Home » » Straight Throught Cable Color Code Wiring Diagram

Straight Throught Cable Color Code Wiring Diagram


This article shows a Straight Through or straight Cable Color Code with  Wiring Diagram , In computer networking field, Straight Through Cables are used to connect different networking devices with each other. You have to use a Straight Through Cable while connecting a

  • Router to Switch
  • PC to Switch

Majority of patch cables used in networking world these days are Straight Through Cables.
UTP (unshielded twisted pair) cables are used to make Straight Through Cables. Following is diagram of how UTP cable looks like



Both end of these UTP cables are truncated at RJ45 (Registered Jack 45) connector.
We can see from above diagram of UTP cables that there are eight small wires in it, these eight small wires are twisted in four pairs. Each pair has different color scheme. In traditional 10/100 Mbps networks only two pair of wires are used for sending and receiving, while in new gigabit standard all four pairs are used for data transmission.
To understand how these types of cables work, it's important to have sound understanding of Straight Cable Color Code.

Standards of Straight Cable color code :


There are two color coding standards for straight through cables, these are EIA/TIA 568A & 568B. These color coding standard tell which color is connected to which end. We now look at details of these wiring standards.

T568A Color coding Standard


This color coding standard is not widely used these days. Below is diagram of straight  cable color coding based on 568A  standard.

Straight through cable color code wiring diagram a


Next we illustrate sending and receiving pins in 568A color coding standard.

Pin No   Wire Color Transmitting/Receiving
1       White/Green Transmitting
2               Green Transmitting
3         White/Orange Receiving
4                 Blue -
5          White/Blue -
6              Orange Receiving
7        White/Brown -
8              Brown -

 T568B Color coding Standard


This is the most widely used color coding standard of current era. Almost all  Straight through cable these days are following T568B color coding standard. Below is straight through cable color code and  wiring diagram that is using 568B standard.

straight through cable color code wiring diagram b


Next we illustrate sending and receiving pins in 568B color coding standard

Pin No Wire Color Transmitting/Receiving      
1        White/Orange Transmitting
2             Orange Transmitting
3      White/Green Receiving
4                 Blue -
5        White/Blue -
6                Green Receiving
7     White/Brown -
8              Brown -


It's called straight through cable since all wires are connected at same pins on both sides of wires. You can see that in both figures of 568A as well as in 568B.
There is not much difference between 568A and 568B, you can see from above diagrams that only green and orange pairs are swapped, rest combination remains same.
An important point to remember is that whether you use 568A or 568B, make sure both ends of wire is following same standard. Which means if one end of wire has 568A standard, other end must also have 568A and vice versa.

Automatic Medium-Dependent Interface Crossover (Auto-MDIX)


Today's devices are getting intelligent, due to introduction of Auto-MDIX standard. With Auto-MDIX, devices can automatically adjust sending and receiving pins. So any wire can be used for connecting same or different devices.


Are You Interested in a :



19 comments:

  1. This is an awesome post. Really very informative and creative contents. This concept is a good way to enhance knowledge. I like it and help me to development very well. Thank you for this brief explanation and very nice information. Well, got good knowledge.
    WordPress website development Chennai

    ReplyDelete
  2. That’s another amazing post on your page. All the tips which you have mentioned are helpful while doing the activities. I agree with you, because of the hectic schedule it takes a lot of time in completing one blog. You can manage your time by downloading QuickBooks. You can take help from our experts on QuickBooks Payroll Support Phone Number +1 833-228-2822.
    Read More: QuickBooks Common Errors and Its Solutions

    ReplyDelete
  3. One should be professionally qualified and well trained to be able to handle risk-free wiring installation and repair in residential and industrial sectors. Therefore, I always trust the electricians from Electricianrandburg.com

    ReplyDelete
  4. Greetings, I’m Sakht. I’m a writer living in Newark, New Jersey 07108, USA. I am a fan of technology and writing.
    mcafee.com/activate
    mcafee.com/activate
    mcafee.com/activate

    ReplyDelete
  5. Interesting article, I didn't read an article on this topic so it is really new for me and I like it so thank you for writing such an informative topic.
    buy a dissertation proposal

    ReplyDelete
  6. Great Article Cloud Computing Projects

    Networking Projects

    Final Year Projects for CSE

    JavaScript Training in Chennai

    JavaScript Training in Chennai

    The Angular Training covers a wide range of topics including Components, Angular Directives, Angular Services, Pipes, security fundamentals, Routing, and Angular programmability. The new Angular TRaining will lay the foundation you need to specialise in Single Page Application developer. Angular Training

    ReplyDelete
  7. HELLO, your blog is more informational for me thanks for sharing such a type of content really it is a very helpful l and knowledge worthy content like us and we provide uttarakhand news in hindi to our curious readers.

    ReplyDelete
  8. Your article was really impressive.Do keep post like this . You can also visit my site for all kinds of Past Questions and Answers

    ReplyDelete
  9. When using statement writer you might face several problems. and if You want to fix QuickBooks Statement writer error through, then get some easily every solution step by step to fix "QuickBooks Statement Writer error".

    ReplyDelete
  10. You can check the latest news update for Jamb UTME result and N-power and school news also Visa lottery and others recruitment on bestschoolnews.com Thank you

    N-Power Recruitment

    N-Power Shortlisted
    JAMB Result
    and JAMB Mock Result Please help me thanks

    ReplyDelete
  11. How to make Yahoo my homepage on Windows 10?

    Instances occur when you search for how to make Yahoo my homepage on Windows 10. To go about it, you need to select More on the address bar, then go to Settings. Under Open with, choose A specific page or pages. Select one of the default options or select Custom to enter the URL of another page you'd like to see each time you open the browser. Choose the plus button to save.

    Also Read:-

    yahoo mail not syncing
    yahoo mail not working on iphone
    how to remove yahoo search from chrome
    pop.verizon.net not working

    ReplyDelete
  12. Delta Airways, Just amazing — they’ve never been late for me, but Delta Flight Cancellation Policy is a little bit difficult to understand. After searching so much about its policy, finally, I got a solution by {Airlinespolicy.com}. They have crisp, short, and relevant information about charges, modification, cancellation, check-in, Baggage, and Pet policy. They helped me a lot during the harsh Covid-19 time. I am very thankful to the team of airlinespolicy.

    ReplyDelete
  13. Many pessengers prefer the fastest and comfortable airline. If you are following the policy of 24-hour cancellation then you have to pay any Air Canada Ticket Cancellation Charges. If you are planning to cancel your reservation then do it in 24 hours to get a full refund.

    ReplyDelete
  14. If you don't have to pay Hawaiian Airlines Cancellation Fee then some points you have to keep in mind while purchasing the tickets. Before purchasing the tickets, check the cancellation fee charges. Check the availability of Hawaiian airline 24 hours cancellation policy. If the airline asked you to pay the fees then you are able to pay but if they don't tell you about the fees, you will not have to pay any charges.

    ReplyDelete
  15. This is an informative article, thanks for sharing easyinfoblog.com

    ReplyDelete