| 摘要 |
A method for controlling clocks in computer networks of a hierarchical structure includes the continual synchronization of the clock modules provided in the individual network levels to the time of a central master clock by means of messages. Time stamps are output from each clock module. Besides a time-of-day field and a date field, these time stamps contain additional information fields relating to synchronization source, synchronization type, synchronization delay, and time-of-day resolution.
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