[asterisk-users] Local calls not possible when Internet connection down

[John Harragin]

Are the phones and the server in the same subnet? You might making note of
the IPs and just simply try pinging everything with the uplink
disconnected. Also, if you are using domain names for registration, it is
possible a dns server must be reachable.

If you are using database for any of your call processing, an unreachable
dns server can also be the cause of trouble. For some reason, even if you
are using IP addressing, Mysql will try to resolve a connection and can
hang (there is a mysql parameter to not resolve addresses).

On Wed, Nov 8, 2023 at 8:46 AM Marek Greško <marek.gresko at protonmail.com>
wrote:

> Hello,
>
> it did not seem the call hung. It seemed it never started. There was no
> dialplan execution on the asterisk side. It looked like phones were
> unregistered. Same shows the log posted previously.
>
> Marek
>
>
>
>
>
> Sent with Proton Mail secure email.
>
> ------- Original Message -------
> On Wednesday, November 8th, 2023 at 1:21, John Harragin <
> jharragin at mw.k12.ny.us> wrote:
>
>
> > Marek,
> >
> > See if calls hang in the system if you encounter another outage
> > core show channels
> >
> > ...if so,
> > core set verbose 3
> > and see what instructions subsequent calls hang on.
> >
> >
> >
> > On Mon, Nov 6, 2023 at 4:44 PM Marek Greško marek.gresko at protonmail.com
> wrote:
> >
> > > Hello,
> > >
> > > sure I have local DNS server and public resolving should not be needed
> for phone registrations. Running pjsip show endpojnt show the endpoints as
> not in use.
> > >
> > > When looking into logs I see only res_pjsip_outbound_registration.c:
> No response
> > > received from sip provider. Nothing else.
> > >
> > > In phone log I see:
> > > CC_eventProc(event=63(CC_EV_SIG_REGISTER_FAILED),
> > > lid=0, par=0, par2=(nil))
> > >
> > > The phone is Cisco SPA525G2.
> > >
> > > Thanks.
> > >
> > > Marek
> > >
> > > ------- Original Message -------
> > > On Monday, November 6th, 2023 at 15:45, Joshua C. Colp
> jcolp at sangoma.com wrote:
> > >
> > > On Mon, Nov 6, 2023 at 10:42 AM Marek Greško
> marek.gresko at protonmail.com wrote:
> > >
> > > > It looks like all phones get unregistered, but I am not aware of the
> cause. Why are get not registered when there is a connectivity between them
> and asterisk?
> > >
> > > Are the REGISTER requests reaching Asterisk (do they show up in a
> packet capture, do they show up in "pjsip set logger on")? It needs to be
> further isolated. How are the phones configured to reach Asterisk? If using
> a hostname, are they still able to resolve it?
> > >
> > > --
> > > Joshua C. Colp
> > > Asterisk Project Lead
> > > Sangoma Technologies
> > > Check us out at www.sangoma.com and www.asterisk.org
> > >
> > > --
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>
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>
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