I got to know about the interview from a consultancy one day before, so I didn't have enough time to prepare. Initially the consultancy people took one round of telephonic interview of which I was not aware of. I anyhow was preparing for the interview from past 2 weeks so was an easy task to revise in one day. The interview went fine. It was a panel of 2 people. They asked me some basic oops questions and other telecom related questions. I was able to satisfy them with my answers.At the end they asked me to design two algorithms, which with some difficulties i manged to design successfully. Immediately after that i was called for HR interview. Two days after that I got the call that my selection in confirmed.