[Asterisk-Users] POE

asteriskstuff@ziplip.com
Sun, 29 Aug 2004 18:09:50 -0000

Hi Steve

3COM 4400 PWR 802.3af switches (there's about 6 on E-Bay at the moment) and
then use 3cnjvoip-cpod to convert the 802.3af feed to be used with the Cisco
79xx phones (it's specifically designed to do this).  I'm using this
setup (also with 3cnj205 wall switch for traffic prioritisation) on 15 Cisco
7960's and not a PSU in site...works great.

Paul

> -----Original Message-----
> From: Michael Welter [mailto:mike@introspect.com]
> Sent: Saturday, August 28, 2004, 11:33 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> <asterisk-users@lists.digium.com>
> Subject: Re: [Asterisk-Users] POE
>
> Steve Maroney wrote:
>
> > Hey guys,
> >
> > I was wondering what POE solutions are being used ? Ive done some
> > searching on google and found that PowerDsine seems to be good brand.
> >
> > Any comments,suggestions, and experiences on POE hubs other POE
products
> > would be greatly appreciated.
> >
> > Thank you,
> > Steve Maroney
> >
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> >
>
> Since the Cisco 79XX phones preceded the PoE standard, they are
> different--polarity is reversed.
>
> IANAE, but as I understand the PoE devices, there are two types--one
> always applies -48VDC to the brown pair while the other senses (as per
> the PoE spec.) whether the device at the other end requires power.
>
> I'm not willing to risk a $300 Cisco set, so I'm still using the
wall
> wart.  Is anyone providing LAN power to 79XX phones at a reasonable cost?
>
> Mike
>
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