I am connecting from my PC to a Q2687 module vial TCP socket using normal usb modem.
sometimes the sending function in my application succeed but I see nothing coming to the module, especially when the module is on another GSM cell.
I understand that TCP protocol is reliable that if data doesn’t reach the destination it must report to the sender to send it back or timesout. Is this also the case for TCP over GPRS ?
in other words is there a case where data could be lost in a TCP socket connection and the sender don’t know about it?
Because I don’t know if this problem is with the module’s firmware or the the GPRS network.
waiting for reply…