You're spot on!! 802.3af has all kinds of protection circuitary built in.
P > -----Original Message----- > From: Greg Hill [mailto:[EMAIL PROTECTED] > Sent: Monday, July 19, 2004, 1:28 PM > To: [EMAIL PROTECTED] > 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 > > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users