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04/27/10 15:55
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#175449 - DTMF Tone detection in Sim300+EVB
Dear seniors,

I am trying to detect the DTMF tone when someone calls to my sim300. I read in some other posts that there is no way to directly detect the tones and find out the key presses. I have to use a DTMF decoder like MT8889.

Another thing I also what to detect my location using the cell registration ?

I am sending the command

AT+CENG=2(setting to engineering mode)

i get
+CENG : 0 "00,73,32,0,???,??,??,???,??,??"
and 6 other similar lines.

My SIM300 is in text Mode ??

List of 5 messages in thread
TopicAuthorDate
DTMF Tone detection in Sim300+EVB            01/01/70 00:00      
   a blast from the past            01/01/70 00:00      
   GSM is not good for DTMF [Off-Topic]            01/01/70 00:00      
   thanks andy            01/01/70 00:00      
      Off-topic            01/01/70 00:00      

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