| 摘要 |
PURPOSE: A group calling system is provided to enable a user to embody or reject a calling right to the responded person and make a calling set possible according to groups by supplying a main device, the 'n' number of terminals, and a manager terminal managing the terminals for calling to a wanted person or group without through a telephone or a key telephone. CONSTITUTION: A communication unit(1) receives setting states of terminals. A voice switching unit(2) switches a voice signal between the terminals and makes a call connection among a plurality of terminals possible. A connection device(3) connects a main body and the terminals through a communication path. A central control unit(4) receives a state selected from each terminal, and stores the received data to a main memory unit(5) and controls the voice switching unit(2) based on the stored information and manufactures a plurality of calling circuits, and transmits a constitution state of a calling group to each terminal. In addition, a manage terminal(6) is provided. A connection unit(7) is connected to the main device through a communication line. A mixer unit(8) divides a transmission/receipt of a voice from a calling group inputted from the main device through the connection unit(7) and connects the received signal to a receiving circuit of a headset. A communication unit(9) transmits a setting state of the terminal to the main device. A connection displaying unit(10) displays information respect to a connection state of the terminal. A selection switch unit(11) controls a selection of the calling group and a terminal connection. A control unit(12) searches a switch selection state of the selection switch unit(11) and transmits the result to the main device and displays the selection state received from the main device on the connection displaying unit(10).
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