[OpenSIPS-Users] No audio on TLS connection - Opensips 3.1

[HS]

Hi again.

I discovered something interesting with regards to the TLS connection with
a specific UA when it connects via TLS. In our scenario we forward a call
via Freeswitch (on another server) to another call centre provider. The UA
works fine on UDP + TCP mode. However, on TLS we do not get to hear audio
from the other end. (It seems that Opensips sends out a local address).

Interestingly, when I restart Opensips (3.1) and connect within a minute or
so, I DO get to hear audio. But subsequent calls do NOT have any audio.
This is really beyond my understanding. Is this an Opensips issue or user
agent? Following is a link to level 7 log - appreciate if someone can help.
There are two calls - the first one has audio, the second one doesn't.

https://pastebin.pl/view/abc908c1

Much appreciate the help.


On Thu, May 26, 2022 at 1:04 PM HS <bullehs at gmail.com> wrote:

> Hi all.
>
> Just testing out Opensips 3.1 and run into a confusing issue. Users can
> connect and make calls successfully on UDP and TCP. However, some users are
> facing a problem with TLS - they connect fine, but don't hear any audio.
>
> Looking at the logs it seems that a private IP is registered. We have
> tried nat_uac_test 23 and 119 (REGISTER) and 1 and 2 (ONReply). We are
> using the standard residential script. Any thoughts on what else to test?
>
> Thanks for the help.
>
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