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Well, I now have another office complaining of the audio drop-outs.
Logs are showing the same issues. RTP just stops for awhile then
resumes.<br>
<br>
At the original problem office, I replaced all the network cables,
replaced two network hubs, and made sure the phones are all
connected correctly. The problem still exists.<br>
<br>
One thing I did notice during testing is that the audio is perfectly
fine as long as there is no internet traffic, but once there is
internet traffic, the audio quality drops drastically, then cuts out
completely. Once the internet traffic stops, there is about a 2
second lag, then the audio resumes.<br>
<br>
I find that incredibly odd as we don't use VOIP outside lines, and
none of the voice traffic should be passing through our firewall,
router, or DSL modem.<br>
<br>
Internal network traffic, such as moving a file between shared
folders on 2 computers on the internal office network does not
impact the audio at all. However, if I try to send a file across
the VPN, refresh a web page in the browser, or run a bandwidth test
from either computer, the audio goes glitchy then drops out until
the traffic returns to normal.<br>
<br>
Attached is a network diagram to show how both offices are set up.
There shouldn't be any reason for traffic that goes straight to the
internet to affect the internal VOIP traffic. The Asterisk server
only runs Asterisk, Hylafax, and a Samba share for the workgroup
copier/scanner to save scanned files to. It isn't doing DNS, or
anything that would tax it's resources. The servers both have
quad-core CPUs and 16 GB of ram. <br>
<br>
I've tried switching codes between ulaw, alaw, and g.729 and the
problem persists at both offices.<br>
<br>
<br>
Any ideas?<br>
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<div class="moz-cite-prefix">On 3/26/2018 10:30 AM, Bertrand LUPART
- Linkeo.com wrote:<br>
</div>
<blockquote type="cite"
cite="mid:577C32B4-9BAF-41BA-BA24-AF58F2F850E3@linkeo.com">
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<div>Hello,</div>
<div><br class="">
</div>
<div><br class="">
<blockquote type="cite" class="">
<div class="">
<div class="">Only one of the servers has the drop-out
issues. This location has a network switch on the main
desk due to wiring limitations, but several<br class="">
of the other non-problematic offices do as well.<br
class="">
</div>
</div>
</blockquote>
</div>
<div class=""><br class="">
</div>
<div class="">I run some offices with similar asterisk
configurations, only one experiencing drop-out calls as well.</div>
<div class=""><br class="">
</div>
<div class="">Just visited the impacted office today, discovering
their phones are daisy-chained. Still investigating, but i'm
pretty confident correctly wiring them on a decent switch will
correct the issue.</div>
<div class=""><br class="">
</div>
<div class="">Also double-check the phone are correctly wired (LAN
on LAN port and not on computer port)</div>
<div class=""><br class="">
</div>
<div class="">OTOH</div>
<br class="">
<div class="">
<div dir="auto" style="color: rgb(0, 0, 0); letter-spacing:
normal; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap: break-word;
-webkit-nbsp-mode: space; line-break: after-white-space;"
class="">
<div dir="auto" style="color: rgb(0, 0, 0); letter-spacing:
normal; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap: break-word;
-webkit-nbsp-mode: space; line-break: after-white-space;"
class="">
<div dir="auto" style="color: rgb(0, 0, 0); letter-spacing:
normal; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; word-spacing:
0px; -webkit-text-stroke-width: 0px; word-wrap:
break-word; -webkit-nbsp-mode: space; line-break:
after-white-space;" class="">
<div dir="auto" style="color: rgb(0, 0, 0);
letter-spacing: normal; text-align: start; text-indent:
0px; text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
word-wrap: break-word; -webkit-nbsp-mode: space;
line-break: after-white-space;" class="">-- <br class="">
Bertrand LUPART</div>
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</blockquote>
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