This 600 plan is upto 2Mbps. I always get speeds above 220KB/Sec.
This is great plan for heavy downloaders.
2.5Gb Limit is enough for normal browsing in day time. And in night time from 2AM to 8AM, I download around 4GB of Data. So I download more than 110GB in a month.
All u need is
1. Wake up from Standby Software(to make computer wake up from hibernation automatically after 2AM)
2. Advanced Task Scheduler (to automatically dial into BSNL at specified time)
3. Internet Download Manager (to schedule downloads for auto downloading in queue)
I just put the things to download in IDM, set the time, Hibernate the computer, and go to sleep. 4GB download complete by morning 8AM.