On Fri, Oct 4, 2019, at 1:45 AM, Andreas Wehrmann wrote: > > On 03/10/2019 16:24, Joshua C. Colp wrote: > > In PJSIP there is the PJSIP_MEDIA_OFFER dialplan function[1] but ultimately > > codec negotiation is not written or implemented in the way you need. There > > are some hints provided internally for outgoing legs but the result is > > still ultimately independent. That is: Each leg is negotiated from Asterisk > > to the endpoint, not endpoint to endpoint via Asterisk. This works for the > > vast majority of users as they have media flowing through Asterisk (by > > choice or via use of features) and are fine with transcoding (generally > > using codecs which aren't that costly or low channel count). > > > > Asterisk 16 has some of the foundational work to improve this through the > > implementation of streams but noone has worked on extending the codec > > negotiation support. > > > > [1] > > https://wiki.asterisk.org/wiki/display/AST/Asterisk+17+Function_PJSIP_MEDIA_OFFER > > > > Hey Joshua, > > do you think it might be possible to achieve this by writing a > supplement for the PJ part?
PJSIP is only part of the equation, the information still has to transition across the core. > > What happens when the other side answers, but before the incoming call > is answered. > Is there a place in the code where, at that point, I have information > about both channels > and could theoretically influence the answer for the incoming call? Nope. That information is not currently exchanged or available, which is part of the problem. -- Joshua C. Colp Digium - A Sangoma Company | Senior Software Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - US Check us out at: www.digium.com & www.asterisk.org -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- Check out the new Asterisk community forum at: https://community.asterisk.org/ New to Asterisk? Start here: https://wiki.asterisk.org/wiki/display/AST/Getting+Started asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
