 18 pin unspecified cellphone special connector at the cellular phone (connector is same as Samsung SCH A-300) | | Pin | Signal | Description |
| 1,2,3 | shorted | for Alcatel 531 |
| 5 | Tx | may be RX |
| 6 | Rx | may be TX |
| 8 | R=48KOm to GND | for Alcatel 531 |
| 13,14,15 | GND | |
| 16 | +5V | for Alcatel 531 |
Source:www.pinouts.ru
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