After being contacted via email, my first HR phone interview was within a week. This preliminary interview was just to assure the company I had the credentials I had claimed. The second phone, a conference call, interview was not long after. The two interviewers asked questions regarding my previous work and general knowledge questions.
Overall, the interview was a positive experience. However, two weeks after the interview, I contacted HR again and was told there were no results yet. Another two weeks have passed with no indication.