Problem with Nokia C-12 dongle

I was trying to use a Nokia C-12 dongle on a Dell Latitude E6400 laptop, but after inputting the APN and telephone no., the dongle would not acquire any IP addresses. After putting the dongle in the USB port of the laptop, and ejecting it with the software, the LED turned either green, or blue, but even after inputting three DNS addresses, and a proxy IP address, and port, it does not connect to the network. I've tried using the minicom program to manually give commands to the dongle, and it displays a steady green LED, and says CONNECTED on the minicom screen. There are two devices recorded in the /dev/ folder; ttyACM0, and ttyACM1.
I'm almost sure this is not a dongle problem, and probably there is some AT command that is to be given. Is anyone familiar with this nokia dongle?