 24 pin cellphone unspecified special connector at the mobile phone (keyboard DOWN) ? | | Pin | Signal | Description |
| 12,19 | GND ? | shorted |
| 13 | Tx | |
| 14 | Rx | |
| 17 | GND | at least in SKY 5100-5400 |
| 18 | Ring | at least in SKY 5100-5400 |
| 20 | RTS | at least in SKY 5100-5400 |
| 23 | CTS | at least in SKY 5100-5400 |
| 24 | DTR | at least in SKY 5100-5400 |
| 21?,22 | Vcc | shorted |
Source:www.pinouts.ru
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