My colleague and I are developing the GPRS MODEM market for a module suitable for use with embedded Linux. During market testing, we see that some manufacturers emphasize that their modems include an integrated TCP / IP stack.
This makes us wonder: when we use embedded Linux, which already contains the TCP / IP stack and connects using PPP, will it use the stack included in GPRS MODEM?
My current assumption is that the stack is enabled for use with a tiny microcontroller OS that does not provide its own stack. In addition, some of the modems allow you to run small applications in the modular MODEM processor, which could explain the built-in stack ...
So: is the TCP / IP stack provided by GPRS MODEM redundant when using it with the HL OS, or am I missing something?
This is almost certainly superfluous in your use case.
Most cellular modem products are shortened versions of products designed for use on mobile phones. Obviously, the phone application requires a TCP / IP stack, as well as a whole bunch of other features.
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