Joel and I wrote an article for Cabling Business Magazine about this; it's in the July issue.
Basically, Cat 3 cabling is part of the 802.3af standard, so you are supposed to be able to use it for PoE. Jim Dave Donovan wrote: > I'm reviving an old thread here. > > On Thu, Dec 20, 2007 at 12:07 PM, Jim Van Meggelen > <[EMAIL PROTECTED]> wrote: >> For a long time now the common wisdom is that a big obstacle to >> re-using Cat3 cabling for VoIP phones is that PoE is not supported >> on Cat3. >> > > Jim, > > Did you ever go ahead with Voice and POE over Cat3 project? > > Someone wired my office with Cat3 only 2 years ago. (sigh) > Now I'm stuck with the decision to choke my gigabit LAN back > to 100Mbps and use the switch that's built into the Aastra > phones, or leave the data network alone and put new jacks on > the Cat3 voice runs and use that. > > I can't see anything wrong with the theory here. We all used > Cat3 networks for our networks 15 years ago. 4 pairs should > easily suppor POE. If I used the Cat3 cable, I'd lock all > the devices down at 10mbps just to avoid pushing the limits > of Cat3. Using the Cat3 would give me the peace of mind that > comes from knowing you have an isolated network for voice. > > The unspoken third option is to rip it all out and put in new drops. > Unfortunately, it's not in the budget. > > I'd be glad to hear about anyone's experience with a setup like this. > > Thanks in advance, > Dave > > > >> This article would seem to disgreee: >> >> http://en.wikipedia.org/wiki/Power_over_Ethernet >> >> Comments? Opinions? Experiences? >> >> Thanks, >> >> Jim >> >> >> -- >> Jim Van Meggelen >> Core Telecom Innovations >> [EMAIL PROTECTED] >> www.coretel.ca >> 416-425-6111 x6001 >> 877-CORETEL x6001 (Canada) >> www.oreillynet.com/pub/au/2177 >> http://downloads.oreilly.com/books/9780596510480.pdf >> >> > --------------------------------------------------------------------- >> 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]
