there are software to schedule shutdown the system, u can schedule 10 min before 8 am. i can't remember the name. Google it.BSNL unlimited is better, no tension. By the way i m using Numeric 650 va ups. its giving 15 min backup with 22" lcd.
Try to configure Bridge Connection in the modem and use dial-up for connecting internet. Write 2 small batch files (google it) to connect & disconnect the modem. When the connection gets disconnected, every downloads stop and also the remaining time will not get charged (I am sure about that) even if the modem is on. Use Windows task scheduler to schedule running of the batch files.
I am using 500C and scheduled to run the connection .bat file at 2:15 AM and disconnection file at 7:45 AM and I use a Auto Shutdown software that shuts down the PC at 8AM. Using this I have even downloaded 65-70GB in a month without paying any extra bill.
Everything worked fine for almost a year.Fully automated.
2.00 AM PC wakes up from stand by.
2.07 AM Modem restarts
2.10 AM uTorrent starts downloading
7.40 AM Modem restarts
7.45 AM NIC disables
7.50 AM PC turns off.
This system worked for a year and I used to download 70+ GB every month.But recently BSNL made changes to their servers and portals showed excess usage after 8.00 AM (when PC is off and modem is ON).If I fail to switch off modem before 8 AM, huge bills will be waiting.
if PC turn off i.e. download stops, why will the BSNL modem keep downloading?
Actually it doesnt download anything as there is no NIC when PC is turned off.
But it does communicate with the servers and it has been considered as data usage.All these things started when they put a special session at sharp 8.00Am to differentiate Night Unlimited time.Earlier we used modem restart to differentiate sessions.But in new system at sharp 8.00 AM, modem starts communicating with servers and the fake usages are recorded.
I got excess bills due to this reason and complained about this.But they replied me in letter that no such issues found from their side and advised me to change my usage style according to the plan
I cant simply throw off BSNL as I have got 20% off in broadband tariff.So I simply changed my plan to 750 UL.
No more usages and no more excess bills. Peace of mind