| 摘要 |
The packet communication system enables communication between a communication unit connected in a conventional telephone network and a communication unit in a packet mode network. A device for exclusively selecting the connection network is provided so that, at the time of transmission of a signal from one communication unit to another, the connection path is selected according to the kind of the network to which the other communication unit belongs. At the time of signal reception, the communication unit is connected to only one of the conventional telephone network and the packet mode network. The packet communication system includes a packet processor for converting an information signal, such as speech, inputted from an input unit (for example, a transmitter microphone of a handset) into the form of a packet. The packet is transmitted to the packet mode network and converted into the original information signal stream to reproduce the signal stream by an output unit (for example, a receiver of the handset). A conventional telephone network interface controller is provided for reproducing the speech or like information signal received from the conventional telephone network by the output unit. An exclusive selector selects either the conventional telephone network or the packet mode network at the time of signal reception.
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