connector or cable wiring scheme Wiring for the nokia 2.5mm 4-pole headset socket of Nokia 1100, 1101, 1110, 1600, 2100, 2300, 2500, 2650, 2652, 3210, 3310, 3330, 3410, 3510, 3510i, 3650, 3660, 5210, 6030, 6060, 6510, 6600, 7280, 7380 7650, 8210, 8310, 8800, 8850, 8890, 8910, 8910i cell phones (except some smartphones)
4 pin 3.5mm
(2.5mm) plug connector at the headset cable (2.5mm jack used)
| Pin | Name | Direction | Description |
|---|---|---|---|
| 1 | Tip | OUT | Speaker + |
| 2 | Ring 1 | IN | Microphone + |
| 3 | Ring 2 | OUT | Speaker - |
| 4 | Sleeve | IN | Microphone - |
Notes
- The answer/end button should be connected across the microphone connections.
Nokia 3210 handsfree / headset schematic
===Nokia 8210 handsfree / headset schematic==
Speaker is 30 Ohm