Generic driver for estabilishing a TCP connection through a SIM7000 GSM/GPRS modem using AT commands
This driver attempts to establish communication with a SIM7000 GSM/GPRS modem using standard AT commands. When the device is registered use authenticate() to enable the data connection and connect() to establish a TCP stream.
Once a socket is open data can be sent or recieved using an asyncronous send/receive interface.
TODO