| Pin | Signal | Description |
| 8 | GND | |
| 13 | DP1_TXD | |
| 12 | DP1_RXD | |
| 11 | DP1_CTS | |
| 7 | DP1_DTR | |
| 9 | DP1_RI | |
| 6 | DP1_RTS | |
| 10 | DP1_DCD | |
| 5 | GND | |
| 3 | DP2_RTS/ (SYNC | |
| 14 | DP2_TXD (DIN) | |
| 4 | DP2_RXD (DOUT) | |
| 2 | DP2_CTS/ (CLK) | |
| 15 | Vbatt | |
| 1 | Vext DC |
QCP-3035 with data cable TXDTA0C01 4 = Blue = rx, 5 = Orange = tx, 13 = Yellow = gnd on phone handset connector. On PCB of USB converter 2 = Orange = tx, 6 = Blue = rx, 9 = Yellow = Gnd. 3.3V TTL Serial
правильная
с ошибками