The invention provides a component selection control system comprising signal output components 2 to 5, signal input components 4, 5, and an amplifier unit 1 having these components 2 to 5 connected thereto. at a first switching point on the rod controller. In one embodiment, the pore region includes two or more chalcogenide materials which differ in chemical composition. This segment is keyed to a corresponding drop probability, which is used to make a packet discardadmit decision for a packet. In one particular embodiment, the techniques may be realized as a method for handling contacts and agents in a contact center system including identifying a first contact available for assignment to a first agent, comparing information about the first contact with information about the first agent, and postponing assignment of the first contact and the first agent based on the comparing.