Mine was on-site by Michelle Lovell,associate director of admission. She is a very nice lady. The interview lasts about an hour, mostly conversational, with pretty standard questions. She did ask what other schools I applied. Just don't give them the impression that UF is your backup.
I remember that a girl on this site had phone interview. Maybe she can give you more information.
It's been almost two weeks, so I don't remember all the questions. But as I said, they were pretty standard, such as why MBA, why UF, main responsibilities of your job, plan after MBA,any questions for her...
She spoke at normal speed, not too fast. You should be able to understand her. Are you in China or US? She seemed to understand that foreign students might have language problems at the very beginning.