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<div class="moz-cite-prefix">Hello,<br>
<br>
If the UDP packet is fragmented and due to whatever reasons the UA
doesn't receive it properly, there are a couple of things that you
can do to reduce the SIP message size :<br>
<br>
1 - enable topology hiding in OpenSIPS ( see
<a class="moz-txt-link-freetext" href="http://www.opensips.org/html/docs/modules/1.11.x/dialog.html#id296413">http://www.opensips.org/html/docs/modules/1.11.x/dialog.html#id296413</a>
)<br>
2 - manually remove optional headers from the OpenSIPS script (
<a class="moz-txt-link-freetext" href="http://www.opensips.org/html/docs/modules/1.11.x/sipmsgops#id293936">http://www.opensips.org/html/docs/modules/1.11.x/sipmsgops#id293936</a>
)<br>
3 - remove some of the codecs from the SDP (
<a class="moz-txt-link-freetext" href="http://www.opensips.org/html/docs/modules/1.11.x/sipmsgops#id294821">http://www.opensips.org/html/docs/modules/1.11.x/sipmsgops#id294821</a>
)<br>
<br>
Also, another alternative would be to switch to TCP in order to
avoid these fragmentation issues.<br>
<br>
Best Regards,<br>
<pre class="moz-signature" cols="72">Vlad Paiu
OpenSIPS Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a> </pre>
On 01.12.2014 16:19, Stefano Pisani wrote:<br>
</div>
<blockquote cite="mid:547C78DD.1040104@omnianet.it" type="cite">
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In the first case the last UDP packet (INVITE with authentication
header) is fragmented.<br>
It's very common to lost fragmented UDP packet.<br>
<br>
s<br>
<br>
<div class="moz-cite-prefix">Il 28/11/2014 09.42, Michele Pinassi
ha scritto:<br>
</div>
<blockquote cite="mid:54783589.6020600@unisi.it" type="cite">
<pre wrap="">Hi all,
i'm experiencing a strange issue. Some VoIP phones, like mine (5002),
cannot call other phones (like 5023) but i receive calls from 5023. Same
config, same context.
I did some sipgrep:
Call from 5002 to 5023 (FAILED): <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://pastebin.com/BF6YyWHr">http://pastebin.com/BF6YyWHr</a>
Call from 5023 to 5002 (SUCCESS): <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://pastebin.com/rW3AKr22">http://pastebin.com/rW3AKr22</a>
My config: <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://pastebin.com/9gP9xncd">http://pastebin.com/9gP9xncd</a>
Thanks for all your help.
Michele
</pre>
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