| 摘要 |
PURPOSE:To simply simulate a network by controlling the connection and disconnection of a call by the I/O control of a computer. CONSTITUTION:When the termination of a dial number is recognized by an A circuit input port 8 through a receiver 3, a CI signal is turned ON by a B circuit control output port 11, and considering it as one signal in the signal 23, through a driver 5, a call incoming and a calling from the network to a terminal late indicated. Afterwards, the switch of a data line connection port 7 is turned ON, and the transmitting data line Txa of the terminal 1 and the receiving data line Rxb of the terminal 2, and the transmitting data line Txb of the terminal 2 and the receiving data line Rxa of the terminal 1 are connected respectively. Thus, because all for a speed assortment or a physical interface assortment as well can be made built-in, a perfect device as a simulation network can be constituted.
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