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AT+DTAM - AT+CFSINIT and AT+DDET

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nenoksl

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Good day, I am using the firmware "1137B08SIM900M64_ST_DTMF_JD_MMS" and would use the commands "AT+DTAM" and "AT+CFSINIT" but the module SIM900 is returning "Error". How do I use these commands?

PS: I also need to use the command "AT+DDET".

AT+CGMR
Revision:1137B08SIM900M64_ST_DTMF_JD_MMS
OK

AT+CFSINIT
ERROR

AT+CFSWFILE=teste
ERROR

AT+DDET=1
OK

AT+DTAM=1
ERROR


Thank you.
 

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