V2EX t568b

T568B

释义 Definition

T568B 是一种以太网双绞线(常见为 RJ45 网线)端接标准,规定了 8 根线芯在水晶头/信息模块上的颜色顺序与引脚对应(pinout)。它常用于以太网布线与跳线制作(与 T568A 并列,二者功能等价,差别在于绿/橙线对的交换)。

发音 Pronunciation (IPA)

/ti fav sks et bi/

例句 Examples

I wired the cable using T568B.
我按 T568B 标准给网线压了水晶头。

To avoid connectivity issues, the technician verified that both ends of the patch cable followed the T568B pinout and that the pairs were not split.
为避免连接问题,技术员确认跳线两端都遵循 T568B 引脚顺序,并且线对没有被拆分错配。

词源 Etymology

T568B 来自美国通信行业布线标准 ANSI/TIA-568(“568” 是标准编号;“A/B” 是该标准中两种端接方案的标记)。在实际工程中,T568B 因历史与行业习惯在某些地区更常见,但关键是两端保持一致(直通线)或按需求一端 A 一端 B(传统交叉线场景)。

相关词 Related Words

文献与作品 Notable Works

  • ANSI/TIA-568(结构化布线标准文件;T568A/T568B 的来源与权威定义)
  • **BICSI Telecommunications Distribution Methods Manual (TDMM)**(综合布线与端接规范常引用 T568B)
  • CompTIA Network+ Study Guide(网络基础与布线章节常出现 T568B 端接/线序内容)
  • Network+ Guide to Networks(教学用网络教材,网线制作与 RJ45 端接部分常提及 T568B)
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