What is the GSM module???

CONTENT:

I have consulted with sir Razif, lecturer from Telecommunication section. he has explain to me how does GSM works. And I completely understand it...

then he ask me to refer to this link http://www.myduino.com to survey how much GSM module n the functionality.



                               

                                                                     GSM MODULE


OBJECTIVE:

1.) To know more about GSM system  and where to buy it
2.) To know whats important part to be consider in election of GSM module