How can such a large company have something so simple as SIP
registration mangled up?

On 9/10/24 5:22 PM, Mike Hammett wrote:
> We've just moved to tunneling anything VoIP if on Comcast's network.
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions <http://www.ics-il.com/>
> <https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
> Midwest Internet Exchange <http://www.midwest-ix.com/>
> <https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix>
> The Brothers WISP <http://www.thebrotherswisp.com/>
> <https://www.facebook.com/thebrotherswisp><https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
> ------------------------------------------------------------------------
> *From: *"Matt Hoppes" <mattlists@rivervalleyinternet.net>
> *To: *nanog@nanog.org
> *Sent: *Tuesday, September 10, 2024 2:17:37 PM
> *Subject: *Third Party VoIP Over Xfinity
>
> I have an employee who has recently switched to Xfinity cable service.
> Ever since they switched their internet service their work phones will
> not stay registered for more than about 3 minutes.
>
> These same phones have been used on many ISPs without issues.  The same
> config has been used behind multiple levels of NAT without issues.
>
> She was fine, until she switched to XFinity.
>
> Of course, XFinity support is absolutely worthless.
>
> Anyone from XFinity Tier 3 or such that might be able to offer assistance?
>
> I suspect it's something stupid with either NAT overload in the modem or
> the modem not keeping the SIP channels open.
>
> I've tried playing around with registration times without any success.
> And again, we've never had issues with these phones or this setup with
> any other ISP.
>
>
>