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Edg1
Gold Contributor VII Gold Contributor VII
Gold Contributor VII
Posts: 1,956
Registered: ‎06-24-2018

Re: Why is the FIOS Ethernet Wall Jack Wired Different?

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There are crossover cable configurations both 10/100 BASE-T and 1000 BASE-T. The 10/100 BASE-T uses only two pair so the set up is as follows...

1 o/w   > gr/w 1

2 o       > g      2

3 gr/w > o/w  3

6 gr     > o       6

 

The 1000 BASE-T uses all four pairs as follows...

1 o/w   > gr/w 1

2 o       > g      2

3 gr/w > o/w  3

4 bl      > br/w 4

5 bl/w > br      5

6 gr     > o       6

7 br/w > bl      7

8 br     > bl/w  8

 

Now all newer devices these day are Auto MDI-X so whether you use a crossover or straight-through cable the device will detect whether to use MDI or MDI-X. I’m not sure if the G1100 or the ONT is Auto MDI-X or not. What is comes down to is there is really no reason not to wire both end as T568B. This way there will be no issues.  

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