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GSM 0710 Multiplexing

Question asked by Damien Gotfroi on Aug 18, 2014
Latest reply on Aug 27, 2014 by Damien Gotfroi



I use an IMX28 to communicate with a GPRS modem SIM900.

I would like to be able to send AT commands during data session (ppp), so I intend to use the GSM 0710 standard to multiplex the serial port.


I think the option to check in the kernel menuconfig is "GSM MUX line discipline support", isn't it ?


But after the compilation, how can I multiplex my serial port on my board ? What are the commands to enter?


I use Yocto + bitbake with kernel 3.12.


Many thanks and best regards.