On 24.01.19 at 12:08 Joshua C. Colp wrote: > On Thu, Jan 24, 2019, at 7:00 AM, Michael Maier wrote: >> Hello! >> >> Given is an outbound call to a callee via asterisk to the ISP. After >> INVITE, the ISP sends 100 Trying and some time later 180 Ringing *w/* >> SDP and the header >> "P-Early-Media: sendonly" (no 183 or any other thing until callee >> responds). SDP in 180 contains media attribute *sendrecv* >> (contradicting to the P-Early-Media header). >> >> Asterisk 13.24.1 sends PRACK to the ISP (w/o SDP) and the 180 to the >> caller - but SDP is dropped and therefor no early media is possible! >> >> Is this behavior a bug or a feature? > > It would be a bug. That's not a scenario that I think anyone has really > tested or fully scoped out. Is media actually received while in the 180 with > Ringing stage? >
Just a quick thought: Would it be a valid workaround to enable inband_progress for the calling extension? This ensures, that a media session is always generated - especially for an incoming 180. The question now is: if the ISP sends media and asterisk creates media itself (as it told) - which media is preferred? Will asterisk drop ISP's media in favor of its own media? Or will it pass the ISP's media and drop own media? Thanks, Michael -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
