how microcontroller 8051 interface with gsm modem | how microcontroller 8051 interface with gsm modem September 3, 2015 at 12:16 pm #13261 Prabakaran P MParticipant Hi Babu Kudal Please refer these links, http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code http://www.engineersgarage.com/microcontroller/8051projects/gsm-interface-8051-microcontroller-circuit-code http://www.engineersgarage.com/microcontroller/8051projects/interface-gsm-module-8051-microcontroller-circuit-code