A pair of conveyors having a pair of launch conveyors and at least one pair of drive conveyors is disclosed using modular flat belts. These are particularly directed towards the management of configuration data in disconnected remote devices of a host system. The first reflective surface and the second reflective surface process the input signal according to a dispersion function that is based at least in part upon the incident position of the input signal. To overcome this problem the amplifier is further provided with further offset cancellation means which are for example formed by a further pair of choppers. The EPC sends the NAS message to the UE through the S-eNB, if needed.