26-01-2010, 11:27 AM
i am a final student and need full documentation of "sms through landline"..........
plz help me......... my id. is gemininiki[at]gmail.com
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sms through landline
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i am a final student and need full documentation of "sms through landline"..........
plz help me......... my id. is gemininiki[at]gmail.com
27-01-2010, 02:21 AM
SMS through Telephone using AT89S8252
This system can transmit message or text through ordinary Land Line Telephone from one end (source) to another end (designation). The tecnology used is the DTMF(Dual Tone Multiple Frequency). technology. The system has two sections one for editing the text and to transmit the edited text and the other section consist for receiving the text message.There are several steps for this project:
* DTMF decoding/Encoding process
* Ring sensing
* ON/OFF hook detection
* Displaying the message in LCD
The microcontroller controls the entire system . The full description and code can be got from this link:
http://8051projects.info/forum/showthrea...89S8252%29
This system can transmit message or text through ordinary Land Line Telephone from one end (source) to another end (designation). The tecnology used is the DTMF(Dual Tone Multiple Frequency). technology. The system has two sections one for editing the text and to transmit the edited text and the other section consist for receiving the text message.There are several steps for this project:
* DTMF decoding/Encoding process
* Ring sensing
* ON/OFF hook detection
* Displaying the message in LCD
The microcontroller controls the entire system . The full description and code can be got from this link:
http://8051projects.info/forum/showthrea...89S8252%29
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