[Spce-user] rtpengine & sdpops

[Andreas Granig]

Hi,

I don't believe that's possible. What you could also do though in case
you must for some reason use kamailio for this task is filtering the
codecs on the kamailio-lb instance, which would work out of the box
without this trick. That would only filter end-to-end calls, not calls
going to some internal service (voicemail for instance).

The most generic approach is to configure sems.sbc.sdp_filter in
/etc/ngcp-config/config.yml, which would utilize the sems b2bua to
perform the codec filtering.

Andreas

On 04/11/2016 11:10 PM, Sergey Zyrianov wrote:
> Hi,
> 
> Thanks for the reply!
> 
> Is there any option to apply changes to SDP only?
> msg_apply_changes() seems to be too invasive atm.
> 
> Thanks,
> Sergey.
> 
> On Mon, Apr 11, 2016 at 9:39 PM, Andreas Granig <agranig at sipwise.com
> <mailto:agranig at sipwise.com>> wrote:
> 
>     Hi Sergey,
> 
>     Since rtpengine is replacing the full sdp body, you need to do a
>     msg_apply_changes() after rtpproxy_offer() and before
>     sdp_remove_codecs_by_name().
> 
>     Andreas
> 
>     On 04/11/2016 09:31 PM, Sergey Zyrianov wrote:
>     > Hi,
>     >
>     > In kamailio script I tried to remove some codecs before/after
>     rewriting
>     > the SDP with rtpeninge_offer().
>     > My codecs list stay the same:
>     >
>     > ....
>     >                 if (rtpproxy_offer("ie-spc"))
>     >                    t_on_reply("1");
>     >                 sdp_remove_codecs_by_name("G729,G723");
>     >
>     > G729 and G723 codecs are still mentioned by SDP regardless if i move
>     > sdp_remove_conecs_by_name before/after the rtpproxy_offer.
>     > It seems like I can not have both modules working on the same SDP?
>     >
>     > Thanks,
>     > Sergey.
>     >
>     >
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