| 摘要 |
PURPOSE:To allocate data and to give the priority classified by calling type by executing the receipt according to the priority order of prescribed calling type in the process of constitution of a calling accept mode, and selecting one calling terminal by a calling terminal selecting mode when plural calling terminals exist. CONSTITUTION:The calling accept mode is performed in the following. That is, circuits 80, 90, 70 of the network terminator NT insert a control bit pattern generated in the circuit 60 to a control time slot P of an outgoing frame via a circuit 30 for transmitting it and informs the receipt of calling request of signaling with priority to each terminal. Then, the circuit 40 detects the presence of the calling terminal by a flag of a calling request display time slot R of the incoming frame. When existing, the result of detection is informed to each terminal by using the control bit pattern by the circuits 80, 50, 70, 30. Then, the calling terminal selecting mode is executed. When it is recognized that plural calling request terminals exist, a terminal permitting the calling request is decided by collating the coincidence with a prescribed value at each address bit of each terminal and a specific address is decided. |
