[Freeswitch-users] Strange noise when using conference_set_auto_outcall

Oleg Stolyar olegstolyar at gmail.com
Sun Jan 11 20:00:00 MSK 2015

Hi guys,

When I use conference_set_auto_outcall to dial a PSTN number via a SIP
trunk (Level3 is the provider), the existing conference participants start
hearing noise after a couple of seconds.  It happens whether at that time
the line is still ringing or the PSTN party picked up..  The noise persists
through the session when the PSTN party is silent.

The noise does not happen when I use the simple bridge to dial the PSTN
number instead of a conference, so I don't think it's the PSTN provider's

On the other hand, when I use the same settings to outcall another FS
server, the noise is not there.

Is there some conference setting I am missing?

Has anyone been able to successfully use set_auto_outcall to call PSTN

I am on
FreeSWITCH Version 1.5.14b+git~20140730T171747Z~5075d4af0d~64bit (git
5075d4a 2014-07-30 17:17:47Z 64bit)

I am trying to reproduce this on the latest master but  having trouble
building on my old CentOS 5.9.  I'll keep trying.
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