[asterisk-users] Voice broken during calls (again...)

Marek Greško mgresko8 at gmail.com
Tue Jun 23 09:22:42 CDT 2020

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


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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