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10 posts

Wannabe Geek


Topic # 138561 8-Jan-2014 19:07 Send private message

Hi all

I've just wired cat 6 cable all through our new house and I have terminated at wall plates under t568b wiring as opposed to "a"

It's now apparent after doing some more reading that the NZ standard is "a".

What are thee implications of this? The phone line is yet to be hooked up by telecom so I was wondering if this will have any impact on internet connections, phone connections etc?

Thanks

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  Reply # 963463 8-Jan-2014 19:16 One person supports this post Send private message

If they're wired the same at both ends it shouldn't matter, from what I can gather, but I'm no expert. http://en.wikipedia.org/wiki/TIA/EIA-568

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  Reply # 963509 8-Jan-2014 20:18 Send private message

No real difference. Just simply a different order.

We generally use 568A in NZ though. The US uses 568B mostly.

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  Reply # 963539 8-Jan-2014 21:04 Send private message

I was about to check myself which system we used in NZ (haven't started the wiring yet).
It probably doesn't matter, except you might need to make your own patch cables. I assume that all the ones you can buy in the stores are 568A.
I have a drawer full of patch cables, so I want to make sure my wiring is compatible.


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Reply # 963544 8-Jan-2014 21:09 Send private message

Actually now that I think about it, the patch cables should not matter. They are just passing the signal down the wires. It doesn't matter what colour they are.

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  Reply # 963549 8-Jan-2014 21:14 Send private message

it wont make a difference to ph. line as pin out is same for both a &b ie bl-whbl is on 4&5

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  Reply # 963597 8-Jan-2014 22:45 Send private message

Chipparooney: Hi all

I've just wired cat 6 cable all through our new house and I have terminated at wall plates under t568b wiring as opposed to "a"

It's now apparent after doing some more reading that the NZ standard is "a".

What are thee implications of this? The phone line is yet to be hooked up by telecom so I was wondering if this will have any impact on internet connections, phone connections etc?

Thanks



The implications are  - none

- The b standard is/was used to introduce a half cross over in a structured network (cross over 10/100 and half x-over 1000) and so you could use a half cross over patch cable @ the switch, have a half cross over in the fixed cableing (a on the panel & b at the jack- or the other way around) and then use a none cross over patch cable to the device - ending with a net of no crossovers
- theoreticaly this could produce a better overall balance within the network cableing system.  The theoretical difference I beleave has been proven with time - as components withing the cableing networks have been refined and improved - to be negligable.
 
With most network devices now having autosenceing it dosent mater what standard you have used (a @ both ends, b @ both ends or swopped @ either end ) your network will still work for data.

As for telephany either standard makes no differnce as pair one (Blue/White) on pins 4+5 is still pair one on both standards

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