[asterisk-users] Polycom Power

Eric "ManxPower" Wieling eric at fnords.org
Thu Mar 29 20:24:01 MST 2007


Noah Miller wrote:
> Hi Mike -
> 
>> I have a 501 with traditional power and a 301 with PoE. I rightfully 
>> assumed
>> that the traditional power from the 501 would work on the 301.
>>
>>  How do I get the PoE to work? Do I use the Polycom PoE cable in 
>> addition to
>> whatever PoE injection method I use? I have a Cisco PoE injector that 
>> works
>> on my Cisco AP350 and my 7960. No combination of this injector, the 
>> Polycom
>> cable, and the phone result in success.
>>
>>  I have 18v PoE injectors that I use for other things, but I hear that
>> 802.3af is 48v, therefore probably wouldn't work.
>>
>>  How do I use Polycom PoE?
> 
> You'll probably have to get different injectors, or a new PoE switch.
> The newer Cisco PoE switches do speak 802.3af, but many of the older
> Cisco PoE products do not.  The original Cisco PoE implementation was
> proprietary and does not conform to 802.3af.

Polycom has cables available to support Cisco PoE and 802.3af PoE.  They 
are, however, different cables.


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