First I received a email scheduling the telephone interview. The interviewer called me precisely at the allotted time. Interview mainly comprised of C++ questions - covering exception, copy constructors, undefined behaviour. There was a algo question regarding finding if two string were anagrams are not. I was giving a step-by-step approach, but the interviewer looked unhappy and he wanted the final answer and he was looking for the precisely the answer he hand in mind. Though he was friendly, he didn't seem to appreciate any "thinking-at-candidate's side".