Nighthawk M1 USSD support

1. Please provide support to dial USSD code via the web management interface. My ISP needs this to check usage figures.

2. My SIM is a pre-paid data SIM with one-year usage period. Please provide an yearly option, or simply an option to disable monthly-based interval (i.e. just provide a simple total) for usage figures.

Now, I need to unplug my SIM from M1, and plug it into my mobile phone to check usage figures by dialing a USSD code.