| 摘要 |
<p>A user makes a call to a center station (30) using a radio terminal (1) requesting communication. An authentication station (20) authenticates the call by checking a calling number that is attached to the call against the calling number that corresponds to this radio teminal and is managed at the authentication station. The authentication station then connects the call between the radio terminal and the center station so that they communicate with each other via a radio network (10). The user uses the radio terminal to fill in predetermined information on an input form sent from the center station. The input form on which the entries have been filled in is sent from the radio terminal to the center station, and contract procedures, contract annulment, or model change procedures with a communication provider are performed. If required, the radio terminal registers the calling number sent from the center station.</p> |
