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

Marek Greško mgresko8 at gmail.com
Tue Jun 23 10:04:22 CDT 2020

I interchanged LAN and LTE in the sentence.

Do you have some kind of NAT in fron of asterisk? Or is your asterisk
having public IP? Could you share sip.conf (without passwords)? One
LAN client, one LTE and general section.


2020-06-23 16:29 GMT+02:00, Luca Bertoncello <lucabert at lucabert.de>:
> 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)
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