| 摘要 |
PROBLEM TO BE SOLVED: To provide a call control server capable of reducing both of the volume of subscriber data stored in the call control server and the traffic volume of subscriber data received by the call control server.SOLUTION: A call control server 2 has a subscriber data deletion part 23 that, when registering the position of a terminal, registers a piece of location information on a record of a subscriber data storage section 21. When the length the time elapsed from the point when the location information get ineffective is longer than a preset time threshold level, the subscriber data deletion part delete the subscriber data from the record.SELECTED DRAWING: Figure 3 |
