jay Profile Topics Started Replies Created Engagements Search replies: Forum Replies Created Viewing 16 post (of 16 total) ← 1 2 Author Posts March 13, 2013 at 5:50 pm in reply to: interfacing of gsm module using interrupt #9308 jayParticipant hi there. it s not possible to interface mcu with gsm-300 at tx pin. because gsm module only reply after you send command at rx pin. you shoule use ringer out put for inturrept purpse . if possible tell me in briff. Author Posts Viewing 16 post (of 16 total) ← 1 2