I'm using BSNL broadband from past 5-6 months and it was working fine. But from past 10-15 days it stopped working and I've noticed that when my area electricity goes off, it works awesome on inverter and i don't know why it doesn't work on electricity. Is there any voltage issue or something else? Should i change my modem? Line man says there's no problem in line and its clear from any electric wire. My landline works fine, also my modem shows dsl but no internet.