[Freeswitch-users] Use of loopback channels and bridge() in scripts...

Anthony Minessale anthony.minessale at gmail.com
Mon Apr 13 08:54:56 PDT 2009

1) When you say latest, which rev does that mean? we change revs pretty
2) Do you have a minimal script that reproduces your issue.
3) is there a reason you cannot just session.execute("bridge", dest);
    instead of doing it manually (which is a process not for the faint at

On Mon, Apr 13, 2009 at 10:29 AM, Peter Olsson <
peter.olsson at visionutveckling.se> wrote:

> I have two problems that I haven't been able to solve. I've done the same
> tests in both javascript, and in .NET.
> The two scripts are pretty simple, they just answer an incomming call,
> creates a new session, wait for an answer on the second call leg, and then
> bridge the two channels together.
> In both cases everything works just fine, but the audio is distorted. The
> destination I'm calling is "loopback/5000" - the sample IVR application
> included in FreeSWITCH. I first thought it was a codec issue, but even after
> trying to switch to different codecs the problem was the same. It more
> sounds like it's a timestamping issue - the voice is not distorted enough to
> be a bad codec, but it reads way to fast (mayby twice the "normal" speed).
> When doing a direct transfer() to the other destination this works just
> fine, but I need to be able to have some extra logic to tell if the
> destination is available or not.
> The second problem occurs only in .NET. After doing this sample there is as
> loopback channel still hanging around. It seems like the call creates a
> loopback-a and loopback-b, the loopback-b dissapears as it should (when the
> call has been disconnected), but the other one stays there. When doing the
> same in javascript this doesn't seem to occur.
> I'm using the latest SVN trunk, and my OS is Windows XP.
> I found bug FSCORE-349 in Jira, which seems to point in to the direction
> that there might be a bug with the loopback channels in some cases, but I
> could not find anything about the audio which plays too fast.
> Has anyone else experienced this?
> Regards,
> Peter Olsson
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Anthony Minessale II

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