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IVR (Interactive Voice Response) interfacing with microcontroller (8051)
Moderators: Ajay Bhargav, Arun Kumar V, pdi33, Shailesh NAYAK, ۞ TPS ۞, shyam, sashijoseph, ExperimenterUK, DavesGarage, majoka
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logistic
Mon Mar 30 2009, 02:44AM
Registered Member #15386
Joined: Mon Feb 16 2009, 09:21AM
Location (Home Town): Pk
Posts: 70
 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.
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Ajay Bhargav
Tue Mar 31 2009, 04:21AM
Rickey's World Admin


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Joined: Fri Feb 24 2006, 07:56AM
Location (Home Town): Punjab, India
Posts: 12592
 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.
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logistic
Tue Mar 31 2009, 12:48PM
Registered Member #15386
Joined: Mon Feb 16 2009, 09:21AM
Location (Home Town): Pk
Posts: 70
 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 ?
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ExperimenterUK
Tue Mar 31 2009, 06:20PM

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Joined: Tue Aug 05 2008, 07:15PM
Location (Home Town): Manchester
Posts: 2855
 GSM modules *are* modems.

Most have pins to allow connections to microphones and speakers
so they can act as telephones if wanted.
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logistic
Wed Apr 01 2009, 12:15PM
Registered Member #15386
Joined: Mon Feb 16 2009, 09:21AM
Location (Home Town): Pk
Posts: 70
 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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