Colin,
In the p2psip diagnostics
draft, we also say that we use the “NTP format” time.
Best Regards,
Song Haibin
Email: melodysong@xxxxxxxxxx
Skype: alexsonghw
From:
p2psip-bounces@xxxxxxxx [mailto:p2psip-bounces@xxxxxxxx] On Behalf Of Colin Perkins
Sent: Friday, November 14, 2008
3:34 AM
To: Roni Even
Cc: p2psip@xxxxxxxx; ietf@xxxxxxxx
Subject: Re: [P2PSIP] P2PSIP
diagnostics: PING discussion
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.
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