The speed stays constant unlike other broadbands. I was promised the speed of 5mbps. The speed always stays at 5mbps and does not go up or down unlike many other broadbands. Airtel and mtnl offer you lets say 4 mbps a month but in that case the speed will always fluctuate..
Sometimes it comes down to 1 mbps. The service is not good. I have been calling tech. support for the past 4 days and each and every day they told me that your problem would be fixed in 24 hrs. They added that the engineers were off the field. So basically, Their service and support is awful but the connection and speed stability are pretty awesome.