i’m driving a M66 modem module on a custom board.
I can connect and establish PPP connections successfully but sometimes i encounter this problem: when the connection drops and the PPP firmware stack is deinitialized, i close the call by using the command:
AT command: ATH0 AT response: ATH0OK
but when i try to restart the procedure with a new call:
AT command: ATDT *99***1# AT response: ATDT *99***1#+CME ERROR: SIM not inserted
So i can go on and i must power down the module and restart all the procedure.
Thank in advance for your help guys.