Connecting GSM Dongle to Intel Galileo-Gen 2 I have tried to connect a GSM dongle to a Intel Galileo Gen2 board and test the functionality of sending and receiving SMS through it.I know that it is easier to use a GSM shield to do above, but I'm currently doing a project in the way i mentioned above.Basically in Linux, we should know the serial port(like ttyACM0 in /dev directory) correspond to the device to communicate with it(Using AT commands).

but when i tried it in Galileo board it doesn't show such a serial port.but it detect device because lsusb command shows the device.

does anyone can help me to solve this matter?
Try updating the firmware. I'm not sure if this affects also ACM type serial ports, but the initial version of the firmware was not even creating standard /dev/ttySx, rather some weird proprietary interface.
Luckily this was fixed later on. So, in case you are still running the FW that the board came with, chances are you are having these weird serial ports.