I need a little software able to activate an internet connection (RemoteAccessService) on a modem Huawei E169 or similar (H3G-UMTS) and close the connection through an sms message with a specific word sent to the SIM of the modem itself (I.E.: OPEN CONNECTION | CLOSE CONECTION). I think you should use the AT command to activate and close the connection..
If you need the driver/connection software for the modem I can sent you.
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to establish connection we can use RasDial, to receive sms - at comands, but not sure if its posible to use modem for internet and sms in the same time, as a rule we need to close conection to read any sms!