mechatronics 0 Report post Posted August 5, 2008 Hi, I am writing software in Visual Basic 6 for control of parallel port with SMS. Currently I 'm using Samsung SGH-E330n as GSM modem. It is conected on USB port over the serial cable (usb to serial adapter). I tried to communicate with the gsm modem in Hyper Terminal, and it works fine. I can send the message and it's responsing on AT commands. But, I have one problem... When I receive SMS on SGH-E330, the communication blocks. After that it doesn't response to AT commands, until I unplug and then plug usb cable again. here is how I am trying to receive SMS: AT+CMGF=1 (text mode is on) AT+CNMI=1,1,0,0,0 (Modem will now have to response when a SMS is received, it should send to computer: +CMTI: "SM",1 but, nothing... ) when SMS arrives, communication blocks. If you have any idea, please let me know. Thank you very much! Share this post Link to post Share on other sites
