Device device, the access device, the access system, and a communication establishing method

Device device (2) is capable of communicating with an access device (1). Device device (2) controls the addition device (27), the access control unit that acquires characteristic information of the initialization processing when the additional device (27) of the additional device (27) and (203), the acquired characteristic information a memory (211) for holding a communication unit for performing data transmission and reception between the access device (1), the exclusive right is a right to exclusively control the additional device (27), was transferred to the access device (1) later, when the via the communication unit access device (1) a request for initialization processing, the communication control unit for transmitting a characteristic information held in the memory (211) the access device to (1) (201) and, equipped with a.