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Snom PA1 no 3.3v on Pin 3 or 4

Hi,  We have a new PA1 unit, and are unable to read any voltage on Pins 3 or 4 when in the on state.  Could the unit be defective?

To clarify, we are reading using IO 2 connector, using yellow or purple leads, and measuring with the black as negative.

I do get 3.3vdc on VDD (red and black), and we get 12vdc on Brown/black of IO2

Thank you in advance.

1 Comment


I see that this issue resulted in a support ticket and your issue has been resolved. 


Snom Support

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