Question

I want to use a RUT950 and the WAN port with fallover to SIM cards.

However on that WAN cable I need to bring in some PoE to the cabinet housing the RUT950.  My plan is to use a POE splitter to pull off the 12 or 24v. Having 24v PoE on the input Ethernet line on this Wan port.. is that a problem.  I know the device won't like 48v PoE but is there a problem with 24v going in that port (don't need to power the device this way).

Answer 1

Hello,

Have you checked the wiki page for RUT955 powering options ? https://wiki.teltonika.lt/view/RUT955_Powering_Options

RUT955 can be powered via 1st LAN port, not the WAN port.

Comments

Yep I sorry you misunderstand - I've read this page.  I'm not looking to power the device by PoE.  But I do need to plug a WAN cable in which does have PoE.. I'm merely asking if having this voltage on the ethernet cable will cause damage.

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Yes, I might have not understood your point well.

Could you draw a simple topology how you are planing to connect everything ? Will you use Passive PoE or is it a standard 802.3 af ?

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Don't worry - just wanted to know if I could plug in an ethernet cable that happen to have 12v PoE in to the WAN socket.  Didn't want to power the device with this.

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Hi again,

Scenario like this was never tested for a long term, but after plugged in for a day no affect was spotted.

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Thanks - this is good to know.. as long as it didn't go pop straight away all is good.