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Posted by DLR on March 9, 2006, 5:01 pm
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Stephen Sprunk wrote:
>> Hi everyone,
>>
>> Can some people chime in as to whether or not patch cables are the same
>> as crossover cables? Are they or are they not the same? If you do not
>> already know the answer I would prefer you not respond. Please do not
>> look on Google to get your answer. :)
>>
>> I recently bought three crossover cables from ComputerCableStore.com.
>> When the cables arrived I found they were actually patch cables, not
>> crossover cables. When I e-mailed the customer service person about the
>> problem she insisted that "patch" is just another term for "crossover".
>> In other words, ComputerCableStore.com is claiming there is no
>> difference between patch and crossover cables.
>>
>> I'm not an Ethernet expert but I'm pretty sure (about 99.9%) that
>> crossovers are different from patch. Is it true or is the customer
>> service person from ComputerCableStore.com correct?
>
> Crossover cables have pins 1&2 swapped with pins 3&6. Patch cables have
> no swaps. When you look at the plastic connector on each end (pins up),
> you should be able to tell which you have based on the colors inside.
>
I've always thought of cross over cables as a subset of patch cables. A
patch cable in it's most generic meaning is a cable used to "patch" a
circuit between 2 jacks. Within that generic meaning I think of regular
vs crossover. And most folks call patch and "regular" the same. But a
crossover is a specialized case. Now days most folks don't even realize
the need for crossover cables as most hubs, switches, NICs, etc., auto
recognize the signals.
But to answer your question, a "patch" cable isn't always a crossover
cable. The seller is wrong.
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