| 摘要 |
PURPOSE:To ensure a connection for an extension mobile subscriber who moves in an exchange service area of plural private mobile switchboards with a dial system exactly same as that for the general extension subscribers, by improving a register sender to the extension mobile subscriber. CONSTITUTION:When a mobile subscriber MOBO belonging to the home position area B gives a call from service area B, a two-way trunk BWTO-B is started via a base station BSO-B. A mobile switchboard identifies the number of the calling mobile subscriber and then connects a line trunk LCUOB to the trunk BWTOB. Then a register sender is connected to the trunk BWTO-B, and the private exchange identification number B is sent to the register sender. After this, the dial information is received to be stored successively and a dial pulse is transferred to an upper private switchboard to carry out a connection. In case a mobile subscriber of the areas other than the home position area B has a call, the exchange identification number A is sent to the register sender. Using this information, the dial transfer is controlled in accordance with the area of the called subscriber. |
