Russell Senior wrote: >>>>>> "Joe" == Joe Pruett <[email protected]> writes: >>>>>> >>> Power over Ethernet and how is it implemented? I'm tempted to grab >>> 2 Invictus wireless outdoor WAPS, but I'm concerned about what POE >>> is since they use it. >>> >>> http://www.invictuswireless.com/ProductDetails.asp?ProductCode=NS2 >>> > > Joe> poe is quite nice. it lets you use the standard ethernet twisted > Joe> pair connection to deliver power to small bits of hardware (voip > Joe> phones, waps, etc). you can get a poe switch to provide power, > Joe> or poe injectors to add poe to a single run. > > Just beware that not all PoE powered devices are IEEE Standard 802.3af > PoE. Lots of devices I deal with are something called "passive" poe > where there is no handshaking protocols, and the end devices are > typically expecting less than the "standard" 48V. For example, > virtually all of the Ubiquiti gear uses "passive" PoE in the range > from about 10-24 Volts or something (from memory, please check). The > Nanostation comes with a little injector that just puts a nominally > 12V DC power supply on the ethernet cable (two wires +12V, two wires > ground). There is some resistive voltage loss in long runs of > cabling. It is not uncommon for people to use 15V or 18V in > situations like that. In anything under about 100 feet, the supplied > 12V adapter is going to be just fine. > Any disadvantage/corruption from running power over the Ethernet cable? Regards Fred James
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