| 摘要 |
PURPOSE:To cope with one pair multiple connection of a broadcasting service and the like by recording an information that a subscriber connected to an entry line is a common source to be an object of a multiple connection to one or not. CONSTITUTION:Whether a connection request from a subscriber 13-1 is directed to a common source 12 or not is judged by referring an information retaining means 31 by a central control unit. If the subscribers 13-1 and 13-2 request for connection to the common source 12, a multiple connection is readily done in a switch (g). Further in case when subscribers 13-3 and 13-4 also request for connection, a multiple connection is done in-switches (d) and (a), respectively. In this manner, by using commonly a link from a calling source as much as possible an using rate and an internal calling breaking rate are lowered. This method can be similarly applied in case of a time division switch. |
