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, > > It’s 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" <[email protected]> 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 > <[email protected]> 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" > <[email protected]> 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 > > > > > _______________________________________________ > Users mailing list > [email protected] > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > > > _______________________________________________ Users mailing list [email protected] http://lists.opensips.org/cgi-bin/mailman/listinfo/users
