rajprj81

Hi all....!!! I have connected a Benq G32R GSM modem to my laptop using RS-232 interface. I have already tested the modem by sending AT commands through Hyperterminal and its working perfectly fine. Now in our application we have to read data from one RS-232 port and send sms using AT commands through another RS-232 port. We are able to read the data using labview but unable to send AT commands through labview VISA. Can you please guide us with the procedure to send AT commands using VISA. When we write the commands we are not getting any response(OK) back. I mean the commands are not getting implemented. awaiting for help. thanks raj.