摘要:
There is provided a system for judging validity of a radio terminal according to identification information on the radio terminal and providing a service. A radio network is divided into a plurality of zones. For each of the zones, there is arranged a server for storing in a particular zone, the position of the directory containing identification information on each radio terminal without storing identification information on the radio terminal registered in other zone. By communication between the server and zone controllers, the identification information on the radio terminal is confirmed and a service is provided. Thus, it is possible to realizing a roaming system capable of performing an ideal roaming without increasing the volume of the system resource.
摘要:
There is provided a service class control system and the like for facilitating modification of a service class of a terminal device or disabling unauthorized modification of the service class. A service class management server (1) contains service class data for specifying a range of service provided by the user terminals 2-1 to 2-n. When a user terminal 2-k transmits data requiring a start of providing a service, in response to this, service class data indicating the service class of the user terminal 2-k is transmitted to the user terminal 2-k. After receiving the service class data, the user terminal 2-k provides a service of the range specified by the service class data.