Beware. Although the Polycom 501s will sink power over ethernet
(that is they are powered by a cable pair within a cable that
resembles ethernet), they are NOT IEEE 802.3af POE devices!!!!! They
work on 12 volts (I think -- haven't measured it) instead of 48VDC.
So don't expect to buy a POE source and expect the phone to receive
power just by plugging in a patch cable. They must be powered by the
Polycom voltage sources.
Nevertheless, here's what works for me:
Netgear FS108 :: Polycom injector cable :: RJ45 coupler :: patch
cable :: Polycom 501
Some notes:
1. The Polycom injector cable should be plugged into a POE port on
the switch (the Netgear FS108 switch has both powered and unpowered
ports), or the Polycom injector will not source power.
2. The Netgear FS108 is NOT sourcing power.
3. The patch cable is a 50-foot CAT5.
3. To beat a dead horse, the Polycom 501 itself, is NOT a POE phone,
IMHO. Caveat emptor.
Bill
On Apr 21, 2006, at 8:07 AM, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
Hi listers,
I am looking for people who have used Power over Ethernet
switches, primarily in conjunction with Polycom IP 501's. I've
been looking at the Linksys SRW224P, since I've had good luck with
the SRW224 in our office. However, Nortel, Cisco, Adtran, etc. all
have an offering, all of which vary in price. I would appreciate
any input people have to offer.
Thanks,
James
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Bill
William M. Conlon, P.E., Ph.D.
To the Point
345 California Avenue Suite 2
Palo Alto, CA 94306
vox: 650.327.2175 (direct)
fax: 650.329.8335
mobile: 650.906.9929
e-mail: mailto:[EMAIL PROTECTED]
web: http://www.tothept.com
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