[asterisk-users] PoE budget

Jerry Jones jjones at danrj.com
Thu Jun 5 20:10:35 CDT 2008


On Jun 5, 2008, at 5:08 PM, Bill Michaelson wrote:

>
> I'm considering using a PoE switch like this...
>
> http://www.tigerdirect.com/applications/SearchTools/item- 
> details.asp?EdpNo=3023334&CatId=2800
>
> ...to power as many as 24 Polycom phones of varied kinds.
>
> The sales lit indicates >190 watts available for PoE devices.  But  
> I'm concerned about a problem someone reported elsewhere...
>
> They said...
> ---------------------------------------------------------------------- 
> ------------------
> Is there a reason that Polycom phones do not support PoE classes?  
> We ran into a scenario recently where we could only power 11  
> Polycom 550's on a 24 port switch.
>
> This is because the Polycoms do not announce themselves as being in  
> a specific PoE class, even though the phones only need 6W the  
> switch assumes they need as much power as possible and allocates  
> 14.5W to each port. We have had to resort to running unsupported  
> firmware on the switch to get it to power 24 phones.
> ---------------------------------------------------------------------- 
> ------------------
>
> Does anybody here have insight about this?
>
>

have used many fsm7326p to power 24 phones or 726tp to power 12  
phones and they work great



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