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Crossover Cables
What is the significance in TX+ and TX- as well as RX+ and RX-?
Can one create an Ethernet crossover cable by using the following pin-out?
12345678
63245178
instead of the TIA/EIA standard:
12345678
36145278
Also, can one make a T1 crossover by using the following pin-out?
12345678
54321678
instead of the standard:
12345678
45312678
I only ask because a technician in CO wired a T1 crossover for the implementation of an inline ASE, with the TX and RX pairs crossed. I was wondering if this will cause any problems in the future, it seems to be working fine now. I am a few hundred miles away, or I would go swap it out myself.
His work log states that he created a cable with the following pin out:
w/gr -- gr -- w/o -- bl -- w/bl -- o -- w/br -- br
w/bl -- bl --w/o -- gr -- w/gr -- o -- w/br -- br
Can one create an Ethernet crossover cable by using the following pin-out?
12345678
63245178
instead of the TIA/EIA standard:
12345678
36145278
Also, can one make a T1 crossover by using the following pin-out?
12345678
54321678
instead of the standard:
12345678
45312678
I only ask because a technician in CO wired a T1 crossover for the implementation of an inline ASE, with the TX and RX pairs crossed. I was wondering if this will cause any problems in the future, it seems to be working fine now. I am a few hundred miles away, or I would go swap it out myself.
His work log states that he created a cable with the following pin out:
w/gr -- gr -- w/o -- bl -- w/bl -- o -- w/br -- br
w/bl -- bl --w/o -- gr -- w/gr -- o -- w/br -- br
Comments
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OptionsPriston Member Posts: 999 ■■■■□□□□□□I don't understand why technicians wire stuff the wrong way -.- So annoying when the 66 block is backwards.
I got a feeling your routers and switchs auto-detected what pairs are what.A.A.S. in Networking Technologies
A+, Network+, CCNA -
OptionsMonkerz Member Posts: 842I got a feeling your routers and switchs auto-detected what pairs are what.
I was in hopes that was the case, but I see now the SEFS are counting up slowly. I am going to overnight the branch a correct T1 crossover.