[Freeswitch-users] Audio stops reaching verto user during call

[David P]

In verto calls since yesterday, I've been able to hear only the first
automated prompt played in a conference, even though the mp4 recording
reveals later prompts were played.  The first prompt I don't hear is at
18:38:58 (based on the clock of another machine in the same AWS cluster),
that occurs between these lines from the FS log:

237113d5-a985-4527-9d2c-67a3681b5202 2019-11-12 18:37:27.385974 [DEBUG]
switch_rtp.c:8187 Correct audio ip/port confirmed.

2019-11-12 18:40:00.685949 [ALERT] mod_verto.c:1411 READ ((public IP of
FS)):60168 [{
        "jsonrpc":      "2.0",
        "method":       "verto.bye",

Our server has been handling calls well for months. It's FreeSWITCH Version
20.19.4-release-12-fc9d51c~64bit (-release-12-fc9d51c 64bit) on debian9.

The call used a relay candidate from our coturn server, and its log shows
nothing obviously wrong during this approximate period, but due to its lack
of timestamps, it seems practically impossible to align its session info
with FS's. I haven't found a way to relate ice IP numbers in the FS log
with IP numbers in coturn's.

Before I turn to the coturn mailing list for help, is there anything on the
FS side you can suggest?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20191112/f5687cf1/attachment.html>