Totally correct - according to me at least. PaulH
----- Original Message ----- From: "Ken D'Ambrosio" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" <asterisk-users@lists.digium.com> Cc: <[EMAIL PROTECTED]>; "Asterisk Users Mailing List - Non-Commercial Discussion" <asterisk-users@lists.digium.com> Sent: Tuesday, March 07, 2006 8:25 AM Subject: Re: [Asterisk-Users] Polycom 501 power over ethernet > 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 > _______________________________________________ --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
