It was a technical interview for a co-op position. The interview was based on my response to a job that was posted my university. Multiple interviewers asking questions about technical skills. Interviewers were pleasant and the approximate run time of the entire interview was about thirty minutes. They allowed questions at the end.

It was a very direct phone interview. He asked me 3 very obscure questions (which I will leave out in case they want to ask it again). By obscure, I mean they were very thought provoking. I actually thought they were good questions. However the interview lasted 30 minutes and I was not called on site for another interview.