The board with the MR32 controller is connected (MAX 232) with the GSM MODEM
over a normal RS232 connection. Only RX, TX and GND is needed.

The program can save:
8 different numbers (receivers of SMS)
8 different sms texts
into the flash of MR32

example of a number text:
"3336541879 mister rossi dig01 sms03"
If the Input named dig01 is pressed the SMS text nr. 03 will be send 
to the number 3336541879. The name is only optional.

If the input remains active no other SMS will be send.

The receiver numbers and the sms texts can be changed over SMS from
two superusers.

There is also an administrator number. 
It can change also the numbers of superuser.
The administrator can not be changed, this number can only be changed in
the source code.