Cellular Modem not Responding

I am trying to connect to my cellular modem on Linux. I connect it through USB and the device appears as /dev/ttyUSB0. Using minicom, I set the port and baud rate then connect to the device. However, when I connect I get a weird output.

I turned on echo in minicom (crtl+a e) and when I try to enter a newline, this output just repeats. I also cannot get a response when issuing AT Commands.

What does this output mean? Any other suggestions on what I can test?

Thank you.

• When you connect the USB modem to the PC, open the console and type: dmesg | grep tty. Could you let me know the answer? This is to verify where the modem was connected, I currently have one and it connects as /dev/ttyACM0
• I check that when using the Minicom instead of entering the program and then configure parameters it is preferable to access it directly with the parameters already offered, for example: minicom -D /dev/ttyACM0 -b 9600 Being the -D for "device" and -b for "speed" in (baudios)