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<p>Hi,</p>
<p>We are working on a product to analyze pcap files of VoIP calls.
So far it does a reasonable job of analyzing the frequency
distribution of packets in both directions, pointing out which
direction packet loss / bad jitter occurs. If you can trap the
traffic on the outside and the inside of your Banana Pi and send
me the pcap files, I would be happy to run it through our analyzer
as further information for you. If it shows DTK isn't sending
packets when it should, that will be obvious, and you can send to
them as solid evidence of their guilt :)<br>
</p>
<p>Beyond that, are you certain you aren't taxing the Banana Pi? It
really *should* be able to handle a single call while handling
your LAN's routing/firewall tasks, but you are probably skating
the edge. The results of the above might point out that the Pi
isn't *sending* packets it should be, or sending them way late, in
which case the issue is actually your hardware.</p>
<p>Cheers,<br>
</p>
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<td style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; WIDTH:
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STRATUSTALK, INC. / CTO<br>
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<div class="moz-cite-prefix">On 6/15/20 11:55 AM, Luca Bertoncello
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:32acab28-f1e6-000c-1cd0-e9f357ef3323@lucabert.de">
<pre class="moz-quote-pre" wrap="">Am 14.06.2020 um 17:33 schrieb Luca Bertoncello:
Hi
So, I got a phone (Elmeg IP290) from a collegue and tested it...
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">What I'll do tomorrow with a test phone is:
1) connecting it to my Asterisk and try to make a call
2) connecting it directly to the servers of Deutsche Telekom (using my
network) and try to make a call
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">
Absolutly *no changes* on the behaviour compared with my Thomsons...
I try to summarize:
1) Phones are not the problem, since 3 phones of 2 different
companies/model have the same issue.
2) Asterisk seems not to be the problem, too, since I have the same
behaviour if I connect to phone directly to the server of Deutsche Telekom.
3) Traffic shaping seems not to be the problem, too, since I tried to
deactivate it.
4) The problem happens *only* on active call, not by voicemail.
4a) To test it I read a text and my partner just listen it, and then he
read a text and I listen it. *No* simulaneously speak!
5) A *single call* (since I couldn't reproduce it anymore), made using
my Android phone as SIP-client connected to my Asterisk, had not the
problem. Any other try to call someone using my mobile phone via SIP had
the problem.
I could *not* test connecting to the server of Deutsche Telekom using
the Internet connection of someone other, since Telekom bounds my
VoIP-login to my IP.
I really think, the problem should be by Deutsche Telekom...
What is your opinion? Do you see some other tests I should try?
Thanks a lot
Luca Bertoncello
(<a class="moz-txt-link-abbreviated" href="mailto:lucabert@lucabert.de">lucabert@lucabert.de</a>)
</pre>
</blockquote>
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