Re: [Ekiga-list] Question about call monitoring section on the Wiki

[Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr>]

On 05/05/11 15:28, Dave Koelmeyer wrote:
> Hi All,
>
> I've updated the following section of the Wiki:
>
> http://wiki.ekiga.org/index.php/Documentation#Monitor_a_call

Good!

> I have a few questions which need confirmation by the experts.
>
> 1) Are the bandwidth units for audio and video in KB/s or Kb/s?

It's kB/s (kilobytes per sec).

> 2) There is an existing description for a parameter which apparently
> doesn't exist in the network traffic statistics pop-up window (which
> I've added a screengrab for), that is, "Round trip delay":
>
> "Round-trip delay: The required time for a packet to arrive at its
> destination and come back. You can see the round-trip delay during a
> call as a connection quality indicator together with the Lost and Late
> packets statistics. "
>
> Can this be removed, or is the round-trip delay reading to be found
> somewhere else in the interface, or was it present in an earlier version
> of Ekiga?

Good question!  Moreover, I commonly use RTT (Round Trip Time) instead 
of RTD (Round-trip delay time), I propose to change to RTT.

Looking at the code, I know that the signal bar with 4 vertical bars is 
a graphic representation of the jitter (when there is no loss, no late 
packet, no out of order, highest means jitter < 50ms, lowest means 
jitter > 200 ms; otherwise 1 or 0 bars are shown).

But about RTT I have no idea.  Julien, do you know if it was used in the 
past?  I looked at opal code and I do not see such information.

> 3) There is no description for the "Out of order packets" parameter
> which *is* visible in the network traffic statistics pop-up window.
> Could someone please give me a brief summary of what this is?

Out of order packet means that it is sent (after/)before another packet, 
but it arrives (before/)after the other packet.  I suppose that what is 
inside parenthesis should be removed.  It is difficult for me to find 
out in opal code (rtp.cxx, variable packetsOutOfOrder) what precisely it 
corresponds to.

In ekiga, the percentage shown is the number of out of order audio and 
video packets divided by the total number of audio and video packets.


Do not forget to remove pages you have integrated in 
Documentation/Manual, such as the section 
http://wiki.ekiga.org/index.php/Managing_Calls#Understanding_the_statistics.

Thank you!
--
Eugen