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2006 Mar 05
6
Polycom 501 power over ethernet
When I bought two Polycom 501 SIP phones, I naively thought they were
Power-over-Ethernet (IEEE 802.3af) because they were "powered over
ethernet." Silly me.
Polycom must have some odd voltage or funny way of injecting the
power, because the POE switch I bought for them (Netgear F@510P)
won't power them, though if I use the Polycom-supplied AC adapter and
ethernet power injector cable, they work with the switch in either
its powered or unpowered ports.
Anyhow, I hadn't seen any mention of how people power these phones,
as I had planned on centralizing phone power...