| 摘要 |
PURPOSE:To save a display circuit on the whole by using only one display unit corresponding to a B board, by storing a memory, that corresponds to a call park, with the equipment position of an office trunk and a charging-display request memory with a display request. CONSTITUTION:As central controller CC is actuated after B board ATT makes a request connection to extension A, controller CC actuates switch controller SWC to release link Lka, so that extension A will be engaged with office trunk TRK. At this time, memory CPM that corresponds to a call park is stored with the equipment position of TRK and in display request memory SM that corresponds to it, a display request is set. On on-hook operation, the contents of SM are read out and CPM is retrieved to find the number of the B board. Then, the B board number, charge calculation result and extension are supplied to charging display controller KPOS and display unit DIPS provides fixed charging display by the output of KPOS. |
