BSNL to provide Unlimited internet Plan @250/p.m
for its CDMA 2000IX based WLL connections.
However this plan is applicable only to the rural areas...
Also it is experimental basis for the period of one year initially...

here is the news : Bharat Sanchar Nigam Ltd- Latest News
CDMA 2000 1X details are here : Bharat Sanchar Nigam Ltd- Latest News
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it appears that it is not truly unlimited for just Rs. 250/-
per month . It has usage charges of 0.60 Rs/min during
peak hours and 0.20 Rs/min during off peak hours .

And it is just an alternate access to Internet connection ,
as BSNL's broadband is not available at most of the rural
areas ...