An apparatus for use in a communication network comprises a state machine capable of transitioning between a plurality of states. The plurality of states comprises at least two concurrent states. The state machine operates in the at least two concurrent states concurrently. Each of the concurrent states may be associated with a task. At least a portion of the task associated with one of the concurrent states may be performed concurrently with at least a portion of the task associated with another of the concurrent states when the state machine operates in the concurrent states.