asterisk users - Jun 2020 - Voice broken during calls (again...)

Am 23.06.2020 15:43, schrieb Marek Greško:

Hi
>> Do you mean "my Linux-Box ignores ICMP packet unreachable" or
>> "Deutsche
>> Telekom ignores them"?
> 
> I meant DT, but this was a speculation. I did not say they do. I
> consider it highly improbable. Then I was asking whether you do. As
> per configuration you sent you are not blocking icmp type 3 so this
> should not be an issue.
OK, so this should not be the problem...
What can we check now?
If you want, I can send my iptables-script. It is possible, that I have 
there an error causing this behaviour...

Maybe someone in the list is an expert with iptables and can check it?
I know this program, but I'm not really an expert...

Thanks
Luca Bertoncello
(lucabert at lucabert.de)

It seems your problems lie in something other. Most probably it is not
mtu problem. All my suspections are contradicted. If it is true you
have inter vlan voice quality problems, it is definitely something
different. Formerly I assumed you were trying only LTE vs LAN using
internet.

Marek


2020-06-23 15:50 GMT+02:00, Luca Bertoncello <lucabert at
lucabert.de>:
> Am 23.06.2020 15:43, schrieb Marek Greško:
>
> Hi
>
>>> Do you mean "my Linux-Box ignores ICMP packet
unreachable" or
>>> "Deutsche
>>> Telekom ignores them"?
>>
>> I meant DT, but this was a speculation. I did not say they do. I
>> consider it highly improbable. Then I was asking whether you do. As
>> per configuration you sent you are not blocking icmp type 3 so this
>> should not be an issue.
>
> OK, so this should not be the problem...
> What can we check now?
> If you want, I can send my iptables-script. It is possible, that I have
> there an error causing this behaviour...
>
> Maybe someone in the list is an expert with iptables and can check it?
> I know this program, but I'm not really an expert...
>
> Thanks
> Luca Bertoncello
> (lucabert at lucabert.de)
>
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Am 23.06.2020 16:22, schrieb Marek Greško:
> It seems your problems lie in something other. Most probably it is not
> mtu problem. All my suspections are contradicted. If it is true you
> have inter vlan voice quality problems, it is definitely something
> different. Formerly I assumed you were trying only LTE vs LAN using
> internet.
I'm not sure what you mean with the last sentence...
I tried to connect to my Asterisk via LAN or via DSL (either via LTE or 
other DSL).
Then I noticed that if I call another peer in same network (= both peers 
via DSL or both peers in the same VLAN), the quality is very good, 
otherwise is very poor.

But why should Asterisk have problem if the peers are in different 
networks it's for me a really big mistery...

This evening I'll try to capture the pakets in a call between two peers 
connected to Asterisk via LTE, two peers connected in the same LAN and a 
peer connected via LTE and the other in LAN, then maybe it's possible to 
find the problem...

But if you have any other idea, I'm very happy to hear it! ;)

Thanks
Luca Bertoncello
(lucabert at lucabert.de)