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Soundpoint IP 331 - PoE Pins?

Occasional Visitor

Soundpoint IP 331 - PoE Pins?

Hello community readers, I am trying to setup my new Soundpoint 331 and my 24V PoE Injector is not working.


Right now, I am powering the phone using 24V PoE connected to a DC cable into the DC Port, and instead of that I would like to splice a ethernet cable and wire it correctly to something that the phone would accept


Can somebody tell me what pins/wires the Soundpoint IP 331 uses for PoE? brown and blue?



Message 1 of 4
Polycom Employee & Community Manager

Re: Soundpoint IP 331 - PoE Pins?

Hello @Fluffy1 ,


Welcome to the Poly Community.


Poly phones support the >IEEE 802.3<  standard but I am not sure to give advise to hardwire anything. Please either use an external Power Supply that you can order from a reseller or a PoE Power Injector.

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

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Message 2 of 4
Occasional Visitor

Re: Soundpoint IP 331 - PoE Pins?

I tried using a 24V PoE injector over a regular Cat6 ethernet cable, but the phone would not power.

I used the same 24V PoE injector to power the phone through the DC Port and it worked.



I got the phone for $4.19 (without stand) from a goodwill, maybe there is something wrong with the PoE abilities?

Message 3 of 4
Occasional Visitor

Re: Soundpoint IP 331 - PoE Pins?

I checked and the injector was sending 24.5v down blue, blue/white, brown, brown/white wires.

Message 4 of 4