I am working on a Q2406B. I have been trying to setup GPRS. Although I can succesfully subscribe to GPRS after +WIND:4 using
retVal = adl_gprsSubscribe ( GPRS_Handler );
I cannot setup GPRS by
setupReturn = adl_gprsSetup ( 1, SetupParams);
setupReturn is ADL_NO_GPRS_SERVICE.
Also when I use, at+cgclass? or at+cgclass=?, +CME ERROR: 3
is returned. I mean, I cannot change the GPRS class of the product.
AT+CGATT=1 also returns +CME Error : 3 (operation not allowed)
What could be the problem?