sierrapeac
MIS
Does anyone know if the wires on a cat 5 cables need to be in a certain order? I crimped a cat 5 cable on both ends but for some reason it is not working. Any help would be appreciated. Thanks
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crimping cables??
- Thread starter sierrapeac
- Start date
- Status
Yes, they do need to be in a certain order. See
jeffbouldin
Technical User
Pin 1=White/Orange
Pin 2=Orange
Pin 3=White/Green
Pin 4=White/Blue
Pin 5=Blue
Pin 6=Green
Pin 7=White/Brown
Pin 8=Brown
Hold your RJ-45 with the tab down, pin 1 is on your left.
If you are trying to make a crossover cable follow the above on one end and on the other end;
Pin 1=White/Green
Pin 2=Green
Pin 3=White/Orange
Pin 4=White/Blue
Pin 5=Blue
Pin 6=Orange
Pin 7=White/Brown
Pin 8=Brown
Pin 2=Orange
Pin 3=White/Green
Pin 4=White/Blue
Pin 5=Blue
Pin 6=Green
Pin 7=White/Brown
Pin 8=Brown
Hold your RJ-45 with the tab down, pin 1 is on your left.
If you are trying to make a crossover cable follow the above on one end and on the other end;
Pin 1=White/Green
Pin 2=Green
Pin 3=White/Orange
Pin 4=White/Blue
Pin 5=Blue
Pin 6=Orange
Pin 7=White/Brown
Pin 8=Brown
jeffbouldin is correct. This is the standard color scheme used for making CAT5 cables. You could use your own scheme, but just make sure that both ends of the cable are wired the same i.e. pin 1 - pin 1, pin 2 - pin 2, etc...
Brian
USAF
Network +, Win2k Pro
No try not. Do or do not. --Yoda
![[yoda]](/data/assets/smilies/yoda.gif "[yoda] [yoda]")
Brian
USAF
Network +, Win2k Pro
No try not. Do or do not. --Yoda
jimbopalmer
Programmer
Brian it is also important that wires 1 and 2 be a pair and 3 and 6 be a pair, the pairs are important!
I tried to remain child-like, all I acheived was childish.
I tried to remain child-like, all I acheived was childish.
daronwilson
Vendor
568B
Pin 1 - white/orange
Pin 2 - orange/white
Pin 3 - white/green
Pin 4 - blue/white
Pin 5 - white/blue
Pin 6 - green/white
Pin 7 - white/brown
Pin 8 - brown/white
568A
Pin 1 - white/green
Pin 2 - green/white
Pin 3 - white/orange
Pin 4 - blue/white
Pin 5 - white/blue
Pin 6 - orange/white
Pin 7 - white/brown
Pin 8 - brown/white
I make a quick glance before crimping to confirm that I have white/color/white/color/white/color/white/color as I look down the row. If something rolled with the wire next to it, it is easily spotted as two whites together or two solid colors together.
Keep in mind that you should be using stranded wire for patch cables, and if you are you need to make sure the modular plug is designed for stranded wire. If it is a permanent installation, you should be using solid wire and it should terminate on a faceplate and/or patch panel.
Good Luck!
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com
babloosharma
IS-IT--Management
Could anyone tell me why we use 568A or 568B standard for crimping. when our network works with using any our own standard. are these 568a or 568b standards..inprove the network performance by any chance. ... pls help me ... i have to reply this to my boss.....
regards,
ranjeet sharma
regards,
ranjeet sharma
daronwilson
Vendor
In a nutshell, the ethernet transmits on a pair of wires and recieves on another pair. These pairs are twisted together to keep the signal on that pair and prevent it from interfering with other pairs.
It is important to proper ethernet function to keep this set up.
Good Luck!
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com
It is important to proper ethernet function to keep this set up.
Good Luck!
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com
AvayaNovice
Vendor
10 base T would probably not propose any problems if you split pairs and used your own color scheme.
100 base T on the other hand (and gig E over copper) would barf if your pairs were split. Still might work... but I can't say that it would work well.
Twisted pair applications started coming out back in the day to eliminate cross talk and intereference in telephone cable. A friend of mine was once telling me that he had a direct buried cable for a good distance from MPOE to a customer's house because they didn't want to pay PB/SBC to extend their service to the house. Whomever did the initial wiring use untwisted pair cable, no big deal -- very standard. For some reason, HUGE amounts of cross talk and interference. They replaced that cable with twited pair cable, and it eliminated it. Now obviously that's a different application, but it proves the basic point that the tip and ring being wrapped around one another phases out any interference from other pairs.
So to make a long story short: do it however you want, but if you want to be standards compliant (wink wink DW), and if you want your cabling to consistantly work... do it the correct way.
And at this point I will reaffirm my opinion (and get slightly off topic) in saying that if at all possible, never crimp your own ends. Terminate to a jack, buy a premanufactured patch cord, and use that.
Off topic ends... now.
Good luck.
100 base T on the other hand (and gig E over copper) would barf if your pairs were split. Still might work... but I can't say that it would work well.
Twisted pair applications started coming out back in the day to eliminate cross talk and intereference in telephone cable. A friend of mine was once telling me that he had a direct buried cable for a good distance from MPOE to a customer's house because they didn't want to pay PB/SBC to extend their service to the house. Whomever did the initial wiring use untwisted pair cable, no big deal -- very standard. For some reason, HUGE amounts of cross talk and interference. They replaced that cable with twited pair cable, and it eliminated it. Now obviously that's a different application, but it proves the basic point that the tip and ring being wrapped around one another phases out any interference from other pairs.
So to make a long story short: do it however you want, but if you want to be standards compliant (wink wink DW), and if you want your cabling to consistantly work... do it the correct way.
And at this point I will reaffirm my opinion (and get slightly off topic) in saying that if at all possible, never crimp your own ends. Terminate to a jack, buy a premanufactured patch cord, and use that.
Off topic ends... now.
Good luck.
daronwilson
Vendor
Oh the standards...I know I say that quite a bit, but when people come here and ask us 'professionals' for advice, I feel obligated to tell them how to do it to current standards and codes, and possibly how to squeak by without doing it 'right' if they have to.
Why not terminate it correctly? I can't think of any reason that you would deliberately terminate it wrong. What happens when you do experience a slow down on the network or a problem? I would MUCH rather be able to say "ahh, cabling and jacks test 100% and are definately not the issue" than "Huh, it could be the cabling, I terminated it all on my own style". Worse yet, what if it IS the cable termination that is the problem, then you have to explain that and fix it all, just not worth it.
If you are going to crimp plugs on cables, be sure you use the right plugs for the right cable, solid for solid, stranded for stranded.
Good Luck!
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com
Why not terminate it correctly? I can't think of any reason that you would deliberately terminate it wrong. What happens when you do experience a slow down on the network or a problem? I would MUCH rather be able to say "ahh, cabling and jacks test 100% and are definately not the issue" than "Huh, it could be the cabling, I terminated it all on my own style". Worse yet, what if it IS the cable termination that is the problem, then you have to explain that and fix it all, just not worth it.
If you are going to crimp plugs on cables, be sure you use the right plugs for the right cable, solid for solid, stranded for stranded.
Good Luck!
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com
AvayaNovice
Vendor
Yeah... but learning comes from screwing up my friend 
That's why I like to say... yes your way will work. If it comes back to bite you in the ass, you'll learn the right methods.
I agree that standards have their place. Who knows. Standards are also used to shoot for the future. And... who REALLY knows the future? I'd place my bets that standards are going to be a lot better thought out for the future than Joe B Stupid telephone installer.
So yeah, I agree.
See my new post on fiber -- I want to hear some standards
That's why I like to say... yes your way will work. If it comes back to bite you in the ass, you'll learn the right methods.I agree that standards have their place. Who knows. Standards are also used to shoot for the future. And... who REALLY knows the future? I'd place my bets that standards are going to be a lot better thought out for the future than Joe B Stupid telephone installer.
So yeah, I agree.
See my new post on fiber -- I want to hear some standards
daronwilson
Vendor
Learning doesn't have to come from screwing up. I've actually screwed up plenty, and learned from it plenty. But...I've also saved a lot by learning from someone who has already screwed up, then I don't have to do it. If you were hell bent on learning by screwing up, why would ya ask a question here? Just jump in and screw up!
Nah, standards are guidelines. Obviously if we had no ethernet standards, communication would be different. I suspect we are using ASCII standards in this communication, HTTP standards, IP standards, Ethernet standards, and so on. We need standards, and if you expect your system (whatever it is) to work, and be servicable, and play well with others.....standards should definately be considered.
Enjoy!
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com
Nah, standards are guidelines. Obviously if we had no ethernet standards, communication would be different. I suspect we are using ASCII standards in this communication, HTTP standards, IP standards, Ethernet standards, and so on. We need standards, and if you expect your system (whatever it is) to work, and be servicable, and play well with others.....standards should definately be considered.
Enjoy!
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com
AvayaNovice
Vendor
Well... I wasn't taking it like that in terms of standards, moreso... like adapting standards.
Fiber post!
Fiber post!
Fiber post!
Fiber post!
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