| 摘要 |
PURPOSE:To charge a user who made an automatically outgoing telephone call through a main wire for his private call with an automatic private branch exchange, by installing a means which stores charging information to each call originating from the main wire. CONSTITUTION:When a user A, to whom an individual No. PN is given, makes a call and dials the individual No. PN after a special No. for discriminating a private call, a central controller 2 sets a call controlling area 32 in a main storage device 3 and stores the individual No.PN. Since a main wire outgoing No. and called subscribed No. are dialed successively, the central controller 2 connects a telephone set 8 with a main wire 5 through a main wire trunk 4 and charging pulse receiving device 6. When the called subscriber answers thereafter, a charging pulse from the main wire 5 is received by the receiving device 6 and charging information MI is stored in the call controlling area 32. When the call is completed, a charging information storing mechanism 23 extracts the final value of the area 32 and stores the final value in an area corresponding to the individual No. PN in a registration area 31. |
