| 摘要 |
A packet transmission system comprises a routing processor and data-circuit terminating equipment (DCE) for transmitting data packets between a LAN and a public network, and further includes a table where timer set values corresponding to types of data packet protocol are stored in advance, and a timer which starts counting at the time of packet termination and stops counting when its count value reaches a selected timer set value. The table selects one of the timer set values based on the type of a data packet to be transmitted from the LAN to the public network. The timer outputs a disconnection signal to the DCE when its count value reaches the selected timer set value.
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