We are using RC7620 to make a phone call using ATD… When the callee answers the RC7620 does not return the CONNECT response via UART interface. We need to send another command AT to the module to get back the CONNECT response. However, when we disable the CMUX mode using the command AT!MUXMODE=0, …

UART AT Command hang when make a phone call

jyijyi July 25, 2021, 12:26pm 12

does problem happen if setting AT+KSLEEP=1 ?

Problem with AT Command