I'm working with a cellular XBEE for 3G connection and transparent mode by using Linux and serial port.
When I connect the device it seems to not connect and AI(Association indicator) is always giving 0x23. But when I put the SIM card in a mobile phone it connects to internet and then if I put again the SIM in XBEE device and there is not problem to connect, and it works perfectly.
But after a couple of days not using the device, the issue reapears and it cannot get the connection and giving again AI 0x23, and I have to repeat the process of inserting the SIM in a mobile phone to get connection.
I'm not sure what is the source of the problem. Does anyone know if this is related with the SIM card or the device initialization with XBEE, or something else?
Thanks in advance.