A teacher as a facilitator vs. the traditional teacher role?

How does the role of the teacher as facilitator differ from more traditional teacher roles?
The traditional role of a teacher in a classroom is a teacher-centered classroom. The teacher is the possessor of knowledge and teaching centers around what the teacher has to say. Traditionally a teacher is supposed to have all of the answers. A teacher who acts as a facilitator prompts the students in certain directions and lets the students discover things. Questions are asked by the teacher and room is given for student ideas.