POE Another way??|Sundance Business VOIP Telephone Help

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Re: POE Another way?? #471751 09/20/07 11:40 PM
Joined: Aug 2002 Posts: 2,608 Albany, N.Y. USA upstateny Moderator-ESI, Shoretel
upstateny Moderator-ESI, Shoretel Joined: Aug 2002 Posts: 2,608 Albany, N.Y. USA	I have found the injectors for $30 or so. I believe it was at VOIPsupply.com John Corrigan New Phone Systems and Service

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Re: POE Another way?? #471752 09/21/07 03:46 AM
Joined: Jan 2005 Posts: 15,378 Likes: 13 Fayetteville, NC EV607797 Moderator-Vertical, Vodavi, 1A2, Outside Wire
EV607797 Moderator-Vertical, Vodavi, 1A2, Outside Wire Joined: Jan 2005 Posts: 15,378 Likes: 13 Fayetteville, NC	My concern with chopping the power cord and connecting it this way would void the UL/CSA/CE listing. Just about anything that uses electricity must have these listings to be sold in the US and Canada. By altering the factory assembly, you would be voiding the warranty AND violating UL/CSA requirements. Leviton does make a wall phone jack that was designed for this purpose, but it was made to be used with cordless phones. I don't know if it would work for this application or not unless they've come out with an 8P/8C version. Ed Vaughn, MBSWWYPBX

Re: POE Another way?? #471753 09/21/07 11:13 AM
Joined: Mar 2001 Posts: 3,268 Mission, TX S. Beloit, IL JWRacedog OP Moderator-Allworx, Nisuko-Tie, Vodavi
OP JWRacedog Moderator-Allworx, Nisuko-Tie, Vodavi Joined: Mar 2001 Posts: 3,268 Mission, TX S. Beloit, IL	Thanks. All of the phone AC adapters are 24 volt. If the POE 802.3f device is made for 48V--then that wouldn't be very good. I've got some time before the install to get as much research done as possible. Next week we go for our training. Should be fun. Chopping the power cord is our "last resort" option. With some of the inexpensive power injectors---that seems to be the way to go if there are only 3-5 phones that you have to do that for. Rockford VoIP

Re: POE Another way?? #471754 09/21/07 11:47 AM
Joined: Jun 2007 Posts: 2,106 Tampa Bay, FL Kumba Member
Kumba Member Joined: Jun 2007 Posts: 2,106 Tampa Bay, FL	If the phones are listed to work with 802.3af PoE, then all you need is a PoE Switch. Always check with the MFG.

Re: POE Another way?? #471755 10/03/07 04:51 PM
Joined: Sep 2006 Posts: 329 Our Nation's Capital The Grim Reaper Member
The Grim Reaper Member Joined: Sep 2006 Posts: 329 Our Nation's Capital	Here is an adapter for powering legacy devices with POE Click here for details. Linksys also makes splitters like this. Also keep in mind that just because the plug-in power cube for your device is 24V, it does not necessarialy follow that your device also requires 24V for POE. Check the manufacturer's specs. There are a lot of different POE schemes out there. The main ones are IEEE 802.3af and the Cisco proprietary scheme. But there are many others. Also, newer Cisco phones may use the IEEE 802.3af standard rather than the Cisco standard. Also pay attention to POLARITY. The Cisco proprietary POE uses different polarity than the IEEE 802.3af POE. I.e., the positive and negative wires are reversed.

Re: POE Another way?? #471756 10/04/07 12:58 AM
Joined: Nov 2001 Posts: 1,640 Philadelphia Pa suburbs ttech Moderator-NEC
ttech Moderator-NEC Joined: Nov 2001 Posts: 1,640 Philadelphia Pa suburbs	What is shone in the article is NOT POE. It is just using un-used conductors to extend the power. Nec DSX Aspire UX5000 SV8100 SV9100 SL1100 Certified

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