[146355] in North American Network Operators' Group
Re: Anyone seen this kind of problem? SIP traffic not getting to
daemon@ATHENA.MIT.EDU (Jay Ashworth)
Wed Nov 9 15:45:59 2011
Date: Wed, 9 Nov 2011 15:45:48 -0500 (EST)
From: Jay Ashworth <jra@baylink.com>
To: Jeff Wheeler <jsw@inconcepts.biz>
In-Reply-To: <CAPWAtbJGmc2oKUbHxJF-EHNZ0Y+xa_scp_1BGrZdykHVG8vdhA@mail.gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
----- Original Message -----
> From: "Jeff Wheeler" <jsw@inconcepts.biz>
> On Wed, Nov 9, 2011 at 1:47 PM, Jay Nakamura <zeusdadog@gmail.com>
> wrote:
> > So my questions is, is it possible there is some kind of filter at
> > Qwest or Level 3 that is dropping traffic only for udp 5060 for select
> > few IPs? That's the only explanation I can come up with other than
>
> I ran into exactly this problem last week with Rogers. All traffic
> from the client except udp/5060 could be received by us, and udp/5060
> was blocked. We tested other IP addresses on our (provider) side and
> did not find any blocking there, so we assigned a new IP to the SIP
> gateway. I hardly think this can be an ordinary malfunction, but good
> luck getting a phone company to troubleshoot a problem with their
> subscribers using mobile data to connect to a third-party voice
> gateway...
Well, just a couple of days ago, we discussed that XO does this kind of
rifle-bullet filtering in certain circumstances; is any party getting their
connectivity from them?
Cheers,
-- jra
--
Jay R. Ashworth Baylink jra@baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII
St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274
