Major Indian Broadband market players viz. Airtel, TataIndicom and Reliance now have an asterisk (*) [Conditions apply] on their unlimited Broadband plans. Following the metered broadband trend from International players, they are also providing unlimited Broadband attached with
“Fair Usage Policy“ [..lol...]
Under this scheme if you violate their policy, your speed may be reduced to half or you have to pay some more bucks. Worse, they may terminate your connection.
There are a lot of threads you can find on Broadband forums regarding this step, so be aware and use the BB carefully respective to your ISP 
.
You are not going to get all that you are paying for. [Unfair policy]
Check what unlimited means 
TataIndicom Unlimited Means
Speed Limit
64 kbps 5GB
128 kbps 20GB
256 kbps 45GB
384 kbps 70GB
512 kbps 80GB
If you go beyond your limit, you will get a call from Tata Customer Care ( ) and they will suggest you to reduce the usage or upgrade to a higher plan. If not, they will terminate your broadband connection.
Link: TCISL Fair Usage Policy
Airtel Unlimited Broadband Means
Speed Limit
128 kbps 10GB
256 kbps 15GB
384 kbps 20GB
512 kbps 25GB
If you cross this Fair Limit your speed will be reduced to half for rest of month with out any intimation.
So, what do you think… unlimited means ???
Link: Airtel Fair Usage Policy | Check the Reliance unlimited broadband features also
You can use BSNL unlimited plan. It is really “unlimited”.
I only get the download speed of 30kbps while i have unlimited bsnl broadband plan (512 kbps)
Update : Timer Warner metered broadband has been rejected by public.
http://www.theregister.co.uk/2009/04/16/time_warner_metered_billing_testing_stalled/
@Mayur
We can use BSNL, but what if they also apply the same
@Gautam
What is BSNL will also apply the Fair Usage Policy,
and about this post i would like to say ,Our Indian Companies are just following the others. They should know that International users are getting higher and consistent speed.
Talking about the Broad Band plans, the cheap and best plan is BSNL Home 500C
The good part is that there is no other rent except Rs.500 plus you get 175 free calls on landline and Night Unlimited, which really means Unlimited and the download speed goes upto 256Kbps.
@Prateek
BSNL has so many options, and still giving the unlimited.
But the Problem with it is variation of speed and weak customer care
@Gautam
I think you made a typing mistake or have a wrong idea. You probably have 30kBps download speed. And your connection speed is 256kbps ( i.e. 32kBps). The connection speed is measured in kilobits per second where as the download speed shown to us ( by many browsers or download managers ) are kilo Bytes per second. And I guess you know the relation between bit and byte.
the 600combo is the best deal from bsnl with 2.5gb free and night (2am-8am) unlimited along with 250units free from landline with no monthly rentals. even today morning i downloaded songs to my pc with an amazing speed of 234KB/sec (kilobytes/second. only takes about 20-25 seconds to download a 5MB song. amazing speeds.
hey suman i have the same plan as u.You download films with torrents after 2 a.m?what speed do u get?and it doesnt get charged right?
Btw, the unlimited speed for BSNL is 256kbps not 512kbps.
BSNL is the best among unlimited indeed, but their speed is mediocre. However, you’ll be habited in few months with the speed.
Even I am on BSNL and I think I took a wise decision by choosing it
Though, its unlimited plans comes with a very slow connection to download stuff, still its good that it doesn’t cheat customer’s by saying “UNLIMITED” and providing limited facility like other big corporates in India do..
Like Prateek said, 500C is the best available offer in the market. No other telcos offer you with such a wonderful plan. But if you use internet unlimitedly, BSNL is the best…. but in some areas, BSNL connection cannot be obtained instantly….
@Pavan
I do agree with you, In my locality there is not availability for BSNL so i have to take Airtel.
But it is also true BSNL is not giving consistent Speed
I was not aware of it, usually I though they mention the max download limit. DIsclaimer warning is an official ways to cheat.
Sad thing in India, now we have 100 mbps Internet connection from Tata, but again the bandwidth cap.
What’s the use of such high speed broadband internet connection when we can’t use it for whole month?
Better they should rename their plans as 10GB HUNGAMA, or 10GB BONANZA rather using the word UNLIMITED. These people are creating new meaning for words in english..
HECK !
@ Robin
You are right , the best part was even I was not aware of it. never bothered to check there *T&C mark.
Currently using MTNL 512 Unlimited Combo Plan. Gives download speed of 58Kbps and 500 free calls from the landline. Charge @ Rs.1299 pm
Earlier, was on 256 Unlimited getting 28Kbps download speed @ Rs.599.
I don’t think MTNL has any such Fair usage policy. Anyone?
I already know bout this..
Hey is this applicable only for Fixed Broadband users or even for Wireless Users too??
I use Tata’s Plug2surf and i am currently under an offer which lets me have “unlimited” usage for 3 months..
Currently in the first month.. So have no idea on the usage policy.. Will sue them if they apply this to me..
B-)
i have reliance data card.i got upto 25kbps download speed late night.it is very slow sometimes but what else you want in 300rs plan.
Hi
i use BSNL 500 plans for past one year. it is really good at night.Day time it’s s…l….o…w
MTNL rocks unlimited means unlimited
i download atleast 100 gb per month at the speed of 752 kbps
bsnl unlimited plan seems quite useless i got a bill of whooping rs10000 for download 10gb in a month(i wonder if 10gb is 2mch??????)what should i do