| 摘要 |
In a network including a plurality of exchanges, an exchange at an order request destination is specified from a maintenance terminal of an exchange at an order request source, and an order for performing maintenance and management is input. The OAM cell including the order is generated and transmitted as an ODR-OAM cell. The exchange specified with the ODR-OAM cell performs the process according to the order, and transmits the result of the process to the order request source by using an ODR-OAM cell. The order request source receives the result of the process, and maintains and manages the network.OAM cells in an ATM network are defined as OAM cells for a file update process. The first cell is an FVC-OAM cell for checking the version number of the system file of an exchange at an opposing exchange. The second cell is an FSP-OAM cell for preparing the start of the file update process. The third cell is an FIS-OAM cell for dividing a new file used for an update and carrying the file. The exchange which makes a file update request transmits the FVC-OAM cell to the destination exchange whose file is to be updated, and checks the version number of the file. If the version number of the file stored by the destination exchange is newer, whether or not the file update preparation is completed is determined by transmitting the FSP-OAM cell. After this determination is made, the new file is transmitted with FIS-OAM cells.
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