Foreign money

Any one give suggestions to me on below quires

 One of my cline provide service to Foreign company  and raise bill of Rs. 25 core . In this case is it applicable

1. Service Tax
2. Is It Covered in FEMA ACT or any other Act for received money
3. Is it required Permission of RBI or Foreign Exchange Depart and Bank?
4. What about TDS?

Pleases Advise me Urgent