| 摘要 |
PURPOSE:To use a single control mode to cope with each system, by indexing a corresponding address on a group constitution table and controlling the incoming of a subscriber of the next order on a basis of control information when a subscriber is busy. CONSTITUTION:Value 2 is set to control information 3-2 in an address on a group constitution table 1 indexed by a link 2-1 corresponding to a representative subscriber A, and value 0 is set to control information 3-1 and 3-3 in addresses indexed by links corresponding to other subscribers. When the subscriber A is busy for an incoming, the table 1 is indexed by the link 2-1, and states of two subscribers B and C of a maximum are detected on a basis of value 2 of control information 3-2. If subscribers B and C are busy for incomings, the index result is ineffective because of 0 of control information, and the busy state is reported to the calling subscriber. |
