| 摘要 |
A telephone system including a switching circuit (3) connected to a plurality of extension telephone sets (1-1 to 1-n, 1-p) a plurality of office lines (4-1 to 4-m) for selectively connecting the respective extension telephone sets and the respective office lines, a control unit (6) for connecting an extension telephone set and an office line through the switching circuit (3), a main memory (8) for registering the extension telephone sets diverted into respective terminating call dedicated telephone sets. When a key provided at an extension telephone set is pressed in a predetermined process to input a data for diverting the extension telephone set into a terminating call dedicated telephone set, the control unit (6) registers the extension telephone set into main memory (8). When there is a terminating call for an extension telephone set group consisting of extension terminals dedicated to terminating calls, the control unit (6) distributes the terminating call to the respective extension telephone sets on the basis of the registered contents of main memory (8).
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