asterisk users - Nov 2004 - OT - 3com 3C17205 & cisco 79xx

Does anyone know if the 3com 3C17025 (which supports NBX phones and  IEEE 
802.3af ) would work with Cisco 79xx phones for PoE ?

Many thanks.

Asterisk wrote:
> Does anyone know if the 3com 3C17025 (which supports NBX phones and  
> IEEE 802.3af ) would work with Cisco 79xx phones for PoE ?
> 
> Many thanks.
I very much doubt it. I bought a 4400 PWR to test with our Siemens 
Optipoint handsets, which also support 802.3af. The two do not work 
together. The official response I was given was that it is due to 
different detection algorithms in use by the various vendors. In the end 
we purchased some PowerDsine kit to supply the power, which is supposed 
to be the most compatible with a range of vendors 8023.af kit.

Chris

Cisco 79xx phones are NOT 802.3af compliant or even compatible. If you have
a mid-span 802.3af injector, this can work with the phone, provide you
follow the instructions at -
http://www.voip-info.org/tiki-index.php?page=Cisco%20POE

If you have an end-span injector, such as 3-com switch forget it, it will
never work.

Regards
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com 
> [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Asterisk
> Sent: Friday, 19 November 2004 5:40 PM
> To: asterisk-users@lists.digium.com
> Subject: [Asterisk-Users] OT - 3com 3C17205 & cisco 79xx
> 
> 
> Does anyone know if the 3com 3C17025 (which supports NBX 
> phones and  IEEE 
> 802.3af ) would work with Cisco 79xx phones for PoE ?
> 
> Many thanks. 
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users@lists.digium.com 
> http://lists.digium.com/mailman/listinfo/aster> isk-users
> To 
> UNSUBSCRIBE or update options visit:
>    
http://lists.digium.com/mailman/listinfo/asterisk-users