| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a transmission system with plural network nodes which are constituted so that an OAM cell is evaluated. SOLUTION: A network node is provided with at least one evaluation unit 8. State information extracted from a packet is stored in a table 14 by the evaluation unit 8. The evaluation unit is also stored in the table 14 irrespective of the order of individual receiving packets and a present state in relation to a connection is determined for each connection in a specified order based on the state determined so far and a state information signal in relation to the received connection.</p> |
