|
|
|
Custom Installers' Lounge Forum - View Post
|
|
|
|
|
|
|
The following page was printed from RemoteCentral.com:
If Green/Green-White Pair Missing in...
| |
|
Topic: | If Green/Green-White Pair Missing in T568A RJ45, Should T100 Work? This thread has 4 replies. Displaying all posts. |
|
Post 1 made on Thursday September 8, 2016 at 23:33 |
Mogul Senior Member |
Joined: Posts: | May 2010 1,164 |
|
|
Attempted to repurpose some daisy-chained CAT5 pulled for phone lines in mid-1990's for use as a T100 data link. Somewhere along one of the runs, Pins 1 and 2 (GW and G) are broken/missing/damaged. Assuming all other conductors are ok, should this cable work for T100 link? Can an anyone explain in more detail how each pair is utilized in a T10 vs. T100 vs. T1000? TIA
Last edited by Mogul on September 9, 2016 01:29.
|
"Whatever is rightly done, however humble, is noble." [Sir Henry Royce] |
|
Post 2 made on Friday September 9, 2016 at 00:12 |
iimig Senior Member |
Joined: Posts: | April 2011 1,154 |
|
|
I'm assuming you mean 10BaseT, 100BaseT and 1000BaseT.
Pins 1,2,3, and 6 are all used on 10/100 networks. Pins 1-8 are used on Gigabit or 1000BaseT. No matter if the termination is TIA-568A or B, the green pair is going to be used on pins 1 and 2, or 3 and 6. For this reason, if the green pair is truly damaged, you will need to move them into a position that isn't used such as where the brown or blue pair would normally go. Whatever pair you swap it with will go back where the green pair goes.
Here is an example that should work:
1 - Blue Stripe 2 - Blue 3 - Orange Stripe 4 - Green 5 - Green Stripe 6 - Orange 7 - Brown Stripe 8 - Brown
|
The less I say, the smarter I will appear |
|
OP | Post 3 made on Friday September 9, 2016 at 01:28 |
Mogul Senior Member |
Joined: Posts: | May 2010 1,164 |
|
|
Very helpful--Many thanks.
|
"Whatever is rightly done, however humble, is noble." [Sir Henry Royce] |
|
Post 4 made on Friday September 9, 2016 at 01:55 |
Ernie Gilman Yes, That Ernie! |
Joined: Posts: | December 2001 30,104 |
|
|
There is absolutely nothing sacred about the colors of the wires, just keeping them in pairs and respecting polarity.
|
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw |
|
Post 5 made on Friday September 9, 2016 at 02:43 |
King of typos Loyal Member |
Joined: Posts: | June 2002 5,275 |
|
|
Obviously this modification has to be done at both ends of the cable. It would also be nice to attache a note to both ends for future techs. I've learn from personal experience from this.
Having to redo 30 to 40 cables one night at work and not knowing one of them had specially wiring really pissed me off. Couldn't tell you how many times I redid and redid that one cable. 1,000 foot run and really not knowing where on the casino floor it went because the floor lay out changed dozen of times over the years.
KOT
|
|
|
Before you can reply to a message... |
You must first register for a Remote Central user account - it's fast and free! Or, if you already have an account, please login now. |
Please read the following: Unsolicited commercial advertisements are absolutely not permitted on this forum. Other private buy & sell messages should be posted to our Marketplace. For information on how to advertise your service or product click here. Remote Central reserves the right to remove or modify any post that is deemed inappropriate.
|
|
|
|