| 摘要 |
PROBLEM TO BE SOLVED: To provide an authentication device having an authentication information reporting system whereby security is held without talking much time for authentication between mutual exchange equipments with the different authentication arithmetic systems. SOLUTION: An exchanging device includes plural digital exchange equipments 1 and 2 which respectively have plural connected portable radio equipments 6 and is different in authentication arithmetic system from each other. After the portable radio terminal 6-1-1 which belongs to one side digital exchange equipment 2 executes communication through the other side digital exchange equipment 1 with different authentication arithmetic system, an authentication arithmetic result is transmitted from one side digital exchange equipment 2 to the other side digital exchange equipment 1 so as to be stored in the other side digital exchange equipment 1 and the stored authentication arithmetic result is used at the time of succeeding communication. |
