I brought an esp8266-12, it works at 115200 baud rate. I sometime connect it to arduino uno to work for some projects. It would be easy if I connect esp8266 with arduino at 9600 baud rate. The AT version is 0.25. I googled and saw the AT command set documentation it had a command to set baud rate. It was like

```
AT+ UART_DEF=<baudrate>,<databits>,<stopbits>,<parity>,<flow control>

```

But the problem is I don't know what these parameters are and how to set the parameters so that is works at 9600 baud rate with arduino.