interest rate futures

I just came to know that NSE offers interest rate derivatives for trading. I am looking for more information on these derivatives, like liquidity, expiry, underlying for the derivative, fundamentals affecting price, etc. Any information from someone who has experience in trading these would be...

IRF had stunning debut yesterday on NSE with 3200 crores volumes... Anybody trading this yet? What are the specs, what margins, what brokerage? I think this instrument will be amazing for scalpers. Anybody with any bright trade ideas?