[ubuntu] connecting multiple USB 3G modem from command line.

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http://ubuntuforums.org – I am trying to connect multiple USB 3G modem (two, in my case) in Ubuntu 12.04. I can do it graphically through the Network Manager, but I'd like to replicate the process through the command line. Here is the process that I am trying to emulate. Connect two 3G dongles, both huawei, Model No: E173Bu-1 (Service provider: Airtel) and Model No: E173u-1(Service Provider: MTNL). The connections that I configured shouldn't have "connect automatically" checked in the Network Manager GUI. Now, from the Network Manager GUI, I am able to connect to both of them manually one after th (Hardware)