Hi Bogdan, 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" <[email protected]> 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" <[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
