First -- This modem has a bug. Some wont see some (very popular) networks and the company refuses to fix or admit the problem.
This's a one of a kind modem. It has a built in NAT; so you don't have to dial it internally everything is in the web interface at 192.168.0.1.
Very good design.
For the installation, remove usb_modeswitch; otherwise this wont work.
And that's it. In generic distros, you'll get a new network interface on plugging; then operate the modem through 192.168.0.1.
I've not seen any other modem like this in the market.