Pavel / Joseph - I think I have something that will solve your dilemma.
Powersense make an IEEE 802.3af to Cisco Discovery Protocol (CDP) converter
which should work with your Netgear switch. You need (1) for each Cisco
phone. You run RJ45 out of your Netgear PoE Switch, into the PowerSense
module, and then RJ45 out of the module, to your Cisco phone. The converter
modules run around $20/ea.
a.. BL-8858-01 PoE Connector allows a Cisco 7900 series IP phone to take
Power over Ethernet from an IEEE 802.3af style Ethernet switch or mid-span
power injector.
Cory J Andrews
++++++++++++
VOIPSupply.com
454 Sonwil Drive
Buffalo, NY 14225
++++++++++++++
voice - 716.630.1555 X22
email - [EMAIL PROTECTED]
AIM - B2CORY
----- Original Message -----
From: "Pavel Jezek" <[EMAIL PROTECTED]>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<[email protected]>
Sent: Thursday, March 23, 2006 5:43 PM
Subject: Re: [Asterisk-Users] Netgear FS116P and Cisco 79XX phones
Hi Joseph,
I think, that old ci$co phones using not only different pins, but also
different power detection,
so, you are probably out of luck, if you trying to use old ci$co phones
with 802.3af (only) compliant power device,
seems, that powerdsine midspans provide power detection compatible with
ci$co pre-standard phones....
look at 7905/7912 (on powerdsine web site) that even not require poe
polarity dongle and works with powerdsine, even that this phone are not
802.3af compliant
if you use 802.3af switches, best way is to stay away completely from not
compatible devices, or if you "must" use old ci$co phones, you must buy
quite expensive ci$co power switches ... ;-)
PJ
Joseph Rothstein wrote:
I am hoping that someone has had better luck with this than I have.
I would like to connect Cisco 7940s and 7960s to the Netgear FS116P, and
take advantage of its POE. I know that the Cisco phones use Cisco's
"pre-standard" POE implementation, but as I understand it the difference
is
really only two pins.
I bought a bunch of PowerDsine inline power adapters which supposedly
change
the right pins so that standard POE will work with Cisco POE, but it does
not (other POE devces work fine on the Netgear such as SNOMs), at least
not
on the Netgear. I have tried several different settings on the phone as
well, changing the media type, but the FS116P just does not recognise
that
there is a POE devices attached to it.
If anyone has any experience gettings these phones to work on this switch
I
would appreciate any help.
Regards,
Joe
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