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gsm to 8051

I am interfacing gsm sim 900 with At89c52.I hav gone through all the AT commands.I have tried dem on Hyperterminal.I want to know how do we send a message from our mobile device to gsm modem and how to transmit it from modem to microcontroller.What commands to use!?? I have tried sending msg from pc to mobile..Pls help

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0 Westonsupermare Pier over 11 years ago

This relates to Keil products how exactly?

You could send an SMS from a mobile phone to the modem I you knew the phone#. On the modem you'd need to register on the network, and use the AT commands related to the SMS handling to observe if a message has been received, and to read that message. You'd need some basic code to parse the response from the AT commands to extract the message, and calling number.
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0 Westonsupermare Pier over 11 years ago

This relates to Keil products how exactly?

You could send an SMS from a mobile phone to the modem I you knew the phone#. On the modem you'd need to register on the network, and use the AT commands related to the SMS handling to observe if a message has been received, and to read that message. You'd need some basic code to parse the response from the AT commands to extract the message, and calling number.
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