Anyone seen this kind of problem? SIP traffic not getting to destination but traceroute does

Wed Nov 9 20:45:48 UTC 2011

----- Original Message -----
> From: "Jeff Wheeler" <jsw at inconcepts.biz>

> On Wed, Nov 9, 2011 at 1:47 PM, Jay Nakamura <zeusdadog at 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 at baylink.com
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