Question about NetGear ProSafe FS726TP Smart Switch switch 24 ports (S4416379)

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Netgear fs726tp and cisco phones

i have 6 netgear fs726tp and i also have several phone models Cisco 7940 and Cisco 7912;s and i can;t figure out why when i plug the phones in that the PoE doesn't work. has anyone had this problem and got it working if so i could really use help

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Re: netgear fs726tp and cisco phones

That the 7940 and 60
phones from Cisco do not support the IEEE 802.3af Power Over Ethernet
they would work if you
simply reversed the polarity of 2 of the pairs of wire. i.e
by swapping 4 with 7, and 5 with 8 you could use a standard
POE injector to power the phone.
if you have a crimp tool and some cable laying around, you can give it
a whirl and it works. If you aren't familiar with making cable,
don't try this
Basically, you just wire one side of the cable as standard 568b
and then reverse 4 and 7, and 5 and 8 on the other side. Then,
simply plug your Cisco into a standard POE injector and Your phone works.

Posted on Nov 20, 2007

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