I'm able to send AT commands to GSM modem,
but i am not able interface my 8051 to GSM model.
can i get sample inerfacing code for 8051 micro controller.
I wrote AT-commands to send DTMF signals through GSM modem.there is schematic diagram how to connect 8051 to GSM modem (Wavecom wismo) on http://www.taptronics.com
Urip