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Will a 24v power injector work on a 12v VOIP POE phone?
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05-06-2008
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Will a 24v power injector work on a 12v VOIP POE phone?
I have a Polycom 501 VOIP phone that came with a power POE cable. It works when the power line is disconnected but the LAN cable is plugged into a POE switch. But when I connect the power line, it stops working. Maybe I have a bad transformer? Anyway, I want to put it on the network where there is no POE switch, so I was thinking of gettting a power injector. There's a cheap one available, but it's 24v and the phone is 12v. Is that a problem?
I've also heard that some injectors have a 60-cycle hum. Is there a way to avoid this/
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