[asterisk-users] POE Splitters

[Hans Witvliet]

On Thu, 2010-07-22 at 17:41 -0500, Karl Fife wrote:

> >> enough amps to power the full load at the end.
> >>
> 
> You could do someting with passive POE--in other words not 802.2af POE, but 
> rather the 'dumb' kind of POE which just injects power on the unused pairs. 
> Passive POE (being passive) does not have a hard wattage limit per drop 
> limitation imposed by 802.2af.  On the far end, you could split out the 
> power to run a 4-port 802.11af POE switch.
> 
> Passive POE would preclude GigE, but at least you wouldn't have to add 
> ethernet drops.  In theory you could preserve GigE by looking for a IEEE 
> 802.3at [sic] switch.  IEEE 802.3at allows 36 watts per port, but good luck 
> finding (or affording) a 802.3at-powered 3-port 802.2af POE switch even if 
> all 3 downstream devices don't draw the maximum wattage simultaneously :-)
> 
afaicr there are not a lot of hard phones doing 1Gb,

And POE-switches that can do 1Gb resembles a jumbo-jet compares to other
planes; Both in price an amount of noise...