The phone interview was really just to get an idea of your personality and to see if you could come off well over the phone, since about 95% of the job is making cold calls everyday. Be prepared to answer the usual questions like "Tell me about yourself" and "why are you interested in sales?" At the in person interview, you will speak with a few different people, and will be expected to lead the conversation and ask a lot of questions. "Do you consider yourself a competitive person?"