On Mon, March 6, 2006 4:19 pm, [EMAIL PROTECTED] wrote: > I have installed several hundred polycom's, and I have never seen a > 500/501 > with a power jack. All with the inline cable, as you mention. > > Of course, if someone can provide photo evidence I will stand corrected.
I think the confusion here is the different *ways* the 300/500/600 do PoE: 301 has a power brick, just like (say) a Grandstream. 501 has _almost_ PoE: the cable is (as noted above) in-line, but this might confuse someone differentiating with the 301. 601 has "true" PoE, where you've got your PoE switch, a stock Ethernet cable, and the phone -- nothing else, and no special cabling required. -Ken (purveyor of fine differentiations) > > PaulH > > > ----- Original Message ----- > From: "The VoIP Connection" <[EMAIL PROTECTED]> > To: "'Asterisk Users Mailing List - Non-Commercial Discussion'" > <asterisk-users@lists.digium.com> > Sent: Tuesday, March 07, 2006 4:26 AM > Subject: RE: [Asterisk-Users] Polycom 501 power over ethernet > > > >> I've seen a lot of IP501 and I've never seen one with a power jack. >> According to Polycom they all use the cable. >> >> >> Possibly it was an IP500? -Mike >> >> >> Michael Crown >> Managing Partner >> www.thevoipconnection.com 321.989.6728 ext. 611 >> sip:[EMAIL PROTECTED] >> >> >>> -----Original Message----- >>> From: Douglas Garstang [mailto:[EMAIL PROTECTED] >>> Sent: Monday, March 06, 2006 10:13 AM >>> To: Asterisk Users Mailing List - Non-Commercial Discussion >>> Subject: RE: [Asterisk-Users] Polycom 501 power over ethernet >>> >>> >>> No, some IP 501's have the inline cable and some have the power jack. >>> >>> >>> -----Original Message----- >>> From: Paul Hales [mailto:[EMAIL PROTECTED] >>> Sent: Sunday, March 05, 2006 8:59 PM >>> To: Asterisk Users Mailing List - Non-Commercial Discussion >>> Subject: RE: [Asterisk-Users] Polycom 501 power over ethernet >>> >>> >>> >>> >>> The IP300/301 has the power jack, the IP500/501 the inline cable. >>> >>> >>> PaulH >>> >>> >>> On Sun, 2006-03-05 at 20:56 -0700, Douglas Garstang wrote: >>> >>>> Not true. Some do and some don't. Some have a place to plug >>>> >>> a separate DC adapter, and some have the inline power, where the >>> adapter plugs into the ethernet cable. Not sure which ones are newer, >>> and which are older. >>>> >>>> -----Original Message----- >>>> From: Michael Welter [mailto:[EMAIL PROTECTED] >>>> Sent: Sun 3/5/2006 6:50 PM >>>> To: Asterisk Users Mailing List - Non-Commercial Discussion >>>> Cc: >>>> Subject: Re: [Asterisk-Users] Polycom 501 power over ethernet >>>> >>>> >>>> >>>> >>>> The IP501 does not have a power jack. You'll need one >>>> >>> of the Polycom >>>> cables. >>>> >>>> William M Conlon wrote: >>>> >>>>> My recollection of the marketing fluff was that we >>>>> >>> would just use our >>>>> legacy network (cables) and the devices at both ends >>> would figure out >>>>> whether they were sourcing, sinking, or neither. In >>> the case of the >>>>> 501, it's the special Polycom cable, either with or >>>>> >>> without provision >>>>> for an AC power adapter, that powers the phone. >>> That's what I meant by >>> >>>>> saying the '501' itself is not compliant with 802.3af >>> -- it needs a >>> >>>>> separate thingamajig [tech jargon :)]to be powered. >>>>> >>>>> Anyway I had hoped that I could just plug a CAT-5 >>>>> >>> patch cable from my >>>>> RJ45 wall outlet into the phone. >>>>> >>>>> >>>>> On Mar 5, 2006, at 5:17 PM, Michael Welter wrote: >>>>> >>>>> >>>>>> As I understand 802.3af, the phones go through a >>>>>> >>> negotiation with the >>>>>> unit supplying the power. I don't think it's a >>> matter of -48VDC on a >>>>>> particular pair. I remember a schematic from years >>> ago--it had each >>>>>> of the receive pair and the transmit pair going into >>> a transformer >>>>>> winding, and that winding had a center tap for PoE. >>> This is not >>> >>>>>> something that *I* am going to screw with. >>>>>> >>>>>> The IP501 telephone set is the same for both PoE and >>>>>> >>> local power. >>>>>> With the PoE cable, the 802.3af electronics (the >>>>>> >>> negotiator) is a >>>>>> plastic thing in the cable. For the local power, >>> there is a plastic >>>>>> thingie toward the wall end of the cable, and you >>> plug the wall wart >>>>>> into the plastic thingie. <Notice the advanced >>> technical jargon here> >>>>>> >>>>>> With local power, there is still only one cable one >>>>>> >>> the desk--the >>>>>> power plugs into the cable towards the wall. Except >>> for a power >>>>>> interruption, this has all the advantages of PoE. >>>>>> >>>>>> >>>>>> >>>>>> William M Conlon wrote: >>>>>> >>>>>>> I saw that Polycom offered a cable (not stocked >>>>>>> >>> anywhere), at $40 a >>>>>>> pop for 802.3af connections. That's what made me >>> think the phone >>>>>>> itself is NOT 802.3af compliant. Presumably, for $40, there's >>>>>>> more than a fuse in >>> that special cable. >>>>>>> On Mar 5, 2006, at 4:31 PM, Paul Hales wrote: >>>>>>> >>>>>>>> For Polycom IP500/501's and IP300/301's you need a >>>>>>>> >>> special polycom POE >>>>>>>> cable. >>>>>>>> >>>>>>>> When you buy Polycom phones you can usually >>>>>>>> >>> specify POE or powerpack. >>>>>>>> >>>>>>>> PaulH >>>>>>>> >>>>>>>> >>>>>>>> On Sun, 2006-03-05 at 16:23 -0800, William M Conlon wrote: >>>>>>>> >>>>>>>>> When I bought two Polycom 501 SIP phones, I >>>>>>>>> >>> naively thought they were >>>>>>>>> Power-over-Ethernet (IEEE 802.3af) because they >>>>>>>>> >>> were "powered over >>>>>>>>> ethernet." Silly me. >>>>>>>>> >>>>>>>>> Polycom must have some odd voltage or funny way >>>>>>>>> >>> of injecting the >>>>>>>>> power, because the POE switch I bought for them >>> (Netgear [EMAIL PROTECTED]) >>> >>>>>>>>> won't power them, though if I use the >>> Polycom-supplied AC adapter and >>> >>>>>>>>> ethernet power injector cable, they work with the >>> switch in either >>>>>>>>> its powered or unpowered ports. >>>>>>>>> >>>>>>>>> Anyhow, I hadn't seen any mention of how people >>>>>>>>> >>> power these phones, >>>>>>>>> as I had planned on centralizing phone power on a >>> UPS to supply my >>> >>>>>>>>> Asterisk server and POE switch. Now the question is: >>>>>>>>> >>>>>>>>> >>>>>>>>> Can the Polycom AC-powered injector be used with >>>>>>>>> >>> a standard ethernet >>>>>>>>> patch cable: >>>>>>>>> >>>>>>>>> switch :: Polycom injector cable :: RJ45 >>> coupler :: patch cable :: >>>>>>>>> Polycom 501 >>>>>>>>> >>>>>>>>> >>>>>>>>> which would allow me to power the Polycom AC >>> adapters by my UPS. Or >>>>>>>>> do I need to provide a UPS at each phone and run >>> the ethernet like >>>>>>>>> >>>>>>>>> switch :: patch cable :: RJ45 coupler :: >>> Polycom injector cable :: >>> >>>>>>>>> Polycom 501 >>>>>>>>> >>>>>>>>> >>>>>>>>> thanks. _______________________________________________ >>>>>>>>> --Bandwidth and Colocation provided by Easynews.com -- >>>>>>>>> >>>>>>>>> >>>>>>>>> Asterisk-Users mailing list >>>>>>>>> To UNSUBSCRIBE or update options visit: >>>>>>>>> http://lists.digium.com/mailman/listinfo/asterisk-users >>>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> --Bandwidth and Colocation provided by Easynews.com -- >>>>>>>> >>>>>>>> >>>>>>>> Asterisk-Users mailing list >>>>>>>> To UNSUBSCRIBE or update options visit: >>>>>>>> http://lists.digium.com/mailman/listinfo/asterisk-users >>>>>>>> >>>>>>> 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 >>>>>>> _______________________________________________ >>>>>>> --Bandwidth and Colocation provided by Easynews.com -- >>>>>>> Asterisk-Users mailing list >>>>>>> To UNSUBSCRIBE or update options visit: >>>>>>> http://lists.digium.com/mailman/listinfo/asterisk-users >>>>>>> >>>>>> >>>>>> --Michael Welter >>>>>> Telecom Matters Corp. >>>>>> Denver, Colorado US >>>>>> +1.303.414.4980 >>>>>> [EMAIL PROTECTED] www.TelecomMatters.net >>>>>> _______________________________________________ >>>>>> --Bandwidth and Colocation provided by Easynews.com -- >>>>>> >>>>>> >>>>>> Asterisk-Users mailing list >>>>>> To UNSUBSCRIBE or update options visit: >>>>>> http://lists.digium.com/mailman/listinfo/asterisk-users >>>>>> >>>>> >>>>> 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 >>>>> >>>>> >>>>> _______________________________________________ >>>>> --Bandwidth and Colocation provided by Easynews.com -- >>>>> >>>>> >>>>> Asterisk-Users mailing list >>>>> To UNSUBSCRIBE or update options visit: >>>>> http://lists.digium.com/mailman/listinfo/asterisk-users >>>>> >>>>> >>>>> >>>> >>>> -- >>>> Michael Welter >>>> Telecom Matters Corp. >>>> Denver, Colorado US >>>> +1.303.414.4980 >>>> [EMAIL PROTECTED] www.TelecomMatters.net >>>> _______________________________________________ >>>> --Bandwidth and Colocation provided by Easynews.com -- >>>> >>>> >>>> Asterisk-Users mailing list >>>> To UNSUBSCRIBE or update options visit: >>>> http://lists.digium.com/mailman/listinfo/asterisk-users >>>> >>>> >>>> >>>> _______________________________________________ >>>> --Bandwidth and Colocation provided by Easynews.com -- >>>> >>>> >>>> Asterisk-Users mailing list >>>> To UNSUBSCRIBE or update options visit: >>>> http://lists.digium.com/mailman/listinfo/asterisk-users >>>> >>> >>> _______________________________________________ >>> --Bandwidth and Colocation provided by Easynews.com -- >>> >>> >>> Asterisk-Users mailing list >>> To UNSUBSCRIBE or update options visit: >>> http://lists.digium.com/mailman/listinfo/asterisk-users >>> >>> >>> >> >> _______________________________________________ >> --Bandwidth and Colocation provided by Easynews.com -- >> >> >> Asterisk-Users mailing list >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-users >> >> > > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com -- > > > Asterisk-Users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > > _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users