Discussion in "GSM and CDMA Discussion" started by    logistic    Mar 30, 2009.
Mon Mar 30 2009, 06:44 AM
#1
Hello everyone,

Is there a way to interface a GSM module so that the controller attached to it externally (8051) can create an IVR menu.

For example, i call a specific mobile number and it starts a menu. e.g
Please press 1 for system status
Press 2 for system shutdown etc etc.
Tue Mar 31 2009, 08:21 AM
#2
you can make use of voice playback ICs and give o/p directly to MIC In of GSM module. and speaker can be connected to DTMF Decoder. you can easily make such IVR system.
Tue Mar 31 2009, 04:48 PM
#3
You said:

and speaker can be connected to DTMF Decoder. you can easily make such IVR system.


You mean like the input of the GSM module connected with DTMF ?

Are there going to be any modems involved ?
Tue Mar 31 2009, 10:20 PM
#4
GSM modules *are* modems.

Most have pins to allow connections to microphones and speakers
so they can act as telephones if wanted.
Wed Apr 01 2009, 04:15 PM
#5
Can you suggest me any good GSM Module (company) or GSM Handset i could start my experiment with ?

I am very new to this stuff. Also the IC for playback would be greatealy appreciated.

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anybody please help me ,i face problem reading a message and identify the string of read message (8051 uc with sim300 gsm modem i have use)
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@KRIZZA, make the circuit, and load hex file you're done.
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@ExperimenterUK BUILD PROJECT LIKE THIS
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