<html>
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<br>
<div class="moz-cite-prefix">On 8/30/2017 5:03 AM, Steve Davies
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAFLM+huC4TnpA-gP5t=11T5gH50HpCXevuked_Mj_gJGS99wBg@mail.gmail.com">
<div dir="ltr">Mark,
<div><br>
</div>
<div>You have cropped the image you inserted above and removed a
very important part of the line you highlighted. I think is
says ",Mark" after the time value - You can even see the
un-cropped comma in your picture.</div>
</div>
</blockquote>
Thanks Steve, <br>
<br>
I did omit the Mark indication in the screenshot. <br>
<blockquote type="cite"
cite="mid:CAFLM+huC4TnpA-gP5t=11T5gH50HpCXevuked_Mj_gJGS99wBg@mail.gmail.com">
<div dir="ltr">
<div><br>
</div>
<div>RTP timestamps can be reset mid-stream if needed - It is
part of the spec, and most commonly happens when initially (eg
Asterisk) generated audio is replaced with audio from an
external source once the call is bridged. The early timestamp
comes from Asterisk, and the subsequent timestamp is retained
from the new source of the RTP.</div>
</div>
</blockquote>
Thanks! That helps.<br>
<br>
I had read the portion of rfc3550 that said <br>
<pre class="newpage" style="font-size: 13.3333px; margin-top: 0px; margin-bottom: 0px; break-before: page; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">The sampling instant MUST be derived from a clock that increments monotonically and linearly
in time to allow synchronization and jitter calculations</pre>
<br>
So that led me to believe that the timestamps should increment at
predictable intervals. Wireshark flagged it in the RTP stream
analysis as being an Incorrect Timestamp too.<br>
<blockquote type="cite"
cite="mid:CAFLM+huC4TnpA-gP5t=11T5gH50HpCXevuked_Mj_gJGS99wBg@mail.gmail.com">
<div dir="ltr">
<div>No packets should be dropped though in my experience some
jitter buffers can handle it poorly.</div>
<div><br>
</div>
<div>Hope that helps,</div>
<div>Steve</div>
</div>
<br>
</blockquote>
Thanks for your response.<br>
<br>
</body>
</html>