Hi Kishore,Hope you will find | Microcontroller › 8051 › doubt in 8051 › Hi Kishore,Hope you will find January 28, 2014 at 5:13 am #10897 AJISH ALFREDParticipant Hi Kishore, Hope you will find this helpful http://www.engineersgarage.com/microcontroller/8051projects/gsm-interface-8051-microcontroller-circuit-code http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code http://www.engineersgarage.com/microcontroller/8051projects/interface-gsm-module-8051-microcontroller-circuit-code