8. The method of claim 7 , wherein a hierarchical, bisecting K-Means algorithm is used to perform the clustering.
7. The method of claim 1 , wherein identifying the N most common IVR state sequences comprises: creating N clusters of call sequences, wherein calls with similar IVR state sequences are grouped together and wherein N is greater than 1; from each cluster, selecting a state sequence that is closest to the center of the cluster; and using the selected state sequences as the N most common IVR state sequences.