I have got some idea.
The real thing is I'm working for a University. When we publish the exam results,
I want to notify the students through SMS. For that I like the students to send an SMS to a number like
and after receiving this SMS how can I reply with the results automatically like
Sub1 <Grade>, Sub2 <Grade> . . .
What are the hardwares, telephone instruments, telephone connections,softwares needed
Thanks in advance