On 13 Nov 2008, at 09:24, Roni Even wrote:
I am not sure what you mean NTP refresh, if the test was using the system clock than you would expect in XP that it will be updated every tick which is 10 or 15 msec which can account for the error. NTP is used in RTP (RFC 3550) for synchronization and the RTP time is using the system clock which may add skew but it is not because of NTP.
One minor clarification: RTP uses an NTP format timestamp, but it doesn't require the use of NTP.
-- Colin Perkins http://csperkins.org/
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