A roll for use in an air press assembly of a papermaking machine has a pair of ends associated therewith. A first transmission apparatus extracts only a data section of a LAN signal that is received, and accommodates the data section in a digital wrapper signal. The copolymers are produced by polymerizing at least one high reactivity polyolefin and at least one vinyl monomer in the presence of a free radical initiator. The predicated instruction is dispatched to an execution unit for execution. A charge transport material comprising such polymers is useful in electroreprographic and electroluminescent devices. The method monitors the silent time of the media gateway controller message by providing an Inactivity Timer or a general timer and a message receiving flag on the media gateway independently, and sends a Notify message to the media gateway controller so as to trigger the media gateway controller to return a message indicating it is in normal status.