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<p>Dovid Bender,</p>
<p>I'm seeing the same sort of thing. Polycom phones. Multiple
customers getting to me from Verizon in NYC area. I'm seeing
phones register for a while, then drop off, then I see them trying
to re-reg resulting in your 401 below. <br>
</p>
<p>Call me. 212 497 8015. Let's look at this.</p>
<p>Pete<br>
</p>
<pre class="moz-signature" cols="72">Pete Rohrman
Stage2 Support
212 497 8000, Opt. 2</pre>
<div class="moz-cite-prefix">On 5/13/19 12:20 PM, Dovid Bender
wrote:<br>
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<blockquote type="cite"
cite="mid:CAM3TTh2WCwQcWBjjNPHXQbWAsowXgarev61ovOTA3AZ3D5-cfQ@mail.gmail.com">
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<div dir="ltr">Thought of that. Customers have their own CPE's. So
far the only thing mutual here is that it's NTT -> VZ. Here
is what I found so far looking at two Polycom phones using non
standard ports (e.g. not 5060)
<div>1) PhoneA tries to register multiple extensions and for
each request we send a 401. We expect to get back a REGISTER
request with a no-once but we don't. This happens for a while
and then magically it starts working.</div>
<div>2) PhoneB tries to register the time time as PhoneA and has
no issues.</div>
<div><br>
</div>
<div>At first I thought it was something possibly with the SIP
call-ID but I ruled that out since in the same SIP DIALOG it
was not working then it started. Also the seems to be per
phone each phone is behind NAT and the traffic is coming from
a different NAT'd port. Seems like there is some device in the
middle that is randomly dropping traffic on specific sessions.</div>
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<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, May 13, 2019 at 11:40
AM Brielle Bruns <<a href="mailto:bruns@2mbit.com"
target="_blank" moz-do-not-send="true">bruns@2mbit.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On
5/13/2019 9:21 AM, Dovid Bender wrote:<br>
> Hi,<br>
> <br>
> Over the last 48 hours we have been getting a lot of
alerts of customers <br>
> phones losing registrations to us. All the complaints are
coming from <br>
> customers that are on VZ Fios in the NYC area. Anyone
else see anything <br>
> strange going on?<br>
> <br>
<br>
<br>
While you are diagnosing, might check to make sure that the
SIP ALG is <br>
disabled on all of their routers too.<br>
<br>
<br>
<br>
-- <br>
Brielle Bruns<br>
The Summit Open Source Development Group<br>
<a href="http://www.sosdg.org" rel="noreferrer"
target="_blank" moz-do-not-send="true">http://www.sosdg.org</a>
/ <a href="http://www.ahbl.org" rel="noreferrer"
target="_blank" moz-do-not-send="true">http://www.ahbl.org</a><br>
</blockquote>
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