To perform detailed access management for each service of a user and charging for a utilization result in a closed area network.

At the time of receiving a service utilization request from a user terminal 101, an access management device 102 specifies the user from communication contents and requests user information to a user information management device 103. The user information management device 103 reads the information of the user and returns it to the access management device 102. The access management device 102 decides the propriety of service provision on the basis of the returned information. In the case of deciding that the service can be provided, counting by a timer is started simultaneously with access permission to a service provision device 104 or 106 and utilization time is measured.