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DEVELOPMENT OF CELL PHONE BASED REMOTE CONTROL SYSTEM: 

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INTRODUCTION

Remote controller
Switching system
Home automation


DTMF Generation

What is DTMF
How it works
Its tone background

DTMF encoding

Using two programmable second order digital sinusoidal oscillators.
One for row tone and other for column tone.
Maximum data rate is 10digits/sec for touch tone signals.

Summary

Successful Authentication With GSM Network
Proper decoding
Password Authentication
Factors to be considered to implement the system