I've got an interesting situation where I have one cable run from the feed area to the service area. I have three devices that I need to power at the service area. Is anyone aware of a device that will take the POE from the cable run and then allow me to split it to two or three devices at the service end? When I search for splitter all I get are the injectors, but I figure someone has to make something.... I realize I'll need a power adapter with enough amps to power the full load at the end. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20100722/4b8804b8/attachment.htm
There is no such device -- it's outside of the POE spec. Class 3 devices are allowed to consume at max 15.4W. Most phones are class 3 devices. The math just doesn't work out. Even if you used the draft standard for class 4 (~30W), you could still power max 2 devices at 15W/ea. -Dave On Thu, Jul 22, 2010 at 2:46 PM, Matt <mhoppes at gmail.com> wrote:> I've got an interesting situation where I have one cable run from the feed > area to the service area. I have three devices that I need to power at the > service area. Is anyone aware of a device that will take the POE from the > cable run and then allow me to split it to two or three devices at the > service end? > > When I search for splitter all I get are the injectors, but I figure > someone has to make something.... I realize I'll need a power adapter with > enough amps to power the full load at the end. > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20100722/e93754b6/attachment.htm
Will your single POE port even supply enough power to three devices without complaining? Plus, what about the data? Sounds as if you will need a smaller switch in the service area to supply power and data John Novack Matt wrote:> I've got an interesting situation where I have one cable run from the > feed area to the service area. I have three devices that I need to > power at the service area. Is anyone aware of a device that will take > the POE from the cable run and then allow me to split it to two or > three devices at the service end? > > When I search for splitter all I get are the injectors, but I figure > someone has to make something.... I realize I'll need a power adapter > with enough amps to power the full load at the end.-- Dog is my Co-pilot
On Thu, Jul 22, 2010 at 2:46 PM, Matt <mhoppes at gmail.com> wrote:> I've got an interesting situation where I have one cable run from the feed > area to the service area.?? I have three devices that I need to power at the > service area.? Is anyone aware of a device that will take the POE from the > cable run and then allow me to split it to two or three devices at the > service end?The obvious answer is "don't do that". *buy DC power bricks for the phones / devices *buy a small PoE switch for the area, plugged into the single ethernet cable as a trunk *pull more cable from the original endpoint Any of those three will be more reliable and predictable when debugging than inventing your own PoE solution. I've tried to invent my own PoE solution using a soldering iron and bulk ethernet cable. Take it from me, don't go down that road. Yes, you will learn all manner of interesting things about DC voltage loss over distance, blah, blah, blah. Your time is almost undoubtedly worth more money than you'll save by pursuing the 'conventional approaches'. Just don't do it.