Chapter in this post:
Cable in the network, short Network cable, their assignment, this and that standard for pins and wires, the difference between Token Ring and Ethernet, what has to be considered with connectors and cabling, and much more - that will be the subject of this article. I would like to introduce you to the mentioned and related areas for network cable assignment and give you a few insights. In addition, I will give you sources for the corresponding further training. Because to really list all the comprehensive details here would go beyond the scope ... and only the worst nerds among you would read the article in full;)
Perhaps you have come across the names EIA / TIA-568A, EIA / TIA-568B and 258A. The last two mean the same standard of cables for Ethernet with RJ45 plugs. However, the color assignment for the individual wires or wire pairs is regulated differently. In the following I want to show you very brief details about the standards and then the individual color combinations in a table.
And here is the corresponding table (briefly noted: the colors are different; how the individual cables, pins and wires are used depends on the connected elements):
|Pin||Color (568A)||Color (568B)|
|1||White / green||White / orange|
|2||Green white||Orange / white|
|3||White / orange||White / green|
|4||Blue White||Blue White|
|5||White blue||White blue|
|6||Orange / white||Green white|
|7||White Brown||White Brown|
|8||Brown / white||Brown / white|
Here I have picked out two graphics for you, which show the network cable assignment and the allocation of the individual pins for the two standards. The source is SearchNetworking.de; you can find the exact link below:
Now we already know how colorful the network cables are on the inside and why there are two standards. To use a cable, you also need plugs and corresponding sockets. The communication between the two parts is realized through contacts - a contact is called a pin. The network connector RJ45 has 8 pins, as shown in the table.
The pin assignment is different, depending on the networking technology (Token Ring or Ethernet), use as a telephone, ISDN, DSL, Ethernet or other transmission option. Here is a small table with individual assignments. The source is at the end of the article:
|Pin||Analog telephone (internat.)||Analog telephone (Siemens)||Analog telephone (Telekom)||DSL |
|Token ring||Ethernet||Gigabit Ethernet|
|1||TX +||D1 +|
|3||E||W||b||RX +||RX +||D2 +|
Legend: a and b = A and B wires; E = ground; W = alarm clock; RX = Receiver Exchange; TX = transmitter exchange; + and - indicate the direction
In addition to color pairs, pin assignments and the like, the terms Token Ring (TR) and Ethernet have come up several times. Regardless of the cable in the network, there are two networking techniques, of which TR is the older. Ethernet has largely replaced them with regard to LAN connections, i.e. networks via cable. Here are a few brief pieces of information:
Do you have any questions or do you want to know more about networks, network cables, pins, color pairs, plugs, sheathing and Co.? Then leave a comment or your question under this post!
After graduating from high school, Johannes completed an apprenticeship as a business assistant specializing in foreign languages. But then he decided to research and write, which resulted in his independence. For several years he has been working for Sir Apfelot, among others. His articles include product introductions, news, manuals, video games, consoles, and more. He follows Apple keynotes live via stream.