[Freeswitch-users] "Shadow calls" - duplicate calls executing in parallel

David P davidswalkabout at gmail.com
Sat Feb 27 02:34:33 UTC 2021

I think the last time we experienced that was with 10.4 (we're on 10.5 now).

It happened infrequently as you note. I assumed it was an error in the way
our WebRTC app invoked verto. (I didn't have any browser console log to
confirm that, though.)

On Sat, 27 Feb 2021, 9:07 am , <
freeswitch-users-request at lists.freeswitch.org> wrote:

> ---------- Forwarded message ----------
> From: Sam van Herwaarden <svanherwaarden at precisionag.org>
> Hi all,
> I was just wondering if others have experienced this: on a few of the
> FreeSWITCH systems I've interacted with, I've observed situations where
> incoming phone calls seem to be duplicated. So there seem to be two call
> processes for the same phone number, also both receiving things like DTMF
> events. The timestamps of events tend to be very close (sub-second) but not
> necessarily identical.
> It's not very common, less than 1 per 1000 calls has this happening. It
> does tend to throw off some of our tooling (both in call handling and
> analysis). Curious to know if there could be an obvious cause/easy fix.
> Kind regards,
> Sam
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