[Freeswitch-users] Voice lag in conference

[Anthony Minessale]

don't forget to read my suggestion too from earlier today =D


On Tue, Jun 16, 2009 at 4:30 PM, Josh Moon <joshm at wabashcenter.com> wrote:

>  I was able to reduce it considerably.  I can’t say it is completely gone
> but I am very confident the ~.5 second delay I hear is because of the time
> it takes my voice to go through the leaps and bounds of the phone company to
> our server.  I had at least a 3-5 second delay before I experimented with
> the conference settings.
>
>
>
> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Bradley
> Brashier
> *Sent:* Tuesday, June 16, 2009 5:02 PM
> *To:* freeswitch-users at lists.freeswitch.org
> *Subject:* Re: [Freeswitch-users] Voice lag in conference
>
>
>
> I'm not sure I've got the opportunity to do that at the moment, but I do
> appreciate the point of view of a fellow product user. Were you able to
> eliminate noticeable lag, or just reduce it to reasonable levels?
>
>
>
> I'll try to do something similar when I update to the newest trunk as
> Anthony suggested. My copy is only a week old, but I'll try whatever has a
> chance of working, and I know you guys have been working on conferencing
> (the Moderator function couldn't have been timed better for me!).
>
> On Tue, Jun 16, 2009 at 12:01 PM, Josh Moon <joshm at wabashcenter.com>
> wrote:
>
> I am not as knowledgeable as the developers that will respond to your
> question but I had the same problem as you.  Here is what I did to combat
> the delay:
>
>
>
> First off I started everything from scratch.  I reinstalled Linux and then
> I reinstalled FreeSWITCH by creating .deb packages.
>
> I then created my own conference profile and set the sample rate to 4000
> and changed the energy level to 20.
>
> I also made sure to test the conference room from phones that were in
> completely different areas so there wasn’t a chance for feedback or really
> bad echoing problems.
>
>
>
> Once I knew the delay was solved I raised the sample rate to 8000.  I
> tested it to make sure it would work properly.
>
>
>
> As Michael stated, this could be your network infrastructure but I just
> wanted to let another FreeSWITCH user know what I did to try and stop the
> voice delay.
>
>
>
> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Bradley
> Brashier
> *Sent:* Tuesday, June 16, 2009 1:52 PM
> *To:* freeswitch-users at lists.freeswitch.org
> *Subject:* [Freeswitch-users] Voice lag in conference
>
>
>
> I'm creating a conferencing product for use in a system with theoretically
> several hundred concurrent calls. I'm using FreeSwitch to create this
> product, but am not only new to FreeSwitch, but also the entire telecom
> industry as well as Open Source projects in general (I'm a recovering BIOS
> guy).
>
> I've got a bare-bones conference up and running on the server, including a
> handshake and a couple of features, and am using the default packages from
> the current trunk, but I've noticed that voice lag is a pretty big issue.
> Common lag times are several hundred milliseconds, and I've heard as long as
> a second. It seems to be at least marginally specific to individual phones
> -- certain phones have longer lag than others even on the same call.
>
> My question is really about what my options are. Is this just a part of
> SIP? Of conferencing? Of FreeSwitch? Are there things I can prune or slim
> down that will help? Is this a common issue? If it's common, is it expected
> by the marketplace?
>
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-- 
Anthony Minessale II

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