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4 pin 3.5mm (2.5mm) plug connector layout
4 pin 3.5mm (2.5mm) plug connector
Pin Pin
Name		 Description
1 MIC Mic (+)
2 AUDIO Audio (+)
3 GND MIC (-)
4 GND Audio (-)

I had dificulties finding this pinout for making my own headset from a Nokia cellphone.

 
Pinout status: +5 -0
According to 5 reports in our database (5 positive and 0 negative) the Panasonic KX-T77xx Headset Mono pinout pinout should be correct.

Is this pinout
NO DIY devices
Panasonic KX-T77xx Headset Mono pinout visual pinout:click to enlarge
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