NWK200: How To Connect To The Modem

Connecting to modem via PuTTY (Windows)

1. In the Device Manager, find out which virtual COM the modem is attached to.
   • Open the ‘Modems’ category fly-out
   • Right click the Sierra modem entry
   • Select properties. The port number [n] is listed at the top of the main page
2. Open PuTTY
   • Select the Serial radio button in the main window
   • In the <<connection>> box, replace COM1 with the COM[n] from the modem properties
   • Set the baud rate to 115200
   • Click Open.
3. Make the modem “echo” back the commands. In the terminal window, type:
   • ATE1 and press Enter. It is possible that no text will be displayed until the command is executed
4. If Windows 7 is installed, change USB communication mode from QMI to MBIM with the following commands
   • AT!ENTERCND=”passwd” <–where passwd is replace with actual password
   • AT!USBCOMP=1,1,100D
5. User can now send any AT commands necessary

Connecting to modem via minicom (Ubuntu)

1. From Ubuntu terminal

   sudo minicom -s

   • Serial port setup
     • Press a – change name to ‘/dev/ttyUSB2’
     • Press g to change software flow control to YES
     • Exit (this will drop you to a new shell)
   • Make the modem “echo” back the commandes. In the terminal window, type:

     ATE1

2. User can now send any AT commands necessary