[asterisk-users] Y-cords - What are they ?

[Dave Fullerton]

On 07/08/2010 10:19 AM, Zeeshan Zakaria wrote:
> That's why I specifically mentioned Cat5 networks, because giga bit networks
> which use four pairs are called Cat6 networks.
>
> This is true that Cat5 networks are also used with gigabit hardware, but
> technically it is wrong. Cat6 hardware uses different frequencies over
> copper than Cat5, and mixing and matching Cat5 and Cat6 results in not a
> true gigabit performance. And certainly there are no Y-cables in Cat6
> networks.
>
> Zeeshan A Zakaria
>
> --
> www.ilovetovoip.com
>
> On 2010-07-08 9:55 AM, "Benny Amorsen"
> <benny+usenet at amorsen.dk<benny%2Busenet at amorsen.dk>>
> wrote:
>
> Zeeshan Zakaria<zishanov at gmail.com>  writes:
>
>> making use of the fact that both Cat5 networks and B...
> For Ethernet, this is only true for 10Mbps and 100Mbps. Gigabit and up
> uses all four pairs.
>
>
> /Benny
>
>

According to wikipedia: http://en.wikipedia.org/wiki/Gigabit_Ethernet

Cat6 wiring is only a requirement of 1000BASE-TX equipment which only 
uses two pairs. 1000BASE-T, which is more common, does use all four 
pairs but can use Cat5 or higher wiring.

-Dave