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Does anyone have firmware for SIM900 which can decode DTMF and have whiteList function?
I have found only one firmware for DTMF decode (1137B08SIM900M64_ST_DTMF_JD_MMS), but it has not got whiteList function. Does any one have firmware that have DTMF and whiteList function, please share me. Thanks
I need to use SIM900 to decode DTMF. Any one know how to do, please tell me. I have try many firmware version (B06,B08,B10,B11) only receive "ERROR" when I type AT+DDET=1
Thanks
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