connector or cable wiring scheme
4 pin 3.5mm
(2.5mm) plug connector
| Pin | Name | Description |
|---|---|---|
| 1 | MIC | Mic (+) |
| 2 | AUDIO | Audio (+) |
| 3 | GND | MIC (-) |
| 4 | GND | Audio (-) |
Notes
- I had dificulties finding this pinout for making my own headset from a Nokia cellphone.
Panasonic KX-T77xx Headset Mono pinout
