| 摘要 |
PURPOSE:To perform circuit and packet combined exchange, by using time slots on a communication link fixedly for a specific period to circuit exchange, or dynamically only for signal packet transfer. CONSTITUTION:Circuit correspondence parts 14, 15, and 16 are connected to transmission lines 17, 18, and 19 between terminals or stations, and individually have data buffer devices 23, 24, and 25 for realizing the timedivision switch function of data transmission and reception to and from an optional time slot on the communication link 13 and circut correspondence signal processing parts 20, 21, and 22 having signal processing functions independent by frame level processing circuits during, for example, packet transfer, thereby multiplexing all of data on a circuit exchange type, data on a packet exchange type, and signals for call control, etc., on time-division basis. The time slots are used fixedly for the transfer of the data on the circuit exchange type, and packet transfer time slots are used dynamically only during the transfer of the data on the packet exchange type and signals. |
