| 摘要 |
PURPOSE:To eliminate the deviation of a traffic to a specific pilot number in an extension group by modifying sequentially orders of a pilot extension and an entension representation. CONSTITUTION:When an incoming from a trunk line is obtained, a central control unit 2 reads out the corresponding extension number (for instance, a subscriber A) from a trunk line corresponding extension number memory circuit 6. When the subscriber A is idle, a trunk line incoming call signal is transmitted to the subscriber A. After the central control unit 2 reads out the corresponding extension number from the memory circuit 6, an extension subscriber (for instance, subscriber B) given the secondary priority is read out from an extension representation group memory circuit 5, and stored in the corresponding address of the memory circuit 6. Consequently, when the incoming is obtained from the trunk line, the subscriber B is called as a pilot extension. |
