Airtel broadband wifi connection is decent when you have good signals. But good signals are something very rare to this network.
I have launched complaints several times with airtel about the problem that I am facing with this connection.
But every time they say that they will solve the problem at the back end and they never come home for a visit. As a result the problem never really resolves. The speed drops below any workable level frequently. If you want to have a broadband connection I would recommend you to go for MTS. Its far better.