Ooma telo and POE

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Ooma telo and POE

Post by coastalcruiser » Sun Apr 29, 2012 6:18 pm

I just did some searching to see if you could power a telo with POE (Power Over Ethernet), rather than via the supplied power supply.

I would assume the answer is NO, but I am looking to see if anyone has done a jury rigged POE setup by injecting 5VDC into the 4 spare pair on the Cat5 run and then split the power off at the telo.

What I am trying to determine is if running DC on the Ethernet cable interferes with a phone call.


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Re: Ooma telo and POE

Post by thunderbird » Sun May 06, 2012 12:13 pm


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Re: Ooma telo and POE

Post by hardwaremonkey » Wed May 30, 2012 7:22 am

POE cannot interfere with a proper CAT-5 and any device. However, jury-rigging a break in a cat-5 will degrade shielding inherent in twisted pairs. You would need to make all the wires terminate at a junction with the same length of runs for each pair, then split the power from the ethernet to two separate cat-5 ports - one for ethernet and one for power.

Your next issue is going to be the quality of the POE injector. I use POE all the time, and I would not try this with an Ooma box. You are begging for a problem. I would simply extend your DC cables by cutting, splicing (with crimp, not solder), heat shrink, and be done with it.

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