[OpenSIPS-Users] codec manipulation feature

[andrei dragus]

Yes.

--- On Wed, 7/22/09, Ovidiu Sas <osas at voipembedded.com> wrote:

> From: Ovidiu Sas <osas at voipembedded.com>

> Hello Andrei,
> 
> Are you using the core sdp parser implementation?
> 
> Ovidiu
> 
> On Wed, Jul 22, 2009 at 8:59 AM, andrei dragus<andreidragus at yahoo.com>
> wrote:
> >
> >
> > Hi Jeff,
> >
> > This is Andrei. I am currently working on this right
> now. It should be finished in a couple of days if nothing
> comes up.
> >
> > Andrei.
> >
> > --- On Wed, 7/22/09, Jeff Pyle <jpyle at fidelityvoice.com>
> wrote:
> >
> >
> >> Just curious if you had a chance to see what the
> status is
> >> of this SDP
> >> manipulation code.
> >>
> >>
> >> Thanks,
> >> Jeff
> >>
> >>
> >>
> >> On 6/15/09 6:36 PM, "Bogdan-Andrei Iancu" <bogdan at voice-system.ro>
> >> wrote:
> >>
> >> > Hi Jeff,
> >> >
> >> > I have some code from last year - let me
> check it out
> >> and see what is
> >> > the status.
> >> >
> >> > Regards,
> >> > Bogdan
> >> >
> >> > Jeff Pyle wrote:
> >> >> Hi Bogdan,
> >> >>
> >> >> It¹s been a little while since we talked
> about
> >> this. I was wondering
> >> >> if there was anything in the works to
> detect
> >> and/or manipulate the
> >> >> codecs present in an SDP.
> >> >>
> >> >>
> >> >>
> >> >> - Jeff
> >> >>
> >> >>
> >> >>
> >> >> On 2/1/09 4:08 AM, "Steve Kurzeja" <steve.kurzeja at gmail.com>
> >> wrote:
> >> >>
> >> >>     This idea is quite
> >> standard in SBCs, typically called codec
> >> >>     profiles, where you permit
> >> only certain codecs to be passed
> >> >>     through the SBC in an
> >> INVITE and all the rest are stripped out.
> >> >>
> >> >>     We use it to get around
> >> interop issues with certain codecs. E.g.
> >> >>     we have some end
> >> devices/customers that have issues using g729a so
> >> >>     we choose to remove this
> >> codec for these specific endpoints.
> >> >>
> >> >>     The poor man's method to
> >> implementing this is just doing header
> >> >>     manipulations in the SDP
> >> but it would be nice to be standardized.
> >> >>
> >> >>     Regards,
> >> >>     Steve
> >> >>
> >> >>
> >> >>     On Fri, Jan 30, 2009 at
> >> 2:20 AM, Jeff Pyle
> >> >>     <jpyle at fidelityvoice.com>
> >> wrote:
> >> >>
> >> >>         Hi Bogdan,
> >> >>
> >> >>         I'm looking
> >> for the ability to selectively remove codec
> >> >>
> >>    advertisements from
> >> >>         the SDP. For
> >> example, if my customer sends a call to me for
> PSTN
> >> >>         termination
> >> he may advertise G711 and G729, with G711
> >> >>         preferred.
> >> By looking
> >> >>         at the
> >> number of existing dialogs I may know that he's
> running
> >> >>         low on
> >> >>         bandwidth,
> >> so I would like to suppress the G711
> advertisement
> >> >>         ultimately
> >> >>         causing a
> >> 200 OK from the carrier with G729.
> >> >>
> >> >>         Generically,
> >> in this application we're looking only to
> >> >>         suppress
> >> G711 at
> >> >>         certain
> >> times.
> >> >>
> >> >>         I understand
> >> normally codec selection is done completely by
> >> >>         the gateway
> >> >>         device.
> >> However, my gateway devices aren't smart enough
> to
> >> >>         take
> >> bandwidth
> >> >>         utilization
> >> into consideration when choosing which codecs to
> >> >>         advertise.
> >> I'm
> >> >>         hoping my
> >> proxy might be. :)
> >> >>
> >> >>         Does that
> >> make sense?
> >> >>
> >> >>
> >> >>
> >> >>         - Jeff
> >> >>
> >> >>
> >> >>
> >> >>         On 1/29/09
> >> 5:04 AM, "Bogdan-Andrei Iancu"
> >> >>         <bogdan at voice-system.ro>
> >> wrote:
> >> >>
> >> >>> Hi Jeff,
> >> >>>
> >> >>> right now there is only available
> some
> >> functionality to check
> >> >>         the codecs
> >> >>> (to see what codecs are advertised in
> the
> >> SDP)... What
> >> >>         exactly are
> >> you
> >> >>> looking for (like codec ops) ?
> >> >>>
> >> >>> Regards,
> >> >>> Bogdan
> >> >>>
> >> >>> Jeff Pyle wrote:
> >> >>>> Bogdan,
> >> >>>>
> >> >>>> Some months back you mentioned an
> upcoming
> >> feature that
> >> >>         would allow
> >> >>>> Opensips to manipulate the codecs
> present
> >> in the SDP. Just
> >> >>         wondering
> >> >>>> if there is anything available to
> test
> >> yet. This feature, in
> >> >>>> combination with dialog contexts,
> will be
> >> of great use to us
> >> >>         to allow
> >> >>>> us to take a guess at the
> bandwidth
> >> consumption for a particular
> >> >>>> customer and force the use of a
> compressed
> >> codec if necessary.
> >> >>>>
> >> >>>>
> >> >>>> Thanks,
> >> >>>> Jeff
> >> >>>
> >>
> >>
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> >>
> >
> >
> >
> >
> >
> >
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