Hi,
First time I am trying to connect GSM modem (SIM300) with microcontroller. First I am trying to communicate SIM300 with my PC through RS232 port. I am using hyperterminal to send AT commands to SIM300.
Problem I am facing is, my each command is getting echoed back i.e If I type AT<cr> it gives me AT<cr> back. But I think modem should respond with OK.
Can anybody help me why is this happening...?
Regards, Hari
Thanks for response!!!
I am not doubting that sim300 is in error, as it was tested by third party.
I have checked some previous forum, they say module should respond with OK. But as I am only getting echo from the module I have started this thread.