in case you want to know the other big annoying one:<br><br>If you suddenly change timestamp base mid call, sonus will lose 2 sec of audio trying to adjust.<br><br>Say you have an ivr that asks you to dial an ext then places the call.<br>
While the ivr is the far end and interacting with the sonus there is a series of timestamps generated by FS.<br>Then when the call is placed we start passing through the timestamps from the new farther far end so the jitter can<br>
be preserved. (if we rewrite the timestamps to our original ones, any jitter would be locked in place).<br><br>With sonus, you pretty much have to set FS to rewrite the timestamps or live with the audio drop =(<br><br><br>
<br><br><div class="gmail_quote">On Wed, Dec 31, 2008 at 3:01 PM, Kristian Kielhofner <span dir="ltr"><<a href="mailto:kristian.kielhofner@gmail.com">kristian.kielhofner@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d">On 12/31/08, Michael Jerris <<a href="mailto:mike@jerris.com">mike@jerris.com</a>> wrote:<br>
> If your looking for specifics of where they are being stupid and/or<br>
> violating rfc's pop on by and let us know, we can probably detail some<br>
> stuff that is not in the bugs as well.<br>
><br>
> Mike<br>
<br>
</div>Mike,<br>
<br>
Thanks but I (think) I basically figured it out...<br>
<br>
I am using G.729 and RFC 2833 DTMF.<br>
<br>
If you send a 2833 event and voice packet with the same timestamp<br>
Sonus will drop the event (maybe both) EVEN IF they have different<br>
sequence numbers. Nevermind that this behavior (same timestamps) is<br>
quite possible and even desired in some cases and violates both RFC<br>
1889/3550 and RFC 2833/4733.<br>
<br>
I didn't dig into the code but it looks like the Freeswitch<br>
workaround just tweaks the timestamps to get around this if a Sonus<br>
originator is detected (by parsing the SDP). Nice.<br>
<br>
Did I get it?<br>
<div><div></div><div class="Wj3C7c"><br>
--<br>
Kristian Kielhofner<br>
<a href="http://blog.krisk.org" target="_blank">http://blog.krisk.org</a><br>
<a href="http://www.submityoursip.com" target="_blank">http://www.submityoursip.com</a><br>
<a href="http://www.astlinux.org" target="_blank">http://www.astlinux.org</a><br>
<a href="http://www.star2star.com" target="_blank">http://www.star2star.com</a><br>
<br>
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