[Freeswitch-users] conferencing

Sam u2nsam at gmail.com
Tue Jan 4 13:45:33 MSK 2011


calls would not be TDM it would be ip-ip calls.
Ok G711 uses less CPU than other codecs,how can i utilized multiple
threading/profiles or any other options to scale ? as it would be an
incoming call always on FS.

Regds
Sam

On Tue, Jan 4, 2011 at 3:53 PM, Steven Ayre <steveayre at gmail.com> wrote:

> That will still involve transcoding. FS must combine all speaking
> channels into a single stream that can be sent to the conference
> members. That can't be done in a compressed audio format, so it must
> convert G711 to L16 for each speaking member, combine those pieces of
> audio, then convert L16 back to G711 to send to the conference
> members. Additionally, since the conference members are not
> necessarily all using the same codec that last transcoding step will
> occur once for each member, not just once for the conference. Your
> best bet is to use a codec that uses as little CPU for transcoding as
> possible - in software I'm not sure which is best there (G711 is
> simple so possibly a good choice), in hardware Sangoma D100/D500 would
> almost all the processing off the CPU.
>
> -Steve
>
>
> On 4 January 2011 10:15, Sam <u2nsam at gmail.com> wrote:
> > Ok if i remove transcoding out of the picture and all conf are running on
> > g711, what rest would matters ?
> >
> >
> > Regds
> > Sam
> >
> >
> > On Tue, Jan 4, 2011 at 2:56 PM, Avi Marcus <Avi at amarcus.com> wrote:
> >>
> >> It's the transcoding that will kill you. If that's truly needed, you may
> >> want to look into multiple machines handling transcoding and then
> bridging
> >> into the conference, or the new transcoding hardware from sangoma.
> >> -Avi
> >> On Tue, Jan 4, 2011 at 9:55 AM, Sam <u2nsam at gmail.com> wrote:
> >>>
> >>> hello,
> >>>
> >>> how to increase the scalability / performance of the conference .
> >>>
> >>> Are there any parameters to be observed that could do a trick ?
> >>>
> >>> The scenario would be multiple conferencing bridges and multiple codecs
> >>> involved.
> >>>
> >>> Is is possible to multiple threading of profiles for conferences so
> that
> >>> it gets the scalability ?
> >>>
> >>> Regards
> >>> Sam
> >>>
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