EIA T568A (normally used for home networking) or TIA/EIA T568B (usually used in business networking). Either wiring standard will work, but you probably want the cable wired straight-through. You may need a crossover (one side T568A and the other T568B) under certain circumstances.

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2002年7月22日 · FAQ: (UTP Cat 5 Wiring): What are 66 and 110 blocks? DSL

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