[Required] SMS gateway in India

Hello all, I am from India and I am developing a online student portal in php for my institution but i got stuck in one thing. The thing is, i have built a announcement board where teacher can announce anything(by typing text there). I just want a sms alert system for the students so that they can get the news/updates instantly via sms. Actually i don't know how to do it. still i keep searching for this but i think expert can tell about this better in this forum. If you can give any hints or idea or code to implement it then it will be great for me. Any advice will be welcome here. Thanks for looking into this thread.

Most cell carriers offer a free service for you to email - ex: [email protected] - which is forwarded to their mobile devices.

Here is a decent-sized list of carrier service emails: http://www.livejournal.com/tools/textmessage.bml?mode=details

It could save you and your school a decent amount of money if one is available for free, since SMS gateways (at least in the US) start to get pricey after the first few thousand you send.

Alternatively you could look into getting a GSM modem (one of the scriptable ones which are really nice), and a prepaid SIM card to put in it. You can automate tons of stuff - hell, even spamming. Here is an example: http://www.glynstore.com/gr2-gsm-gprs-gps-modem-card/

You could also look into grabbing an arduino board with a dip set on it.

So many different options are available to you. Good luck!