Daily 100 SMS limit By TRAI

India’s Telecom regulator TRAI yesterday issued regulations covering the unsolicited (spam) calls
and text messages communications to subscribers...
Subscribers can now only send p2p SMS’, 

but not buy SMS packs that allow more than SMS’ a day, 

and all packs that allow more than 100 SMS’ per day will not be available for renewal

If someone sets up a modem farm, then they’ll have to pay P2P SMS rates.

Click Here To Know What is P2P SMS
Download the regulations Here (PDF)
 
And the Press release