we use Ericsson 's GM29 modem on linux, and communicate it through minicom utility.


the configuration is

1 change serial port config on minicom.
     serial device : /dev/ttyUSB0      --note:cause we don't have any serial port on computer,we use USB to Serial device for connection device.
      BPS/par/Bits:   115200  8N1
     hardware control: NO

others use default.
then enter minicom. you'll receive welcome note:)

2 we found some problems with unsolicited and unreadable words on screen irregularly.
   after google from internet, I found that maybe the USB2Serial device have interference(for to wireline of the device is too long) cause the problem. change another one fix the problem.