Sorry, I should qualify that last comment: Gigabit and PoE cannot co-exist on the same port when powered mid-span. The other pairs are used in gigabit ethernet. If you wired a patch panel with pairs of jacks injecting power as described, you could patch these into a gigabit switch, and have them running at 100Mb mode. Has anyone actually measured the power consumption of an Aastra 480i? 1.2A at 48v is 57.6 watts - way overkill. I suspect you could use the 48 volt supply that comes with the 9133i (also a very nice phone, I have several) to power multiple phones. It could likely power all four.
-Tim On May 18, 2006 18:49, Tim St. Pierre wrote: > Here's another thought, if you are ambitious. > > The Aastra 480i does not come with a transformer, and you won't get a > transformer at radioshack with a 48vDC output. It's 48v because that is > the standard battery voltage of telecom plants, so that's what IEEE decided > to make the standard for 802.11af. > > You can power a large or a little number of phones quite cheaply, if you > are comfortable with having power present at all times (your office isn't > changed around a lot). > > Order a 48v DC power supply from a company like electrosonic, or perhaps > you can get one at surplus. > > Where your cable plant terminates, cross connect the white/blue pair > together to your positive bus, and the white/brown pair to your negative > bus. I would recommend fusing each drop separately at 1.5A. Each phone > uses 1.2, so that gives you a little headroom. > > If you have a patch panel, you could wire pairs of jacks - white/green and > white/orange straight through, with power connected to the other pairs on > one of the jacks. > > This is a sort of do-it-yourself PoE injector, but is cheap, and scales > very well. It only requires one wall socket to run many phones. It will > work with any 802.1af compliant devices, as they must take power from these > pairs. It does not itself comply with the standard, because it does not > have a pilot voltage mechanism. > > If you pre-wired this device on a patch panel before hand, it would be easy > to install, and be very tidy. It will also work with Gigabit ethernet. > > -Tim > > On May 18, 2006 17:40, Nabeel Jafferali wrote: > > No, the P50 is a PoE splitter. What you need is a PoE injector - I have > > experience with the Aastra or 3com ones. I can get you either one. > > > > Nabeel > > > > > -----Original Message----- > > > From: Chad Kempt [mailto:[EMAIL PROTECTED] > > > Sent: May 18, 2006 3:25 PM > > > To: Nabeel Jafferali > > > Subject: Re: [biz] POE for IP phones (ie; Aastra 480i) > > > > > > Are you referring to the P50 then? Or a product that's not > > > D-Link at all? > > > > > > Thanks, > > > Chad > > > > > > Nabeel Jafferali wrote: > > > > Chad: > > > > > > > > The D-Link P200s are overkill for your needs. They are PoE Adapters > > > > (injector and splitter). All you need is an injector if you > > > > > > are using > > > > > > > PoE-capable phones. > > > > > > > > Let me know if you need specific model numbers. > > > > > > > > Nabeel > > > > www.voipdepot.ca > > > > > > > >> -----Original Message----- > > > >> From: Chad Kempt [mailto:[EMAIL PROTECTED] > > > >> Sent: May 18, 2006 2:15 PM > > > >> Cc: [email protected] > > > >> Subject: Re: [biz] POE for IP phones (ie; Aastra 480i) > > > >> > > > >> I guess I should mention that I'm a reseller...so I wont > > > > > > be ordering > > > > > > >> from tigerdirect or anything, it's just that I haven't used any of > > > >> these low end POE switches before and I don't like trying > > > > > > things out > > > > > > >> on clients without at least getting a recommendation ;) > > > >> > > > >> The same problem exits with that netgear as with the linksys (not > > > >> just the price), a 24 port switch for an office with 3 phones is > > > >> overkill...I think an 8 port would give them enough room > > > > > > to add a few > > > > > > >> more desks. As for needing gigabit, I suppose not they do > > > > > > move some > > > > > > >> large files around but it's just that gigabit is very cheap in the > > > >> small switches so it's 'why not'. Of course why not because they > > > >> don't have POE is a good answer...but 3x55$ for the D-Link > > > > > > P200's and > > > > > > >> 1x79$ for a 8 port gigabit linksys switch is cheaper than > > > > > > these giant > > > > > > >> 24 port switches (which are just gigabit uplink...which would > > > >> probably be ok to use for the server and then 100Mb to the > > > > > > clients). > > > > > > >> Bleh, I guess in about a year they'll have what I want for > > > > > > the price > > > > > > >> I want...in the mean time I'm going to have to settle. > > > >> > > > >> > > > >> > > > >> And > > > >> > > > >> Mike Ashton wrote: > > > >>> In such a small install not sure how much Gigabit your > > > >> > > > >> going to need, > > > >> > > > >>> but if it is a concern take a look at the NetGear 24 port that > > > >>> TigerDirect has at CA$381. Is 24 10/100port, 12 w POE and > > > > > > 2 Gigabit > > > > > > >>> coper plus 2 GBIC slots. > > > >> > > > >> http://www.tigerdirect.ca/applications/SearchTools/item-detail > > > >> s.asp?EdpNo=1697254&CatId=868 > > > >> > > > >>> Also right now they have a special to get either a IPod Nano or a > > > >>> NetGear Storage Central( until Jun30 ) > > > >>> > > > >>> Chad Kempt wrote: > > > >>>> That looks not bad but once I get up near that price range > > > >> > > > >> I can get > > > >> > > > >>>> a Linksys SRW224P and propose the cost difference because of the > > > >>>> gigabit + QOS etc etc; But I don't want to oversell. I'm still > > > >>>> wondering if maybe the three POE injectors from D-Link + a > > > >> > > > >> Linksys 5 > > > >> > > > >>>> port or 8 port gigabit workgroup switch wouldn't be a more sound > > > >>>> decision. > > > >>>> > > > >>>> Thanks, > > > >>>> Chad > > > >>>> > > > >>>> Mike Dancy wrote: > > > >>>>> The trendnet also does the trick. > > > >>>>> It's a bit more but a quality box. > > > >>>>> http://www.trendnet.com/products/TPE-S88.htm > > > >>>>> $299 CDN > > > >>>>> > > > >>>>> and yes, I sell them. So I may be biased. > > > >>>>> Mike > > > >>>>> -----Original Message----- > > > >>>>> From: Mark Palser [mailto:[EMAIL PROTECTED] Sent: > > > >> > > > >> Thursday, May 18, > > > >> > > > >>>>> 2006 5:20 AM > > > >>>>> To: Chad Kempt; [email protected] > > > >>>>> Subject: Re: [biz] POE for IP phones (ie; Aastra 480i) > > > >>>>> > > > >>>>> Take a look at Netgear, they may have something, Mark. > > > >>>>> ----- Original Message ----- From: "Chad Kempt" > > > >>>>> <[EMAIL PROTECTED]> > > > >>>>> To: <[email protected]> > > > >>>>> Sent: Thursday, May 18, 2006 12:52 AM > > > >>>>> Subject: [biz] POE for IP phones (ie; Aastra 480i) > > > >>>>> > > > >>>>> > > > >>>>> Evening, > > > >>>>> > > > >>>>> Just wondering if there is a more economical way to do > > > >> > > > >> POE in a SOHO > > > >> > > > >>>>> environment (3 phones) other than using the D-Link > > > >> > > > >> DWL-P200 modules > > > >> > > > >>>>> on each phone. I was looking for low end POE enabled > > > >> > > > >> switches from > > > >> > > > >>>>> Linksys and D-Link and didn't see any...before I go ahead > > > >> > > > >> and order > > > >> > > > >>>>> the DWL-P200's does anyone know of a small 8 port POE > > > >> > > > >> switch in the > > > >> > > > >>>>> $175-250 range that I overlooked, preferably with gigabit > > > >> > > > >> (wow I'm > > > >> > > > >>>>> asking a lot for a little ;) ). > > > >>>>> > > > >>>>> Thanks, > > > >>>>> Chad > > > > > > --------------------------------------------------------------------- > > > > > > >>>>> To unsubscribe, e-mail: [EMAIL PROTECTED] For additional > > > >>>>> commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > > > > > > >>>>> To unsubscribe, e-mail: [EMAIL PROTECTED] For additional > > > >>>>> commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > > > > > > >>>> To unsubscribe, e-mail: [EMAIL PROTECTED] For additional > > > >>>> commands, e-mail: [EMAIL PROTECTED] > > > >>> > > > >>> -- > > > >>> Mike Ashton > > > >>> > > > >>> Quality Track Intl > > > >>> > > > >>> Ph: 647-722-2092 x 251 > > > >>> Cell: 416-527-4995 > > > >>> Fax: 416-352-6043 > > > >>> > > > >>> QTI CONFIDENTIAL AND PROPRIETARY INFORMATION > > > >>> > > > >>> The contents of this material are confidential and > > > >> > > > >> proprietary to Quality Track International, Inc. > > > >> > > > >>> and may not be reproduced, disclosed, distributed or used > > > >> > > > >> without the express permission of an authorized > > > > > > representative of QTI. > > > > > > >>> Use for any purpose or in any manner other than that > > > >> > > > >> expressly authorized is prohibited. > > > >> > > > >>> If you have received this communication in error, please > > > >> > > > >> immediately delete it and all copies, and promptly notify > > > > > > the sender. > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > > > > >> To unsubscribe, e-mail: [EMAIL PROTECTED] For additional > > > >> commands, e-mail: [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] -- Tim St. Pierre IP telephony specialist sip://[EMAIL PROTECTED] Toronto: 647 722 6930 Toll-Free 1 888 488 6940 [EMAIL PROTECTED]
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