First Round - HR Round - HR calls and tells about the Hiring process and describe the JD shortly
Second Round - Technical Round [Telephonic] - Tries to find out the Basic Knowledge
Third Round - Technical Round [F2F] - Fully technical , Interviewer tries to find the in depth knowledge of technology
Final Round - HR Round about Job description and Salary negotiation - salary discussion and offer Offer letter and confirmation of expected date of joining in the organization