| 摘要 |
PURPOSE:To prevent the unexpected and excessive charging by securing the previous designation of the connection range for the calling subscriver to the mobile subscriber. CONSTITUTION:In case the transmission is given to mobile subscriber Y from subscriber X of area 4, connection designating code alpha is inserted with dialing. Mobile exchange 5 gives an access to position information memory 13 of mobile exchange 3 at home area 1 of subscriber Y and then receives the position information of Y through control circuit 12. As a result, the fact that subsriber Y exists in, for example, area 2 is known, and thus common control unit 5a decides the subsequent processes based on the dial information including code alpha as well as on the current prosition information. Code alpha functions to designate in steps whether the calling subscriber is connected or not in relation to the current position of the mobile subscriber, i.e., the call charge. |
