[Freeswitch-users] Strange media behavior on WebRTC

[Oleg Stolyar]

In case it was not clear from the previous email - this only happens with
conferences.  If after the beep, instead of placing the call into a
conference, I just play some music, there are no problems.


On Sat, May 31, 2014 at 5:46 PM, Oleg Stolyar <olegstolyar at gmail.com> wrote:

> Hi guys,
>
> I am connecting to FreeSWITCH using WebRTC and after a user calls in, I
> play a beep and put them into a conference.  Two strange things happen
> after that:
>
> 1. There is a noise in the user's leg that someone described like a wind
> in the tunnel.  The noise lasts for several seconds, then the user can hear
> the hold music.  The noise does not seem to happen if I don't play the beep
> before the conference.
>
> 2. About 3 seconds into the call, there is another very short beep - like
> a small portion of the original beep that the user hears.
>
> This absolutely does not happen with softphones - only with WebRTC.  I
> tried it with Chrome and Opera - same thing is happening on both.
>
> I tried increasing the answer delay from 2 seconds to 3 and the noise now
> happens more rarely but the extra beep is still there almost every time.  I
> am using JsSIP 3.0 but since it only handles signalling I don't think the
> problem is with the JS library.
>
> Has anyone run into this?  Any advice?
>
> Here is the relevant excerpt from my dialplan.
>
> <condition field="destination_number" expression="^conf-(\S+)$">
>         <action application="set" data="answer_delay=3000"/>
>       <action application="answer"/>
>         <action application="playback" data="tone_stream://%(1000,0,600)"
> />
>         <action application="conference" data="$1 at default"/>
> </condition>
>
>
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