The invention relates to a method comprising initiating a session from a subscriber terminal, wherein the subscriber terminal does not comprise a specific user identification module, and authenticating the session based on a temporary identification of the subscriber terminal, by using a procedure performing a server authentication and avoiding a client authentication. The optical concentrator is formed from a material filling the entire inner volume of the concentrator and optically transparent for at least one wavelength with which the transmitter transmits. The voltage limiting circuit, which is coupled to the chalcogenide storage element, ensures that voltages across the chalcogenide storage element will not exceed a predetermined value during a read operation. The method and system includes assigning a directory to a next available processor in an ordered manner to allow the next available processor to compile at least one file within the directory. In another embodiment, an absorptive material forms a portion of a torsional arm that supports the oscillatory body.