asterisk users - Jun 2020 - call replicating

Hello,

after migration from chan_sip to res_pjsip I get strange behavior when
receiving call from the outside world. When call is received, it is
replicated multiple times. Two of that calls get to the phone. So the
phone is ringing on both lines. When having only Dial function in
dialplan I am able to place call. But when creating some dialplan
procedures containing VoiceMail I get phone ringing for 1 second and
it stops. The caller is immediatelly directed to voicemail. It is
because the second (or third) call gets busy.

How can this behavior been overriden? I do not expect this is problem
on provider side, since it was working normally using chan_sip.

Thanks

Marek

On 6/5/20 12:24 PM, Marek Greško wrote:
> How can this behavior been overriden? I do not expect this is problem
> on provider side, since it was working normally using chan_sip.
Console output and dial plan snippets are always useful when diagnosing,

Doug

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Hello,

I found the problem and also the workaround.

Clearly, since it was working with chan_sip it should not be dialplan
problem, but sip stack problem.

I have line=yes set up. After asterisk restart the old registration is
not unregistered and new one is registered with different line value.
Then incoming invites and qualify requests are sent to all the
registrations and there the problem lies.

I am thinking of how could asterisk prevent such situations.

1. I think it should send unregistration requests on shutdown.

2. I think it should keep the database of active registrations and
unregister and reregister all of them during startup in case some of
them remain active after unclean shutdown.

Also probably provider side should be fixed?

Thanks for your insight.

Marek


2020-06-05 19:29 GMT+02:00, Doug Lytle <support at
drdos.info>:
> On 6/5/20 12:24 PM, Marek Greško wrote:
>> How can this behavior been overriden? I do not expect this is problem
>> on provider side, since it was working normally using chan_sip.
>
> Console output and dial plan snippets are always useful when diagnosing,
>
> Doug
>
>