[Asterisk-Users] Cheap PoE switches/injectors?

[Greg Hill]

On Mon, 19 Jul 2004, Kevin P. Fleming wrote:

> Scott Laird wrote:
>
> > So $1600 for 24 ports.  That's not *too* bad.  HP seems to have a
> > similar model (2626-PWR) for a similar price.  3com also seems to have a
> > 24-port injector for $800.
>
> I still don't understand why I can buy single-port injectors for $20,
> but multi-port models are $30 per port and up. You'd think that having a
> single combined power supply and other bits would reduce the cost, not
> increase it.


officially, a POE capable switch/etc is supposed to do a discovery routine
to detect, when a device is plugged into it, whether that device requires
POE. Right? And the single-port POE injectors are usually nothing more
than two RJ45 packs with a dc power connector, right? That could be the
difference in price there: the detection circuitry. Or am I way off?

Greg