Quantitative Inaccuracy Measurement
Unlike other network time services, DTS uses manufacturer's specifications and direct observation to determine the inaccuracy of system clocks relative to UTC. DTS appends an inaccuracy measurement to each time value that it uses internally. This measurement takes into account cumulative clock error, communications delays, and processing delays. DTS uses combined time and inaccuracy measurements from one or several sources to calculate the most accurate new clock settings for client systems. (See Synchronizing System Clocks for further information about the DTS synchronization process.)