Actually his assumption was pretty good. UT does not outwardly state that a secondary = interview, but everyone that gets a secondary does get an interview. However, you should definitely NOT call to schedule an interview. They will send you an email when they have scheduled you and you have an opportunity to request a different date if that time is inconvenient. At any rate, if you got a secondary, then you will definitely get an interview so calm down and hold tight. Last year, some people waited 4+ months from the time they got a secondary until they got an interview in April (and some of them did indeed get in as well).