[Asterisk-Users] Cheap PoE switches/injectors?

[asteriskstuff at ziplip.com]

You're spot on!!

802.3af has all kinds of protection circuitary built in.

P

> -----Original Message-----
> From: Greg Hill [mailto:gregh-asterisk at hillnet.us]
> Sent: Monday, July 19, 2004, 1:28 PM
> To: asterisk-users at lists.digium.com
> Subject: Re: [Asterisk-Users] Cheap PoE switches/injectors?
> 
> 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
> 
> 
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