namo eng_ahmedasd What devices are you using? And what is your final goal - what do you want to achieve with device's commands?
eng_ahmedasd namo GV350MG I am testing stage for new device, and i want to send to device customer commands Like serial port data send For example "AT+GTDAT=gv350m,1,0,Test Command to Serial port 1,,,,,FFFF$"
namo eng_ahmedasd Yes, this is possible and you should use the approach described in the link I gave you above. Or just send SMS to the device. No easier way.