In one embodiment, a method including analyzing a plurality of dialed sequences that are associated with unrouted calls in accordance with one or more candidacy rules, based at least partly on the analyzing, defining one or more candidate dial patterns for addition to a set that includes zero or more dial patterns in use for call control, and performing at least one action which promotes addition of the one or more candidate dial patterns to the set.

In one embodiment, a method including analyzing a plurality of dialed sequences that are associated with unrouted calls in accordance with one or more candidacy rules, based at least partly on the analyzing, defining one or more candidate dial patterns for addition to a set that includes zero or more dial patterns in use for call control, and performing at least one action which promotes addition of the one or more candidate dial patterns to the set.