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Where can I find some low level information about old days PPP protocol modems, over serial line? I have a embedded WiFi SOC that I want to use from linux as a modem, so 'connect' via AT commands, configure, etc, then relay all TCP packets transparently. I know it can be done since a lot of GSM modems perform this (via AT) but I cannot find a useful start how to implement in SOC (a lot of garbage from google). Episcopal Book Of Occasional Services Pdf on this page.

I mean what will be the logical flow so linux drivers can see a standard modem. The Carter 3 Rapidshare Download Link. All Tv Channel Software Download. I also presume that I can skip the PPP part and redirect somehow (make a virtual adapter in linux side) that will exchange packets over serial line in a proprietary format, eventually helped by flow control and or other GPIOs tied to my SOC but I feel that I am re-inventing the wheel. Thanks for suggestions. You'll find the original PPP RFC documents listed at the bottom of this I would start by reading is one of the better documented/supported lightweight implementations of PPP. (actually full TCP) However, the source is still several thousands of lines and in my opinion daunting to a newcomer. It's easy to get to work on mbed-supported boards AFTER following the instructions on how to set up PPP networking on Windows. (Did not test it on a Linux box) Depending on your application, it might indeed be simpler to define your own protocol to transfer data between your WIFI SOC and a Linux box.