hi.i implement the sample source code that has been provided by cytron with the gsm modem that is GSM Enabled Smart Home.I manage to connect the circuit with the gsm modem.problem is that when i make a call to the gsm modem,it was a success but the program return an ERROR dislplay at the lcd>anyone can help?
i have connected the modem with the computer using serial communication and it works out.after i modified the coding it also work but why does the modem did not respond to the command.the modem did not respond with "OK" and ">".