Apparatus and method for calibration in a multi-antenna system are provided. The engagement can be effected when the revolution of the input shaft and the revolution of the output shaft have corresponded so as to be suitable for the engagement. On the other hand, the receiver determines a receive antenna weighting coefficient matrix based on the received training signals. An optical fiber receiving opening in the housing also extends to the cavity. Thereafter, at least one solder element is placed on each film obtained in this way, at least one conductive member is applied to the or each solder element on its side facing away from the metal film, and the or each solder element is caused to melt so as to secure the or each conductive member to the or each metal film. Whether or not resources maybe allocated to the communication associated with the connection request is determined based on the selected threshold value and the measured traffic.