[Asterisk-Users] Polycom 501 power over ethernet

[Paul Hales]

For Polycom IP500/501's and IP300/301's you need a special polycom POE
cable.

When you buy Polycom phones you can usually specify POE or powerpack.

PaulH

On Sun, 2006-03-05 at 16:23 -0800, William M Conlon wrote:
> 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 at 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 on a UPS to supply my  
> Asterisk server and POE switch.  Now the question is:
> 
> Can the Polycom AC-powered injector be used with a standard ethernet  
> patch cable:
> 
> 	switch :: Polycom injector cable :: RJ45 coupler :: patch cable ::  
> Polycom 501
> 
> which would allow me to power the Polycom AC adapters by my UPS.  Or  
> do I need to provide a UPS at each phone and run the ethernet like
> 
> 	switch :: patch cable :: RJ45 coupler :: Polycom injector cable ::  
> Polycom 501
> 
> thanks.
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