Pin |
Name | Direction | Description |
---|---|---|---|
1 | Tip | Speaker + | |
2 | Ring 1 | Microphone + | |
3 | Ring 2 | Speaker - | |
4 | Sleeve | Microphone - |
Nokia 3210 handsfree / headset schematic
Nokia 8210 handsfree / headset schematic
Both schematics made by Goran Jurkovic