Cause: 487 Request Terminated/INVITE from

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hi
We have 2 clients with 3cx pro and after updating to 16 version we facing problems with outgoing calls. the provider is a sip trunk with local ip. the problems show up in specific hours in the day and it lasts from 5 to 20 minutes. in the active log '' 12/06/2019 2:02:49 PM - [CM503003]: Call(C:250): Call to <sip:[email protected]:0> has failed; Cause: 487 Request Terminated/INVITE from 10.100.11.112:5643 '' or ''12/06/2019 2:02:55 PM - [CM503003]: Call(C:250): Call to <sip:[email protected]:0> has failed; Cause: 487 Request Terminated/INVITE from 10.100.11.112:5643''

any help

 

[JohnS_3CX]

Who is 10.100.11.253 and 10.100.11.112 in these examples? is 112 an extension number?

We will need some more information from verbose logs showing the invite from the PBX machine IP going to the trunk provider IP, or you can run a capture when the failure period starts and try to make an external call.

 

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thanks i will post it

 

[JohnS_3CX]

Avoid to post personally identifying information please, so post carefully

 

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Call or Registration to 6947430088@(Ln.10000@Vodafone) has failed.

0.0.0.0 replied: 503 Transport failure: no transports left to try; warning: No other DNS entries to try (7,10061); internal
and i take a verbose capture ( can i attach here)

 

[JohnS_3CX]

I suspect you may be facing a specific issue that was solved in V16 Update 4.

This is in beta now, and final should come out soon. You can update to the beta if you want and see whether this resolves your issue, and later also update to the official V16U4 when it comes out.

Run a backup first before you upgrade, just as a precaution.

 

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thanks a lot.

 

[AWS2P]

Are you located in Europe? as 112 is common emergency number .

 

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we are in Greece

 

[AWS2P]

so if 112 works for Greece emergencies too, then you should remove extension 112 on your PBX, otherwise if someone try to dial 112 for emergency services it will reach user of ext.112, perhaps if 112 user is a doctor or a fireman it can be an help but if not .....