Originally Posted by
BYOB
That's generally not a good sign. Sorry to be the bearer of bad news, but everyone (10+, including myself) that have had the phone interview were offered the interview at the end of the phone call. It's possible they may call you back to offer the interview, but I don't recall anyone (and I could be wrong) receiving an interview offer after the phone call if they weren't offered the interview right away.
I know several people that were not offered the face to face after the phone screen. They were all called back with in 2 weeks and offered the Interview. They have since been hired. All it means is there is something in your background they need to get a second opinion on. Example - DUI, check ride failure.