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P25 : usb headset

 QuestionP25 : usb headset

I use a new P25 with the latest firmware 4.0.3
I would like to use a USB headset with a microphone (Plantronics Audio 626)
I connect it, Windows installs the correct driver, but when I test it I have the following error message "Failed to play test tone"
The microphone works correctly
Thanks for your help


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