Thanks for the reply…
What I mean by move data is, to and from the Internet. I want to be able to collect log files from devices in the field, and also push configuration files to them. I may also want them to report data routinely for monitoring purposes. I understand that I can not initiate a connection to a cellular modem, so i want the modem to connect to me (or a cloud service) so data can be passed to and from.
Other devices I have looked at have I2C and SPI interfaces, as well as a UART interface, but the only way to control the modem and send or receive information, via the Internet, was to use the UART and an AT command set.
Currently my device does not have an available UART but it does have an I2C bus. If these devices let me control them and send and receive data via the Internet using I2C that would be great. Otherwise I’ll probably need to add an I2C to UART bridge to my device.