Changing Baud Rate - Hello world application

I start working with Open AT this morning. I would ask if it is possibile to change the baud rate with the string “Hello world” is sent via Rs232.
I would like to send it at 19200 bps.

Thank you very much

Hi Lorenzo,

If you haven’t figured it out already, the command you need to change the speed is AT+IPR.

Best Regards,