[OpenSIPS-Users] codec manipulation feature

[Ovidiu Sas]

Perfect.  Let me know if you need more features from the sdp parser.

Thanks,
Ovidiu

On Wed, Jul 22, 2009 at 11:32 AM, andrei dragus<andreidragus at yahoo.com> wrote:
>
> 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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>> >> Users at lists.opensips.org
>> >> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>> >>
>> >
>> >
>> >
>> >
>> >
>> >
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>> >
>>
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