[Freeswitch-users] FreeSWITCH Voicemail - silence detection

Michael Collins msc at freeswitch.org
Mon Oct 3 23:26:33 MSD 2011

Yes, you can control this. The threshold value is described here:

The silence hits is described here:

Both of those link to the docs for the wait_for_silence dialplan tool, which
discusses these values in more detail:

In a nutshell, if you lower the threshold value then that means the silence
needs to be "quieter" to be considered "silence." So, for a soft-spoken
voice you would want to lower the threshold. I would experiment with that.
Note that if you set the threshold too low then no silence will ever be
detected. As for the "hits" value, that just tweaks how much silence FS
needs to detect before it assumes there is silence on the line. The higher
the number of hits, the longer the silent period needs to be for FS to
assume it is "silence."


On Sun, Oct 2, 2011 at 6:01 PM, Lloyd Aloysius <lloyd.aloysius at gmail.com>wrote:

> Hello,
> I have the voicemail issue. When someone  soft spoken leaves a message they
> get interrupted by the silence detection.
> “to play this message press 1, to send this message press 2, to delete this
> message and try again …”
> I found two options in voicemail.conf. None of them make any difference.
> <param name="record-silence-threshold" value="200"/>
> <param name="record-silence-hits" value="2"/>
> Is there anyway to increase the threshold or time out.
> FreeSWITCH Version 1.0.head (git-0675b59 2011-06-06 21-28-14 -0500)
> Thanks in advance.
> Lloyd
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
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