| 摘要 |
PURPOSE:To increase the efficiency of line usage at a limited channel number and to improve the service to users, by determining the number of zone choke with the information from the terminal subscriber of a mobile station. CONSTITUTION:When the communication desired time and minute information using a part of the PB dial signal of a telephone set of a mobile station is received at a PB receiver 601 of the control station, this output is transmitted to the number of closed zone detection circuit 602 to activate relays ZB1-ZBn according to the number of closed zones. The zone 605 in which the circuit 604 and the mobile station are present is determined with the contact. The cross point between the circuit 604 and the zone 606 is closed with the cross point 605 for zone tracing to stop vacant line signal to designated zones for choke. Next, since the subscriber dial start signal is incoming, connection is made to the terminal subscriber according to the dial number at the exchanger 609. |
