| 摘要 |
PURPOSE:To realize a packet multiplex in a transmission frame format adequate for an input data signal state, by providing a transmission-side selective connection unit, a multiplex unit, a reception-side selective connection unit, and a multiplex separater. CONSTITUTION:Transmission-side selective connection unit 6, when a call requiring special transmission delay characteristics is made, makes a connection to a transmission line corresponding to the characteristics of the call. Then, multiplex unit 30 assigns the only call to the same fixed address of each prescribed frame on preferential basis for exclusive use and releases the exclusive-use state of the address when the call ends, thereby packet-multiplexing various data. At the reception side, on the other hand, the multiplex separator unit separates the multiplex signal on the basis of the address of the frame and each property of the packeted data signal and the output is connected to a required transmitter via reception-side selective connection unit 35. Consequently, a packet multiplex in a transmission frame format adequate for an input data signal state can be made.
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