Need help getting audio in and out of SIM900

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stoil
Posts: 2
Joined: Thu Jan 10, 2019 4:48 pm

Need help getting audio in and out of SIM900

Post by stoil » Thu Jan 10, 2019 4:52 pm

Hello,
I can call/receive call but have no sound. I found commands like AT+QAUDCH=1 to switch channels, AT+CHFA etc, etc but shield always returns ERROR;
Many commands work and many don't. Yesterday when I plugged the earphones for the first time, I could hear the tone when receiving a call with without any commands.
shield is SIMCOM SIM900 Shield with the pink and green audio inputs.
Regards :)

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CircuitSmarts
Posts: 13
Joined: Wed Jan 30, 2019 8:42 am

Re: Need help getting audio in and out of SIM900

Post by CircuitSmarts » Wed Feb 06, 2019 11:28 am

Hi,

You don't need any specific command for turning ON and OFF the audio IN and Out. What output speaker are you using with SIM900?

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