Subject: [Megaco] Calculation for delay statistic in RTP package

From: "Kevin Boyle" <[email-masked]>
Date: Wed, 30 Nov 2005 02:48:02 -0500

All,
 
At the Q.3/16 meeting this week, a contribution was brought that seeks
to clarify the calculation for the delay statistic in the RTP package.
Before making a change, I wanted to poll the list to see how existing
implementations are calculating this stat.  The goal is to ensure that
the proposed definition does not conflict with the majority
interpretation.
 
Please respond to the list or me directly with the following information
about your implementation if you are willing to be tallied.  This
information will be used for the determination of the appropriate change
to the text, and will not be used for any other purpose.
 
"Our implementation calculates delay as:

*	propagation delay in the sending direction
*	propagation delay in the receiving direction
*	round-trip propagation delay as defined by RFC 3550
*	round-trip delay as defined by RFC 3550
*	estimated mean oneway propagation delay based on the measured
round-trip delay
*	the delay since last SR report in accordance with RTCP
*	other (explain)"

Thank you for your help,
 
Kevin
Rapporteur ad interim, ITU-T Q3/16

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