<div>I was reading somewhere that Polycom cables only work when the power is over pins 1236 (signal pairs). I won't swear to it, but that's what I read.</div>
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<div>Anyway, most PoE injectors (not all, but most) inject power on pins 4578 (non-signal pairs), meaning it won't work with things that need the power on the signal pairs. For that, you'll need a switch that supports PoE.
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<div>For simple testing, Netgear has some cheap unmanaged switches that provide PoE that's 802.11af-compliant. We're using a couple of them in really small satellite offices, and they've been holding up pretty well. But I wouldn't use them in a large-scale deployment, since they don't support VLAN trunking, QoS, and what-not.
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<div><span class="gmail_quote">On 3/29/07, <b class="gmail_sendername">Eric ManxPower Wieling</b> <<a href="mailto:eric@fnords.org">eric@fnords.org</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Noah Miller wrote:<br>> Hi Mike -<br>><br>>> I have a 501 with traditional power and a 301 with PoE. I rightfully
<br>>> assumed<br>>> that the traditional power from the 501 would work on the 301.<br>>><br>>> How do I get the PoE to work? Do I use the Polycom PoE cable in<br>>> addition to<br>>> whatever PoE injection method I use? I have a Cisco PoE injector that
<br>>> works<br>>> on my Cisco AP350 and my 7960. No combination of this injector, the<br>>> Polycom<br>>> cable, and the phone result in success.<br>>><br>>> I have 18v PoE injectors that I use for other things, but I hear that
<br>>> 802.3af is 48v, therefore probably wouldn't work.<br>>><br>>> How do I use Polycom PoE?<br>><br>> You'll probably have to get different injectors, or a new PoE switch.<br>> The newer Cisco PoE switches do speak
802.3af, but many of the older<br>> Cisco PoE products do not. The original Cisco PoE implementation was<br>> proprietary and does not conform to 802.3af.<br><br>Polycom has cables available to support Cisco PoE and
802.3af PoE. They<br>are, however, different cables.<br>_______________________________________________<br>--Bandwidth and Colocation provided by <a href="http://Easynews.com">Easynews.com</a> --<br><br>asterisk-users mailing list
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