| 摘要 |
A precise network time service that provides synchronization and time of day information. In accordance with my invention a user or customer premise equipment initiates the process by requesting time service from a network time server. The server responds by sending operation, administration, and maintenance (OAM) cells to the requesting party. These cells are immediately looped back to the time server and used to derive a minimum round trip time. Based on the minimum round trip time, the time server and the requesting party's equipment are subsequently synchronized. Once synchronized, delay measurements are used to maintain synchronism and provide time of day information so that such practical network problems as congestion may be monitored.
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